Showing posts with label Becky Ferreira for Motherboard. Show all posts
Showing posts with label Becky Ferreira for Motherboard. Show all posts

Monday, 30 January 2017

Earth Has Been Sneezing Biogenic Oxygen on the Moon for Billions of Years

Concept art of Earth from the Moon. Image: DonkeyHotey/Flickr

The Moon may be liberally sprinkled with oxygen created by life on Earth, according to new research published Monday in Nature Astronomy. This opens up the possibility that “the Earth’s atmosphere of billions of years ago may be preserved on the present-day lunar surface,” in the words of the paper’s authors, led by Osaka University planetary scientist Kentaro Terada.

The notion that Earth has been periodically sneezing its sky stuff on the Moon, spraying it with the exhalations of now-extinct lifeforms, is not entirely new. Previous teams have suggested that nitrogen and noble gases embedded in the Moon’s soil originated on Earth.

But Terada and his co-authors are the first to present evidence that oxygen, an essential ingredient and byproduct of terrestrial life, is regularly peppered all over the Moon’s surface.

The team used data collected by the Japanese Kaguya spacecraft in 2008 to show that Earth-brand oxygen ions can make this giant leap during a special five day period in the satellite’s orbit, when Earth is located between the Sun and the Moon.

Concept art showing Earth’s plasma shield and oxygen flow. Image: Kentaro Terada/Osaka Univ./NASA

During this time, Earth’s magnetic plasma sheet protects the Moon from the bombardment of the solar wind, which is a powerful stream of charged particles emitted by the Sun. But our planet’s magnetosphere is filled with its own homegrown energetic particles, and the Kaguya orbiter’s Ion Energy Analyzer (IEA) and the Ion Mass Analyzer (IMA) detected them during those five-day breaks from the onslaught of the solar wind.

“Even when the geomagnetic field was less developed or absent in ancient times, the Earth’s plasma sheets could have existed and led to effective transportation from the Earth’s atmosphere to the lunar surface,” Terada’s team reported. “This mechanism would be enhanced if the distance between the Earth and the Moon was much smaller than today, as it seems it was. A consequence of this finding is that the entire lunar surface can be contaminated with biogenic terrestrial oxygen, which has been produced by photosynthesis over a few billion years.”

If that makes you want to hop on over Moonside in order to excavate the untapped respiratory history of life on Earth, you are not alone (and fortunately, the Moon is becoming a popular destination for landers again).

READ MORE: The Other First Moon Landing

But the paper’s authors warn that it will be extremely challenging to differentiate between the ions embedded into the lunar soil by the solar wind, and those that came from Earth.

“It is the accumulated oxygen over billions years of both the solar wind and the Earth wind that the lunar soil preserves,” Terada told me over email. “To decipher the accumulated oxygen, we need to distinguish which one is recent, and which one is ancient, even in the single grains.”

In other words, it’s not as if the lunar soil’s oxygen ions come with a clear timestamp, or a paper trail about their origins. But Terada said that drilling into the Moon for a deeper core sample, representing older layers of regolith beneath the surface, might help solve the mystery.

In the meantime, however, Terada’s strategy is to look to other worlds for analogous processes. “Very recently, NASA’s MAVEN mission reported that even non-magnetic Mars also has plasma sheets,” he told me. “So, we predict that ancient Mars’ atmosphere is preserved in [the Martian moon] Phobos’ soil."

“I believe that the JAXA Phobos mission in the near future will prove this hypothesis,” he said. This mission is called Martian Moons eXploration (MMX), and is scheduled to launch to Phobos in 2022, where it will collect samples of the moon to be returned to Earth.

So, there you have it: Earth and Mars may have stashed valuable deposits of information about their atmospheric pasts into the soil of their natural satellites. That’s should give you a premium bump of Sagan-level scientific wonder to start off your week.

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from Earth Has Been Sneezing Biogenic Oxygen on the Moon for Billions of Years

African Villagers Use Satellite Data to Help Save Wild Chimpanzees

A century ago, an estimated two million wild chimpanzees thrived in the dense forests of central Africa. But steady human encroachment into chimp territory, along with poaching, has caused the population to dwindle to a quarter of its historic size, with under 345,000 projected to be left in their native habitats today.

Given that chimpanzees are a keystone species and the closest extant relative to humans, their rapid decline in the wild has sparked widespread concern. In response, NASA and the Jane Goodall Institute partnered on a project that aims to use space-down views of chimpanzee habitats to guide local activists involved in conservation. The early results of this ongoing collaboration were recently in this short documentary.

Satellite imagery from NASA’s veteran Landsat constellation, which is the longest continuous Earth observation project in history, bears witness the severe deforestation and habitat destruction that has occurred in chimp territories between 1972 and 1999. Lilian Pintea, the vice president of conservation science for the Jane Goodall Institute, cites one particularly sobering example: Tanzania’s Gombe National Park, shown in an animation here based on Landsat data.

Image: NASA/Goddard Scientific Visualization Studio/Cindy Starr

“Chimpanzees are in crisis,” Pintea said in a statement. "NASA satellite data helps us understand what it means to be a chimp by overlaying distribution of the habitat with the chimpanzee behavior and ranging data."

Another satellite view of Gombe National Park. Image: NASA/Goddard Scientific Visualization Studio/Cindy Starr

With that information, conservationists can optimize the best strategies for protecting vulnerable ranges from further fragmentation or destruction by the human population boom that surrounds them. Some examples include avoiding development of new communities near important chimp feeding and nesting grounds, and allowing for forest corridor regrowth so that disparate patches of habitat can be connected.

READ MORE: This Is How Satellites Will Pinpoint Earth’s Most Vulnerable Ecosystems

According to Goodall, the use of Landsat data and GPS-enabled devices for chimpanzee protection has been embraced by African villagers interested in restoring those lost habitats—for themselves, as well as for chimpanzees.

"It was really exciting to see the impact of these images on the villagers," she said in the NASA short. “To see them identifying their sacred places, and how it enabled them to do their land use management plans. "It was like a piece of reality dropped magically from the sky."

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from African Villagers Use Satellite Data to Help Save Wild Chimpanzees

Wednesday, 25 January 2017

Private Lunar Landers Are Coming, and They’re Like Nothing You’ve Seen Before

The race to become the first private entity to land a robot on the Moon is heating up, as five teams close in on the Google Lunar XPrize. The final heat of candidates were winnowed down from dozens of contenders that couldn’t clear hurdles or meet deadlines for the prize, which included designing and building original spacecraft, meeting flight regulations, and securing a launch contract scheduled to blast off by the end of 2017.

The last groups standing were announced on Tuesday: They are (drum roll) Moon Express, SpaceIL, Team Indus, Hakuto, and Synergy Moon. All five teams are tentatively on track for launches this year.

Established in 2007 by the nonprofit XPrize organization, the Google-sponsored Lunar XPrize is an open challenge to create a robot that can voyage to the Moon, travel at least 500 meters on its surface, and send high-resolution visuals back to Earth. A total of $30 million in prize money is at stake, two thirds of which will be awarded to the first team to successfully meet the contest’s requirements.

The impetus for the Lunar XPrize was to stimulate innovation in the global space community, and by that standard, the contest is already successful. The hopeful companies advancing into the 2017 home stretch have wildly different lunar exploration strategies and goals, plus they hail from all around the world. Here’s a quick rundown of the five penultimate lander concepts.

Animation of MX-1E landing on the Moon. Image: Moon Express

Moon Express: MX-1E Lander

Moon Express, a Florida-based company founded in 2010, is the first private entity to be granted clearance to land on the Moon, an achievement it hopes to build on by putting its MX-1E Lander on the lunar surface as soon as possible. The company has a launch contract with Rocket Lab, a US aerospace venture with launch facilities in New Zealand. Their lander is expected to hitch a ride on that company’s lightweight Electron rocket at some point this year, after the Electron has been adequately flight-tested.

READ MORE: How the First Private Moon Landing Will Spur the Future of Space Mining

The MX-1E represents a significant departure from the traditional “lab-on-wheels” lunar rovers deployed by the American, Russian, and most recently, Chinese space programs. Instead of driving around, the robot will leverage the Moon’s weaker gravity well by executing controlled hops to various locations on the surface.

"Why crawl when you can fly?"

“Why crawl when you can fly?” a Moon Express spokesperson told me over email. “Although rovers have an important place in planetary surface exploration, our business model is to provide lunar access to a wide variety of locations on the Moon.”

Indeed, Moon Express has long-term aspirations to establish mining operations on the Moon and other celestial bodies, so it makes sense for them to focus on vehicles that can examine and prospect several sites over vast areas.

Sparrow model on display in 2015. Image: אמא של גולן/SpaceIL

SpaceIL: Sparrow

The Sparrow lander, developed by the Israeli nonprofit SpaceIL, takes the cake for the most futuristic design concept in play for the XPrize. With its spindly legs and funnel-shaped bus, the spacecraft looks completely different from past lunar rovers. Like the MX-1E, it is designed to hop from place to place, which team leads say will conserve mass and gas relative to its rival rover concepts.

SpaceIL has brokered a contract with SpaceX, and is on track to be bundled into a Falcon 9 rocket launch at some point in 2017. The project was largely developed and executed by volunteers, and the team leads have pledged to invest most of the XPrize to educational programs should they win it.

Concept art of Tesla rover. Image: Synergy Moon

Synergy Moon: Tesla Rover

Synergy Moon is a diverse collective of specialists spanning 15 nations, and is working on developing “at least one rover” in its Tesla series, illustrated above, according to its XPrize page. The rovers are equipped with two identical cameras that provide stereoscopic vision. Synergy Moon aims to make its high-definition view of the Moon to be accessible to anyone online. The group has arranged its launch through Interorbital Systems’ Neptune rocket.

ECA Rover mockup. Image: TeamIndus

TeamIndus: ECA Rover

TeamIndus, a for-profit spaceflight company based in New Delhi, is shooting to land its adorably anthropomorphic 11-pound rover, currently codenamed ECA, in the Moon’s Mare Imbrium region. The team has already won a $1 million Milestone award for its landing technology.

For launch arrangements, the company is joining forces with one of its XPrize rivals, the Japanese group Hakuto. The two teams have arranged to bundle both their landers into the same PSLV rocket, a model developed by the Indian Space Research Organization. The launch is currently scheduled for late December 2017.

Prototypes of Hakuto rovers. Image: Hakuto/XPrize Foundation

Hakuto: Moonraker and Tetris Rovers

Last but certainly not least, meet the Moonraker and Tetris dual rovers developed by the Sendai-based Hakuto. The two-wheeled Tetris is designed to be tethered to the four-wheeled Moonraker like a trailer, which will enable it to be lowered into so-called “skylights” on the Moon. The lunar surface is thought to be riddled with underground caves, tunnels, and basaltic lava tubes, some of which may be accessible through skylight channels. The Hakuto team aims to be the first to explore these tantalizing lunar realms with its unique roving tag-team.

These diverse and innovative concepts herald a crucial turning point in lunar surface operations, which have been on hold since the 1970s (with the notable exception of China’s Yutu rover, deployed in 2013). Previous mobile robots sent to the Moon by the Russia, China, and the US were primarily tasked with studying the alien environment, and to occasionally blast back samples of lunar rock. All of them bundled scientific instruments into a traditional rover design.

The XPrize finalists have broken out of that mould in a few significant ways. Moon Express and SpaceIL may demonstrate that hopping around on alien bodies is a promising alternative transportation method to driving over terrain. This could have big repercussions for future missions to the Moon, Mars, and beyond, especially if hoppers can reliably clear hurdles, like cliffs or extreme terrain, that rovers must avoid.

“Rovers are very slow and cannot travel significant distances,” the Moon Express team told me. “Our robotic spacecraft can re-launch and fly to distant locations for science and exploration diversity. We can deploy rovers in each location—consider the advantage of multiple landings for a single launch.”

"We can deploy rovers in each location—consider the advantage of multiple landings for a single launch."

More broadly, the smorgasbord of objectives and design concepts each team has put forth shows that private groups can greatly diversify avenues of space exploration over a relatively short timespan. Impressively, many of these companies are less than a decade old, and some are based in countries that have never ventured to the Moon before.

It’s difficult to predict which finalist will end up snagging the winning $20 million prize, and at this point, much of it is up to luck. If the novel Electron and Neptune rockets require further testing, or if SpaceX needs to alter its launch manifest for some reason, the teams relying on those vehicles will be held up through no fault of their own.

That said, the fact that these teams have gotten this far distinguishes them all as pioneers. While one of them will likely succeed in cinching the honor of being the first non-governmental group to land on the Moon, explore it, and send back pictures, the runners-up no doubt earn a shout-out in the history books as well.

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from Private Lunar Landers Are Coming, and They’re Like Nothing You’ve Seen Before

Monday, 23 January 2017

These Are The Best Satellite Images of Earth's Weather Taken So Far

Get ready to revel in some next-level planetary beauty, because on Monday, the National Oceanic and Atmospheric Administration (NOAA) released the first images taken by its GOES-16 weather satellite, launched in November 2016.

Perched 22,300 miles above Earth, the spacecraft has a spectacular view of our world’s complex atmospheric dynamics. Take this stunning shot of the Americas, snapped on January 15, which captures the fine details of meteorological phenomena like cloud cover, storm development, and the flow of global air currents.

North, Central, and South American from geostationary orbit. Image: NASA/NOAA

GOES-16’s pictures were taken by the Advanced Baseline Imager, the satellite’s high-definition camera, which was built by the Harris Corporation. The instrument can take pictures across 16 different wavelength channels—two visible, four near-infrared, and ten infrared. This versatility helps scientists identify traces of smoke, volcanic ash, water vapor, and other substances in Earth’s atmosphere.

ixteen wavelength channels on the Advanced Baseline Imager. Image: NASA/NOAA

GOES-16 has four times the image resolution of the existing Geostationary Operational Environmental Satellites (GOES) fleet, plus it can churn out five times as many new visuals of Earth over the same timeframe as the older GOES orbiters. The spacecraft is the first member of NOAA’s next-generation GOES-R fleet; three more sister ships are slated for launch over the coming years.

The Sahara Dust Layer off the coast of Africa. Image: NASA/NOAA

GOES-16 can image the entire planet once every 15 minutes, and render shots of the continental United States in only five. It is also decked out with five other sophisticated instruments, including a lightning tracker, a magnetometer, and solar sensors that will eventually be used to image the Sun in extreme ultraviolet and X-ray wavelengths.

Simulation of what GOES-16 ultraviolet Sun images will look like. Image: Steve Hill/NOAA

NOAA scientists are thrilled at the high level of precision in this initial photoset, which bodes well for GOES-16’s central objective of providing unprecedented forecasts and monitoring of severe weather situations.

Close-up on continental US. Image: NASA/NOAA

In the wake of this weekend’s deadly tornadoes in the American southeast, the mission seems more topical than ever. Constant surveillance of Earth’s weather patterns will be essential to protecting communities threatened by extreme storms, especially because climate change is expected to increasingly exacerbate these natural disasters.

The Caribbean islands and Central America. Image: NASA/NOAA

To that point, these impressive initial portraits from GOES-16 are more than cosmic eye candy—they also demonstrate the value of Earth science missions for understanding dangerous weather events and mitigating the damage caused by them.

The Northeast US, including Chesapeake Bay and Long Island. Image: NASA/NOAA

While the Obama administration increased investments in NASA/NOAA Earth-observation satellites, President Trump’s space advisors have stated that under the new administration, Earth science will be marginalized in favor of human interplanetary exploration. This shift in focus could put enterprising missions like GOES-16 at risk, at a time when many regions of the planet are teetering on the brink of environmental collapse.

READ MORE: Trump Team Thinks NASA Should Study Planets Just Not the One We Live On

Hopefully, NOAA’s newly released images will remind the public of the aesthetic, scientific, and public health gains that hinge on better views of the planet we all live on.

The Moon above Earth, captured January 15, 2017. Image: NASA/NOAA

What better way to drive that point home than with the satellite’s wonderful shot of the Yucatan Peninsula, where the dinosaur-killing asteroid struck 66 million years ago—a geological reminder of the cosmic fragility of Earth and its inhabitants.

Yucatan Peninsula in Mexico. Image: NASA/NOAA

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from These Are The Best Satellite Images of Earth's Weather Taken So Far

Sunday, 22 January 2017

Hack a Furby to Rickroll Your Friends Through Its Creepy Eyeball Menu

The first generation of Furby, the owlish electronic toy made by Hasbro, was met with enormous consumer demand when it hit shelves in November 1998. Thanks to their novel communication abilities and adorable appearance, millions of these OG Furbies were sold around the world, creating a new niche for household robots—along with a subculture devoted to hacking them.

Indeed, the history of reprogramming Furbies to execute all kinds of commands and functions is fascinating. And every time Hasbro reboots the toy with more sophisticated software, the options for DIY tinkerers proliferate into ever-weirder offshoots of non-native Furby behavior.

Take this recent video guide from the YouTube channel Jeija, which show how to hijack the new Furby Connect’s Bluetooth platform to make the toy blurt out custom sound files imported by the user. Let the Furbish rickrolls begin:

As outlined in the video, all past Furby models used communications to react to outside events, but Hasbro has made “a giant mistake” with Furby Connect by allowing it to receive updates through the company’s app. This opens the door to a secret diagnostics menu that eerily displays itself in the toy’s eyes, like some unholy cross between Gremlins and Black Mirror.

READ MORE: Furbies Are More Unsettling Than Usual in This Horror Game

Custom audio selections can be transferred into the Furby’s memory using a program, designed by Jeija, called fluffd. It enables the toy to quote from any source: Star Wars, Donald Trump, Martin Luther King Jr.—you name it, Furby Connect can say it.

Hopefully, this novel method of Furby-hacking will herald a golden age of communications in which Furby representatives are sent to hash out differences on behalf of humans. If not, at least it gives us all something to do with the Furby Connect other than listen to its originally programmed jazz farts.

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Tuesday, 17 January 2017

This Moth With a Golden Head and Small Genitals Was Named After Trump

President-elect Donald Trump has emblazoned his surname onto buildings, board games, vodka bottles, steak products, and a smorgasbord of other commercial ventures. Now, the Trump brand will extend to the animal kingdom with the discovery of Neopalpa donaldtrumpi, a new species of twirler moth named after the politician and real estate magnate.

This centimeter-wide moth was identified by evolutionary biologist and lepidopterist Vazrick Nazari, who announced the find in a paper published Tuesday in the open-access journal ZooKeys. Nazari settled on the name N. donaldtrumpi because the silky yellow-white scales these moths develop on their heads in adulthood reminded him of the President-elect’s signature hairdo.

Holotype and paratypes of the new species Neopalpa donaldtrumpi. Image: Vazrick Nazari

The moth is native to North America, specifically California and Baja Mexico (Trump’s proposed border wall won’t stop this flyer’s migration).

By meticulously examining specimens of the moth and its close relatives, Nazari was able to catalogue its unique anatomy, including its male genitalia, which is “comparatively smaller” than the moth’s close relative Neopalpa neonata, according to the study.

Nazari, like Trump, understands the power of good marketing, and hopes that his taxonomical homage to the incoming president will raise awareness about the need to preserve its delicate environment.

"The discovery of this distinct micro-moth in the densely populated and otherwise zoologically well-studied southern California underscores the importance of conservation of the fragile habitats that still contain undescribed and threatened species," Nazari concludes in the study.

READ MORE: The Republican Plan to Dismantle the Endangered Species Act

"By naming this species after the 45th President of the United States, I hope to bring some public attention to, and interest in, the importance of alpha-taxonomy in better understanding the neglected micro-fauna component of the North American biodiversity."

Considering that the Republican Party is already gearing up to defang the Endangered Species Act of 1973, which many conservatives have argued is inefficient for conservation, Nazari’s message is more topical than ever.

Trump is not the first commander-in-chief to lend his moniker to a new species; nine animals have been named for President Barack Obama, including an extinct lizard, an Amazonian songbird, and a Hawaiian fish.

And though Nazari is the first to officially name a species after Trump, the southern flannel moth is sometimes informally called “Donald Trump’s Hair moth” because—you guessed it—it also rocks that same unmistakable cut in its caterpillar form.

Image: CDC/Wikimedia Commons

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Monday, 16 January 2017

Farewell Gene Cernan, the Last Man on the Moon

Cernan on the Moon in 1972. Image: NASA/Harrison Schmitt

Eugene Andrew Cernan, known to friends as “Gene” and to history as the last man to set foot on the Moon, passed away on Monday, surrounded by his family. He was 82. His cause of death has not been disclosed, but the family’s representative confirmed it was an ongoing health issue rather than a sudden fatality.

Born in Chicago in 1934, Cernan was an accomplished pilot and a crew member on three historic NASA spaceflights. In 1966, he traveled off Earth for the first time with fellow pioneer Tom Stafford on Gemini IX-A. The pair were originally the mission’s backup crew, but stepped up after the two original crew members tragically died in a jet crash. During this flight, Cernan completed a spacewalk in low Earth orbit that lasted over two hours.

In May 1969, Cernan served as the lunar module pilot for Apollo 10, which was considered the “dress rehearsal” for Apollo 11’s momentous landing on the Moon two months later, on July 20. Cernan was paired with Stafford again for this mission, and together with command module pilot John Young, the two astronauts practiced crucial sequences in the docking, descent, and ascent maneuvers required to land on the Moon.

They also escaped a terrifying brush with death after feeding the wrong commands into the module’s computer system, causing the spacecraft to roll violently. Without the team’s calm-under-pressure, Apollo 10 would have crashed into the Moon.

Cernan in 1969. Image: NASA

The crew of Apollo 10 joked that they had been purposely deprived of fuel for a landing in case they went rogue and decided to go for it. But fortunately, Cernan did not have to wait long before he was given command of his own landing mission: Apollo 17, NASA’s final manned mission to the Moon (at least, so far).

On December 11, 1972, he became the 11th human being to set foot on the lunar surface, after a safe touchdown in the Moon’s Taurus-Littrow Valley region. He spent a total of 22 hours outside, driving around in the lunar rover, collecting samples, conducting tests, and caring for the five mice that had been sent along with the landing crew as part of the BIOCORE cosmic ray experiment.

Three days later, after his teammate Harrison Schmitt climbed back into the lunar module, Cernan took a moment to appreciate the position he would come to hold in history.

“Bob, this is Gene,” he radioed back to mission control’s Robert Parker. “I'm on the surface; and, as I take man's last step from the surface, back home for some time to come—but we believe not too long into the future—I'd like to just [say] what I believe history will record: that America's challenge of today has forged man's destiny of tomorrow. And, as we leave the Moon at Taurus–Littrow, we leave as we came and, God willing, as we shall return, with peace and hope for all mankind. Godspeed the crew of Apollo 17.”

Cernan’s last words on the Moon, followed by some lunar pratfalls. Video: yellowzip/YouTube

This last message from a human on the Moon holds the same weight as the famous first words uttered by Neil Armstrong, echoing the sentiment that a “giant leap” had been achieved by the Apollo program.

Cernan spent his post-NASA years as a versatile corporate engineer and an enthusiastic advocate for space exploration and scientific research. He was a frequent contributor and personality on ABC News, Good Morning America, and several educational programs, and was the recipient of several awards and honors including the Distinguished Flying Cross, the NASA Exceptional Service Medal, and the Slovakian Order of the Double Cross. His 1999 memoir Last Man on the Moon, co-written with Don Davis, was the basis for a 2014 feature-length documentary of the same name.

Cernan married twice, and is survived by his second wife Jan Nanna Cernan, his daughter Tracy Cernan Woolie, his step-daughters Kelly Nanna Taff and Danielle Nanna Ellis, and nine grandchildren.

His wider legacy is sure to be defined by his gregarious personality, sense of humor, and tireless optimism about space exploration. As he concluded in his 2014 documentary: “Dream the impossible—and go out and make it happen.”

“I walked on the Moon. What can’t you do?”

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from Farewell Gene Cernan, the Last Man on the Moon

The Maiden Flight of the World’s Tiniest Orbital Rocket Ends in Failure

SS-520-4 ready for launch on Sunday, January 15. Image: NVS

On Sunday, the Japanese space agency (JAXA) attempted to launch its experimental SS-520-4 rocket for the first time. Measuring 9.5 meters (32 feet) tall, about the size of a telephone pole, the rocket is the world’s smallest and lightest booster designed to deliver satellites into orbit.

Unfortunately for JAXA, the maiden flight of this adorably tiny vehicle ended in failure. While the initial liftoff sequence and first stage performed normally, its communications system suffered a glitch and ceased transmissions about 20 seconds after the rocket blasted off from the Uchinoura Space Center, located near the town of Kimotsuki, in Kagoshima Prefecture.

The SS-520-4 was carrying an Earth-observation microsatellite orbital called TRICOM-1, a CubeSat-style spacecraft weighing 6.6 pounds, developed by researchers at the University of Tokyo. After the abort sequence, both the rocket and the satellite plummeted into the sea southeast of the space center, and have not been recovered.

Video: Satoshi Harada/YouTube

“The cause of the failure is not known at all yet,” Shinya Matsuura, an expert on JAXA, told The Japan Times. “All we can do is just analyze the data we got until communications were disrupted. I hope they won’t be discouraged and will try another launch, because demand for launches of minisatellites is growing worldwide.”

READ MORE: The Race to Build Teeny Tiny Satellite Thrusters

While JAXA is the first to have tested out one of these specialized nano-satellite launchers, it is not the only organization developing orbital launch capabilities specifically for microsatellites, especially the popular CubeSat spacecraft platform. Several private spaceflight companies are also working on models to cater to this emerging market, including Virgin Galactic, Garvey Spacecraft, and Ventions LLC.

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What the Heck Is This Giant Bow-Shaped Structure in Venus’s Skies?

Image: ©Planet-C/nakamura.masato@me.com

It’s no secret that Venus, Earth’s nearest planetary neighbor, has a penchant for mysterious behavior. But the emergence of a colossal bow-shaped structure in the planet’s upper atmosphere, captured by the Japanese Akatsuki orbiter, is pretty weird even for Venus.

Stretching across 10,000 kilometers (6,214 miles), the phenomenon was spotted by the Akatsuki no sooner than it inserted itself into orbit at the planet, on December 7, 2015. The spacecraft monitored the structure until December 12, but then had to shift focus to calibrating its orbit, attitude, and telecommunication equipment. By the time it reopened its eyes to the planet on January 15, 2016, the bow shape was gone. Classic Venus.

So, what was this bizarre archery-themed spectre in Venus’s skies? New research published Monday in Nature Geoscience suggests it was likely a stationary gravity wave generated by the flow of air through the planet’s mountainous surface topology. Essentially, airflow passing over Venus’s mountains was sculpted into waveforms that propagated upward, eventually taking the bow-shape observed by Akatsuki.

Sequential images of the cloud-top temperatures to show stationarity of the bow to the surface topography. The blue and yellow lines show the evening and morning terminators. GIF: ©Planet-C/nakamura.masato@me.com

Similar mountain gravity waves have been observed on Earth, though they are much smaller than the Venusian version, according to study co-author Makoto Taguchi, an atmospheric physicist based at Rikkyo University in Tokyo.

“For Earth, I know one example of a mountain wave generated in a geographic region over Patagonia, South America, but the length of that wave front and wavelength are ~1,000 kilometers and ~100 kilometers, respectively,” Taguchi told me over email.

In other words, Earth’s gravity waves are mere ripples compared to the enormous 10,000-kilometer-scale disturbances Akatsuki saw one planet over. Indeed, Taguchi and his colleagues claim the event was “perhaps the greatest [gravity wave] ever observed in the solar system.”

There is an obvious wow factor to beholding such a monster structure, but the wave offers more than just planetary showmanship. It also provides a rare window into Venus’s murky atmospheric underworld and surface environment.

READ MORE: Venus Is a Nightmarish Hellscape, Which Is Exactly Why We Should Study It

Venusian cloud cover is so dense that very little can be inferred about the world below. Only a few robotic probes have braved the journey through its punishing atmosphere, and fewer still survived to transmit information from the ground, so there is hardly any direct evidence of the complex variations in temperatures, pressures, and airstreams from those nether reaches.

Gravity waves, however, can be mined for clues about this hidden world, where they were forged. “Our findings imply that the temperature distributions in the lower atmosphere can be inferred from the bow-shaped pattern seen in the cloud tops,” Taguchi told me. “Emergence of the bows reflects the variability of the temperature distributions or climatology of the lower atmosphere.”

Still, it will take much more observational data from Akatsuki, and any future Venus probes, to reconstruct the complicated forces at work under this atmospheric veil. “We have found more than 15 bows in the data obtained in one year,” Taguchi said. “We are now studying spatial distribution, local time dependence, horizontal scale, and amplitude of the bows. We have to accumulate more data for a statistical study.”

Brightness temperature and UV brightness of the Venus disk. Image: ©Planet-C/nakamura.masato@me.com

Some US-based Venus experts are worried that American missions to this beautiful yet nightmarish world seem to be falling out of fashion, especially in light of NASA’s recent decision to fund two Discovery-class asteroid missions instead of two proposed Venus missions.

“Our community is passionate about Venus, but we’re getting pretty thin,” said geophysicist Robert Grimm, a program director in the space science division of the Southwest Research Institute, in a January 10 Ars Technica article. “We basically have a huge generation gap with Venus, and we really need something to launch in the early-to mid-2020s so we can maintain some kind of continuity.”

Akatsuki’s extraordinary finds, including its observations of Venus’s large-scale gravity waves, show that there really is a fantastic payoff to Venusian missions, if only for the planet’s unapologetic WTF-ness.

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The ‘Hidden Figures’ of NASA’s Early Years and the Woman Who Told Their Story

The golden age of American space exploration is emblematized by figures like Mercury Seven pioneer John Glenn, Apollo 11 astronaut Neil Armstrong, and the steel-nerved flight director Gene Kranz, who led the effort to bring the Apollo 13 crew safely home to Earth.

But for every man who returned from space to ticker-tape parades and international celebrity, there were thousands of men and women from diverse backgrounds working behind-the-scenes at NASA, and its predecessor NACA.

Among their ranks were a group of African-American female mathematicians based at NASA’s Langley Research Center in Hampton, Virginia. These brilliant women were hired to crunch numbers for the center’s aviation and aeronautics projects; their work contributed to major technological victories, including Chuck Yeager’s breaking of the sound barrier in 1947, John Glenn’s 1962 historic orbital flight in Friendship 7, and the Apollo Moon landings.

The story of these women is recounted in Hidden Figures: The American Dream and the Untold Story of the Black Women Mathematicians Who Helped Win the Space Race, written by Hampton native Margot Lee Shetterly, a former investment banker and media entrepreneur whose father was a research scientist at Langley. The book, published in fall 2016, was adapted into a recently released film of the same name—currently leading the US box office.

READ MORE: Watch Taraji P. Henson Play a NASA Mathematician in 'Hidden Figures'

The book delves deep into the story of these “West Area Computers,” so named because they were confined to the “colored” section in Langley’s west wing, in compliance with Jim Crow segregation laws.

The stark contrast between the unforgettable milestones these women helped achieve—advancing humanity literally to the Moon and back—and the regressive attitudes they had to endure can be stunning. Shetterly does a thorough job of teasing out numerous complex perspectives during Langley’s early years, focusing in particular on the stories of mathematicians Dorothy Vaughan, Mary Jackson, Christine Darden, and Katherine Johnson.

“In the office, the women felt equal,” she writes, “but in the cafeteria, and in the bathrooms designated for colored girls, the signs were a reminder that even within the meritocracy of the US Civil Service, even after Executive Order 8802, some were more equal than others.”

“Even the group’s anodyne title was both descriptive and a little deceptive, allowing the laboratory to comply with the Fair Employment Act—West Computing was simply a functional description on the organizational chart—while simultaneously appeasing the Commonwealth of Virginia’s discriminatory separate-but-equal statutes.”

NASA has significantly diversified its workforce since the Space Race, and is running a series of short biographies showcasing the careers of African-American women working at the agency today. Projects like Future Katherine Johnsons, a collaboration between 20th Century Fox and the nonprofit organization Black Girls Code, aim to encourage new generations of black women to pursue STEM careers.

NASA mathematician Katherine Johnson receives a Presidential Medal of Freedom in 2015. Video: YouTube/NASA

Still, the fact that it took decades for the West Area Computers to receive widespread public recognition for their vital contributions to American history shows that there is plenty of work left to do.

Motherboard spoke with Shetterly about these extraordinary Langley pioneers, and the ongoing invisibility many people still face in STEM fields. As we reflect on the legacy of Martin Luther King Jr. this Monday, the barriers these women helped break—from the speed of sound to the indignity of workplace segregation—are more relevant than ever.

Motherboard: You had to weave together a lot in Hidden Figures, between the scientific research, the social history, and also personal anecdotes that gave a sense of the personalities and experiences of these women. How did you approach researching and sourcing the book, and creating one narrative out of all those elements?

Margot Lee Shetterly: I spent three years pulling all the information together, and the first thing I did were interviews [...] with women who were local and still alive, and their families. Then it was a matter of weaving in a lot of the documentary stuff.

Fortunately, at NASA Langley, there’s a woman named Mary Gainer, who retired last year, but she was just phenomenal historian and she had done a ton of recovery work. She had found and digitized photos, research reports, telephone books, and employee newsletters from 1942.

You still hear women in general, and women of color in particular, talking about feeling invisible

Obviously, [the book] is about the work these women did, so probably the highest hill that I had to scale was to really teach myself enough about aerodynamics and applied math to write about it clearly.

Another amazing source were the black community papers, like the Norfolk Journal and Guide, which was the primary black newspaper in southeastern Virginia, and had tentacles beyond that. That’s where I found, for example, the little blurb that talks about Dorothy Vaughan first setting off from Farmville, Virginia, to take a job at Langley. That’s where I found the cover image of the 11 first computers who took a job in 1943.

Once that happened, it was a matter of deciding who were the right people to tell the story. Katherine Johnson was an obvious one; people have been writing about Katherine Johnson since 1962, so she’s well-known.

But the other women—Dorothy Vaughan, Mary Jackson, and Christine Darden—each of them is exceptional in some fashion, and spent their entire careers at Langley. So, it was a great way to tell the story of the black community, to tell the story of the larger group of women, and to tell the story of the evolution of aerodynamics and spaceflight. That’s sort of the long-winded answer.

Hidden Figures addresses both the accomplishments of the West Area Computers and the prejudices they faced in the social climate of the time. How did you strike that balance?

My focus was really on the women. They experienced the work, the prejudice, the gender bias, and the love for their craft of being a mathematician or an engineer. They had friendships with the white engineers. Like all of us, they had different identities: they were black, they were women, they were scientists, they were mothers, they were all these different things.

I think focusing on the individual women made it possible, through each of their personalities, characters, and experiences, to connect to the larger picture. What’s really interesting obviously compared to today’s standard, what was going on [at Langley]—with segregated bathrooms and cafeterias and stuff that was really regressive—the thing that’s amazing is that compared to most other places, it was kind of a progressive place.

The fact that these women were able to get in the door, particularly the black women, [to work] in this male-dominated environment, was more progressive than most jobs available to women in general, and specifically to black women.

Do you think those prejudices are still somewhat alive at NASA, or STEM institutes more broadly, or have they been largely left behind?

I tell you what’s really interesting; I just flew back from the Joint Mathematics Meetings, the largest convention of mathematicians in the world, with about 6,000 mathematicians attending.

They honored the women of Hidden Figures. It was one of the most remarkable things to stand in a hugely packed room talking to a group of mathematicians, talking about the work that these women did. The event had been sponsored by the National Association of Mathematicians, which is a group focused on African-American mathematicians, and the Association of Women in Mathematics, which is a group of female mathematicians from all backgrounds.

Hidden Figures trailer. Video: 20th Century Fox/YouTube

The thing that was just remarkable, when you talk to those people, is both how far it’s come [...] yet you still hear women in general, and women of color in particular, talking about feeling invisible, and getting a lot of energy from this story, because even though it took place 60 or 70 years ago, a lot of the things that they’re experiencing still ring true to them.

We have made tremendous progress but there is still a lot to do, and I think part of the problem is this invisibility. It’s not just the fact that there need to be greater numbers and better inclusion in these fields, but that people who are there, who are female or people of color, that they are actually seen. Not just seen by the majority of society, but seen by each other.

Is that persistent invisibility why you went for the title Hidden Figures?

I think that was like the fifth title or something [laughs]. There were a lot of titles that weren’t quite right, and I can even remember when that one snapped into focus, but it was just like, “okay, that’s it.”

I liked that it was sort of a pithy title, very succinct, and that the meaning refers both to the women and to the numerical work that they did—that everyone did. You see Chuck Yeager breaking the sound barrier, you see Neil Armstrong landing on the Moon, and you have no idea how many years and how many numbers it took to evolve to the point where that was possible, so it refers to both of those things.

Then afterwards, I found out, it is also the title of an Air Force pilot aptitude test for spatial reasoning. That was a serendipitous thing I discovered after deciding on the title for the book.

A lot of commentators have reacted to Hidden Figures with the question: “Why haven’t I heard this story before?” What kind of role do you think storytellers play in terms of rooting out and sharing these underrepresented stories?

This is my first book. Obviously, it’s my first movie. All of this stuff is big firsts. I never had an idea before how powerful it is to be able to tell a story. It’s a really powerful thing.

I think the role is really to find those facts, that an individual sees that others don’t. I happen to have been a black woman who is the daughter of a black research scientist working at NASA, living in a community where a lot of people worked for NASA, and many are black or female or both. That gave me a unique perspective, and a way into both the details and the emotional content and context for the story.

That’s really what this is for me: My version of America and the American dream and social mobility. It’s thrilling to me to have come upon this story and have a chance to tell it because I think it’s an amazing American story.

This interview has been edited for content and clarity.

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from The ‘Hidden Figures’ of NASA’s Early Years and the Woman Who Told Their Story

Sunday, 15 January 2017

The Milky Way Stole Some of Its Outer Stars from Another Galaxy

Milky Way galaxy from Summit Lake, WV. Image: ForestWander

The Milky Way is packed with an estimated 400 billion stars, most of which are homegrown. But despite this abundance of native star stuff, our galaxy is not above pilfering a few choice stellar gems off of other galaxies that stray too close to its gravitational pull.

According to new research forthcoming in the The Astrophysical Journal, this scenario explains the origins of some of the most far-flung stars in the Milky Way, located a full 300,000 light years from Earth.

The study was led by Marion Dierickx, a graduate student at the Harvard-Smithsonian Center for Astrophysics (CfA), with contributions from her PhD advisor Avi Loeb, a prolific Harvard physicist. The pair simulated the interactive history between our galaxy and the Sagittarius dwarf galaxy, a smaller cluster of star junk that orbits the Milky Way. They found that the positions and velocities of five of those distant stars match models of the orbital passes the galaxies have made with each other over the last eight billion years.

In other words, the Milky Way appears to have been plucking stars from Sagittarius whenever it has come into close contact with this satellite galaxy. As a result, Sagittarius has lost about a third of its original star population and 90 percent of its dark matter to its larger neighbor.

What’s more, the study suggests that these objects are part of hidden “streams” of stars, which are stellar tendrils that have been dislodged from neighboring galaxies by the Milky Way. "The star streams that have been mapped so far are like creeks compared to the giant river of stars we predict will be observed eventually," said Dierickx in a statement. "More interlopers from Sagittarius are out there just waiting to be found.”

READ MORE: The Milky Way Is Full of Weird Invisible Noodles, Astronomers Say

Such rivers of stars are estimated to stretch out about one million light years from the Milky Way’s center, and have already been partially detected by the Sloan Digital Sky Survey. Hopefully, future instruments like the Large Synoptic Survey Telescope, due for first light in 2019, will be able to further resolve these dim celestial bridges between galaxies.

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Monday, 9 January 2017

The Moon May Have Started as Dozens of ‘Moonlets'

Some 4.5 billion years ago, an object the size of Mars smashed into the embryonic Earth. This devastating collision created a debris field around our young planet that eventually coalesced into the Moon.

This idea, called the giant impact hypothesis, has accumulated compelling evidence, but there are still missing pieces of the puzzle. For instance, it does not fully account for the near-identical isotopic signatures of Earth and the Moon (meaning they are made of the same material). If a Mars-sized impactor really did wallop our planet during its infancy, it’s odd that it didn’t contribute more of its own debris to the fallout.

Concept art of giant impact hypothesis. Image: NASA/JPL-Caltech

A study published on Monday in Nature Geoscience suggests that this incongruity could be explained if the Moon was formed as a result of around 20 smaller impacts, instead of one colossal dust-up between worlds.

A team led by Raluca Rufu, an astrophysicist based at the Weizmann Institute of Science in Rehovot, Israel, ran 864 simulations of the infant Earth getting bombarded by objects much smaller than Mars over a period of millions of years. The results showed that such impacts could produce debris fields that in turn fuse into tiny “moonlets,” objects no more than ten percent the mass of the Moon. These mini-moons could gradually migrate away from Earth and become building blocks of the developing satellite.

READ MORE: The Origins of Life Could Be Buried on the Moon

According to Gareth Collins, a planetary scientist based at Imperial College London and the author of a News & Views article accompanying the new research, Rufu’s moonlet hypothesis resolves the isotopic problem because “the Moon becomes a blend of multiple compositional signatures, rather than two, and so the effect of each impactor on bulk composition is reduced.”

“It is rather like mixing colours: the more distinct colours you add, the less change each new one makes until the result is dark brown,” Collins said.

The paper posits a promising alternative to the giant impact hypothesis, but it will take much more evidence to determine which scenario is more likely to have forged the Moon.

For her part, Rufu plans to run further simulations with a tighter focus on the process by which moonlets might accrete into a proto-Moon. “We will test the merging process of these moonlets to understand what is the mixing efficiency of individual moonlets within the final Moon,” she told me over email.

In addition, lunar rocks collected from different regions of the Moon could shed more light on our natural satellite’s origins. Fortunately, lunar sample return missions are back in style, with China set to use its Chang’e 5 mission to send home some Moon samples by the end of 2017. Hopefully, it will be the first of many 21st century missions to bring back these lunar keepsakes, which are essential to understanding our planetary history.

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How Tequila Helped Save This Endangered Bat

Next time you order a shot of tequila, take a moment to toast the lesser long-nosed bat, which has been brought back from the brink of extinction partly because of this much beloved agave-based liquor.

Once reduced to a population of just a few thousand individuals, the species was placed on Mexico’s endangered species list in 1994, and on the corresponding American list in 1998. Now, thanks to the efforts of conservationists, including tequila producers, the bat has recovered to an estimated number of 200,000 individuals, prompting the US Fish and Wildlife Service to propose removing it from the endangered species list in 2017.

"Many entities in both the US and Mexico have worked tirelessly toward recovery and this announcement stands as testimony that dedicated efforts and sound management practices can lead to recovery of endangered species," said Jim deVos, assistant director of wildlife management at the Arizona Game and Fish Department, in a statement released Thursday.

READ MORE: This Medicine-Misting Bat Cave ‘Air Freshener’ Could Ward Off a Deadly Disease

A major component of the recovery effort focused on the production of “bat-friendly tequila.” No, it’s not tequila made for imbibement by bats, though it’s worth noting that these iconic flying mammals are not above the occasional alcoholic bender.

Rather, bat-friendly tequila refers to liquor farmed by companies that allow their blue agave crops to blossom naturally, instead of prematurely harvesting them before their flowers appear. The lesser long-nosed bat is an avid pollinator of night-blooming plants like agave, and colonies swarm out of their roosts at night to forage for nectar. When agaves are given the time to mature and bloom, bat populations noticeably proliferate, in turn making the crops healthier and more diverse.

Conservation initiatives spearheaded by prolific ecologist Rodrigo Medellín, nicknamed “the Bat Man of Mexico,” have resulted in greater public awareness about bats as essential players in the desert ecosystem—along with their crucial role in the creation of good tequila. As a result, major tequila brands are now beginning to offer bat-friendly versions of the drink.

“This is nothing short of a dream come true," Medellín told National Geographic in fall 2016. “It will help save the bat and tequila at the same time.”

So raise up that shot and let’s say salut, cheers, and l'chaim to the future of this beloved beverage and the bats that have made it possible.

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from How Tequila Helped Save This Endangered Bat

Sunday, 8 January 2017

Milky Way and Andromeda Galaxies Apparently Launch ‘Spitballs’ at Each Other

In the center of our Milky Way galaxy, 26,000 light years from Earth, lives a supermassive black hole called Sagittarius A*. Its mass, equivalent to about four million Suns, is stuffed entirely behind an event horizon stretching across eight million miles, smaller than the distance between Mercury and the Sun. Needless to say, it is a pretty weird place, so it should be no surprise that it exhibits weird behavior.

Still, chewing up stars and spitting out their remains in the form of planet-sized gas balls traveling at insane speeds? That’s kooky even for you, Sagittarius A*. But new research presented this week at the 2017 American Astronomical Society meeting demonstrates that the Milky Way’s black hole may genuinely play this game of “cosmic spitball,” as researchers described it.

Here’s how it goes down, according to lead author Eden Girma, a Harvard University undergraduate student and Banneker/Aztlán Institute member: Every 10,000 years or so, an unlucky star ventures too close to Sagittarius A*, falls into its deadly tidal embrace, and gets torn to shreds.

Sagittarius A* region. Image: NASA/CXC/MIT/F. Baganoff, R. Shcherbakov et al.

Over the course of 50 simulations of these interactions, Girma and her mentor, Harvard astrophysicist James Guillochon, observed that the ripped-up chunks of star stuff can coagulate into gas balls ranging in size from Neptune-scale objects to worlds many times larger than Jupiter. The extreme environment of the black hole catapults these balls into space at speeds of 20 million miles per hour, so fast they can escape the galaxy entirely.

"A single shredded star can form hundreds of these planet-mass objects,” Girma said in a statement. A whopping 95 percent of the simulated objects were flung into intergalactic space, perhaps reaching neighboring galaxies like Andromeda. Likewise, Guillochon said, Andromeda’s supermassive black hole may be launching similar stellar projectiles back at the Milky Way. "Other galaxies like Andromeda are shooting these 'spitballs' at us all the time," he noted.

The remainder of the objects were either locked in orbit around Sagittarius A*, or migrated to the outer regions of the Milky Way. Some of them of them may be within a few hundred light years of Earth.

READ MORE: Earth-Sized Telescope Bags Magnetic Fields from the Milky Way's Black Hole Core

At the moment, nobody has actually produced a hard visual on any of these objects, but next generation observatories like the Large Synoptic Survey Telescope and James Webb Space Telescope may be equipped to spot them. Until then, it’s enough to add “forging stellar spitballs in supermassive black holes” to the list of the universe’s most bizarre hijinx.

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Thursday, 5 January 2017

The Dawn of Colossal Spacecraft May Be Nearer Than You Think

Stanford torus community concept design. Image: Don Davis

From Battlestar Galactica to the imperial Death Star, the world of fiction is rife with gargantuan spacecraft capable of supporting thousands of residents with their own personal quarters and facilities.

But for real astronauts, spaceflight is not quite so, well, spacious. Take the International Space Station (ISS), which is the largest spacefaring vessel ever built, as well as the most expensive single construction project in human history, costing the US alone around $100 billion. Its first module was launched in November 1998, and its first long-duration crew, consisting of three people, arrived onboard two years later.

With an internal pressurized volume of 32,898 cubic feet, roughly equal to the interior of a Boeing 747, the ISS is a far cry from the cavernous starships we’re used to seeing in science fiction and fantasy. That said, the station and its predecessors are enormously helpful testbeds in the quest to develop even more massive spaceships down the line. Like the Mir space station, which flew from 1986 to 2001, the modules of the ISS were launched separately and assembled in space, like some high-stakes orbital LEGO kit.

Animation depicting assembly sequence of ISS. Video: NASA Johnson/YouTube

The cost of blasting separate components out of Earth’s powerful gravitational grasp is exorbitant, but the microgravity environment into which they are deployed offers considerable advantages for large engineering projects. What better place to construct colossal architectures than outer space, where immensely heavy structures are rendered functionally weightless and easily maneuverable by smaller spacecraft, or human astronauts? Indeed, anyone who has toyed around with the Kerbal Space Program is probably already familiar with the benefits of in situ orbital manufacturing.

Of course, there’s a big difference between throwing together spacecraft in a computer game, and assembling them in real life. Fortunately, the global space community has been steadily working towards achieving the centuries-old dream of big off-Earth structures that can support both robotic and human spaceflight missions.

Just last month, for instance, NASA announced its finalists for the Breakthrough, Innovative and Game-changing (BIG) Idea Challenge, which annually solicits concepts for emerging spaceflight platforms. In 2017, the BIG Challenge is focusing on designing modular spacecraft, powered by solar electric propulsion, that could ferry cargo from low Earth orbit to lunar distant retrograde orbit (LDRO).

Concept art of potential BIG idea design. Image: Analytical Mechanics Associates

According to Keith Belvin, the principal technologist for structures, materials and nanotechnology at NASA’s Space Technology Mission Directorate—and a judge for the BIG Challenge—LDRO is a particularly useful place to park and assemble large spacecraft because it has a much weaker gravity well relative to low Earth orbit.

“LDRO is about a 6,000 kilometer orbit [around the Moon],” Belvin told me over the phone. “It’s really nice for a lot of reasons. It’s pretty easy to access. It’s pretty easy to leave from. So, that could form a good staging location. If we developed a satellite assembly construction in situ manufacturing servicing capability in this orbit, then we could launch vehicles in pieces, and assemble them in that orbit.”

LDRO could even function as a service and refueling checkpoint for spacecraft returning from distant locations around the solar system. “Let’s suppose that we go to Phobos [one of Mars’ two moons] or do a Mars-type mission,” Belvin said. “When the vehicle comes back, instead of coming back to Earth and burning up, we would bring it back to LDRO, refurbish it, and use it again for another mission.”

The ability to reuse spacecraft in this way would drastically reduce the cost of robotic deep space exploration, while also spurring the kind of infrastructures crucial for human exploration to more distant worlds like Mars. It will take an enormous amount of money, time, and effort to build these orbital truck-stops, but the back-end payoff of paving a super-roadway in space would be well worth it, according to author and spaceflight advocate Howard Bloom.

“Why move NASA into space highway construction?” Bloom asked in a recent Scientific American article. “Because no one else will do it. And our future in space depends on it. Our future share in a space economy that United Launch Alliance (a joint venture rocket company from Boeing and Lockheed Martin) estimates will be worth $2.7 trillion in 30 years.”

This notion of building cumulatively larger, more robust, and more efficient modular structures in space could lay the groundwork for the kinds of futuristic space communities we’ve grown accustomed to seeing in fiction—like O’Neill cylinders or city-sized starships—even if that process takes decades, or even centuries.

O’Neill cylinder concept design. Image: Rick Guidice/NASA Ames Research Center

In the meantime, there are plenty of other massive spacecraft concepts aimed towards solving problems on our own planet. One of the most prominent is the longstanding dream of building solar power plants in space, where sunlight is abundant and unfiltered by atmospheric interference. Over time, researchers have produced numerous captivating concept designs for space-based solar arrays measuring a kilometer across, or more. These systems could deliver green energy to locations all around the world, while also powering orbital systems or deep space missions.

There are many hurdles left to clear before this lofty goal can be accomplished, but scientists, including Belvin, think space-based solar power is a technically sound possibility over the near term.

“I think the technology is almost there,” Belvin told me. “There’s a lot of engineering that has to take place to make it efficient and cost-effective. But I think of the Apollo Program, starting in the early 1960s, and that had to be a dream, to go to the Moon. If there’s the money, and the will, you can do a lot in a decade. So, if anybody says: ‘Hey, we’ve got to have an orbiting power system,’ for whatever reason, I think we could do it within a decade.”

READ MORE: Everything We Know About Beaming Solar Power to Earth from Space

It’s exciting to know that the space sector is beginning to close in on these ambitious projects, constrained mainly by funding and resources rather than the technology itself. And while it’s tricky to predict what kind of vessel will overtake the ISS as the largest spacefaring structure in history, the fact that there are so many potential candidates in the works right now is a cause for celebration.

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from The Dawn of Colossal Spacecraft May Be Nearer Than You Think

Wednesday, 4 January 2017

NASA Announces Exotic Asteroid Missions, Fueling Space Mining Hopes

On Wednesday, NASA officially greenlit two new missions for its Discovery Program, an initiative that focuses on low-cost spaceflight endeavors (their development is capped at $450 million each) with high scientific yields.

The winning spacecraft are named Lucy and Psyche; Lucy is set to visit a whopping six Trojan asteroids, a class of space rocks in Jupiter’s vicinity, while Psyche will journey to a curious world called 16 Psyche, thought to be the exposed metallic core of a protoplanet.

Both missions aim to expand our knowledge of the early solar system, when the Sun was a wee 10 million-year-old stellar infant. (It’s a middle-aged 4.6 billion years old today.)

“These are true missions of discovery that integrate into NASA’s larger strategy of investigating how the solar system formed and evolved,” said Jim Green, NASA’s planetary science director, in a statement.

“We’ve explored terrestrial planets, gas giants, and a range of other bodies orbiting the Sun,” Green continued. “Lucy will observe primitive remnants from farther out in the solar system, while Psyche will directly observe the interior of a planetary body. These additional pieces of the puzzle will help us understand how the Sun and its family of planets formed, changed over time, and became places where life could develop and be sustained—and what the future may hold.”

Jim Green announces two new Discovery Program missions. Video: NASA/YouTube

The plan is to launch Lucy in October 2021 for arrival at the main asteroid belt in 2025. From there, it will journey on to the Trojan asteroids, a diverse population of over 6,000 known objects that are thought to be relics from the genesis of the solar system. As Jupiter formed and found its orbit, the Trojans became gravitationally corralled within Lagrangian points both ahead and behind the gas giant’s path around the Sun.

Lucy, which is named for the early hominid that has shed light on humanity’s origins, will visit six of these unique objects between 2027 to 2033, studying them for clues about the origins of our larger cosmic neighborhood.

Psyche, meanwhile, is set for launch in 2023, an Earth gravity assist in 2024, and a Mars flyby in 2025. From there, it will travel to its target, arriving in 2030. With a diameter of 130 miles (210 kilometers), 16 Psyche is one of the largest asteroids known in the belt, and has long fascinated scientists due to its high iron and nickel content, which resembles the center of terrestrial planets like Earth. Scientists think 16 Psyche might have been a developing planet of its own in the early solar system, until it was bombarded down to its core by massive collisions with other objects.

“This is an opportunity to explore a new type of world—not one of rock or ice, but of metal,” said the mission’s principal investigator Lindy Elkins-Tanton in a statement. “16 Psyche is the only known object of its kind in the solar system, and this is the only way humans will ever visit a core. We learn about inner space by visiting outer space.”

Both missions are headed for fascinating targets, no doubt, but the selection has drawn some criticism in the wider science community. Commentators have pointed out that the choice to fund Psyche, with its vast and valuable metal deposits, may well be a nod to the burgeoning asteroid mining industry. In a NASA telecon held on Wednesday, Elkins-Tanton said that indeed, 16 Psyche would be a good asset for future mining, calling it potentially the “perfect stepping stone to the outer solar system.”

READ MORE: How the First Private Moon Landing Will Spur the Future of Space Mining

Meteorologist Eric Holthaus, science writer Rebecca Boyle, and geophysicist Mika McKinnon all expressed concerns on Twitter that these asteroid-focused Discovery trips are taking precedence over missions to worlds with atmospheres; missions that could help understand and even mitigate climate change on Earth.

Thread. NASA setting the stage for 21st century space capitalism & asteroid mining. https://t.co/yNPStOnBxv
— Eric Holthaus (@EricHolthaus) January 4, 2017

This is especially obvious since Lucy and Psyche were selected from a field of five candidate projects outlined in fall 2015, which included two concepts to study Venus—arguably the most useful world for climate change studies outside of Earth.

2/n As @PlanetDr noted, we will have no missions to a Solar System object with an atmosphere in the near future. No, Mars doesn’t count.
— M&M's planet tweets (@OtherOrbScience) January 4, 2017

Lucy and Psyche were also chosen over a proposal for a Near Earth Object Camera (NEOCam) which would vastly accelerate the rate at which potentially hazardous asteroids are discovered and characterized. But though it didn’t select NEOCam this year, NASA said it would extend the project’s provisional funding for another year, so perhaps it will also get the go-ahead down the line.

Discovery-class missions have developed a great track record so far; the past 12 include the Stardust trip to return a sample of a comet’s dust trail, the Kepler space telescope, which has discovered thousands of exoplanets, and the New Horizons probe that visited Pluto in July 2015. Hopefully, Lucy and Psyche live up to the successes of their forebears.

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