For decades Mars has teased scientists with whispers of water's presence. Now they have some solid evidence. From a report: The Italian Space Agency announced Wednesday that researchers have detected signs of a large, stable body of liquid water locked away beneath a mile of ice near Mars' south pole. The observations were recorded by the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument -- Marsis for short. "Marsis was born to make this kind of discovery, and now it has," says Roberto Orosei, a radioastronomer at the National Institute for Astrophysics, who led the investigation. His team's findings, which appear in this week's issue of Science, raise tantalizing questions about the planet's geology -- and its potential for harboring life. CNN elaborates: Between May 2012 and December 2015, MARSIS was used to survey the Planum Australe region, which is in the southern ice cap of Mars. It sent radar pulses through the surface and polar ice caps and measured how the radio waves reflected back to Mars Express. Those pulses reflected 29 sets of radar samples that created a map of drastic change in signal almost a mile below the surface. It stretched about 12.5 miles across and looked very similar to lakes that are found beneath Greenland and Antarctic ice sheets on Earth. The radar reflected the feature's brightness, signaling that it's water. "We interpret this feature as a stable body of liquid water on Mars," the authors wrote in the study.

Scientists from Birkbeck, University of London speculate that recent results show that the moon is wetter than scientists have previously thought, increasing the possibility for it to have the necessary conditions for life. "Whether life ever arose on the Moon, or was transported to it from elsewhere, is of course highly speculative and can only be addressed by an aggressive future program of lunar exploration," they write in the article, published in the journal Astrobiology. Gizmodo summarizes: This habitability period, if it really occurred, might have happened either just after the Moon's formation from a massive collision with Earth 4.5 billion years ago, or 3.5 billion years ago, after a period of volcanism which may have resulted in a thin lunar atmosphere. Such an atmosphere would have lasted perhaps tens of millions of years. Maybe water existed on the Moon at this point. Maybe 10 million years was enough time for some rudimentary life to evolve on the Moon. Maybe Earthly life traveled over to the Moon on asteroids. Who knows.

The researchers stress that "habitability requires much more than just the presence of a significant atmosphere and liquid water." One such requirement would be the presence of organic compounds. And there are obviously not the same water-created features on the Moon that we see here on Earth or on Mars, like drainage channels -- though maybe these existed and were eroded by small meteors and solar winds. While the paper doesn't present new data, it's an interesting synthesis of lots of existing research demonstrating that, since the Moon is wetter than was initially thought, maybe it's worth wondering whether it was once habitable.

An anonymous reader shares a report: Inside a sealed clean room near Toulouse, France, Maurice Sylvestre points out something called SuperCam. Sylvestre is outfitted in Tyvex and hairnets, necessary to keep out dust, skin particles, and dirt that could mar the super-smooth surface of his device. SuperCam sits underneath a ventilator hood, glimmering inside a golden-metallic housing. The device is designed to scan the Martian surface with a camera, laser, and spectrometer in hopes of finding organic compounds that could be related to early life on Mars. In two years, this 12-pound, microwave oven-sized unit will blast off as part of the Mars 2020 mission, a spacecraft/lander/rover combo by NASA and its partners that will replace the long-serving Curiosity mission.

Sylvestre is a planetary scientist at France's Institute for Research and Planetary Astronomy, and deputy principal investigator for SuperCam. But he's an international collaborator: Over the years, he's worked on missions to Saturn, the moon, and Mars with NASA colleagues. Sylvestre's lab is currently building an instrument similar to SuperCam that will fly to Mercury on the European-Japanese BepiColombo mission, as well as one called Eclair that is part of a joint French-Chinese satellite. Notably, that makes him one of a small number of planetary scientists who are working with China to boost their science, while doing his best to keep Western technology from getting pilfered. It's a tightrope that not everyone is willing to walk. "We are careful what we are doing," Sylvestre says.

"We understand the security issues. We understand that we should be careful and not be too naive. But at the same time I feel the idea of planetary exploration is for everyone." Working with both NASA and China may seem like a contradiction, or even a conflict. The two superpowers are butting heads on trade, military, and cybersecurity issues. Congress has banned NASA officials and NASA money from going to China. That might be because of a recent history of Chinese espionage targeting US military, aerospace, and technological secrets.

An anonymous reader shares a report: Over 40 years ago, a NASA mission may have accidentally destroyed what would have been the first discovery of organic molecules on Mars, according to a report from New Scientist. Recently, NASA caused quite a commotion when it announced that its Curiosity rover discovered organic molecules -- which make up life as we know it -- on Mars. This followed the first confirmation of organic molecules on Mars in 2014. But because small, carbon-rich meteorites so frequently pelt the Red Planet, scientists have suspected for decades that organics exist on Mars.

But researchers were stunned in 1976, when NASA sent two Viking landers to Mars to search for organics for the first time and found absolutely none. Scientists didn't know what to make of the Viking findings -- how could there be no organics on Mars? "It was just completely unexpected and inconsistent with what we knew," Chris McKay, a planetary scientist at NASA's Ames Research Center, told New Scientist.

"The wealthy are plotting to leave us behind," writes Douglas Rushkoff, describing what he learned from a high-paying speaking gig about the future of technology for "five super-wealthy guys...from the upper echelon of the hedge fund world," -- and what it says about perceptions of technology today. The Event. That was their euphemism for the environmental collapse, social unrest, nuclear explosion, unstoppable virus, or Mr. Robot hack that takes everything down. This single question occupied us for the rest of the hour. They knew armed guards would be required to protect their compounds from the angry mobs. But how would they pay the guards once money was worthless? What would stop the guards from choosing their own leader...?

That's when it hit me: At least as far as these gentlemen were concerned, this was a talk about the future of technology. Taking their cue from Elon Musk colonizing Mars, Peter Thiel reversing the aging process, or Sam Altman and Ray Kurzweil uploading their minds into supercomputers, they were preparing for a digital future that had a whole lot less to do with making the world a better place than it did with transcending the human condition altogether and insulating themselves from a very real and present danger of climate change, rising sea levels, mass migrations, global pandemics, nativist panic, and resource depletion. For them, the future of technology is really about just one thing: escape.

There's nothing wrong with madly optimistic appraisals of how technology might benefit human society. But the current drive for a post-human utopia is something else. It's less a vision for the wholesale migration of humanity to a new state of being than a quest to transcend all that is human: the body, interdependence, compassion, vulnerability, and complexity.... It's a reduction of human evolution to a video game that someone wins by finding the escape hatch and then letting a few of his BFFs come along for the ride... The future became less a thing we create through our present-day choices or hopes for humankind than a predestined scenario we bet on with our venture capital but arrive at passively. This freed everyone from the moral implications of their activities... Ultimately, according to the technosolutionist orthodoxy, the human future climaxes by uploading our consciousness to a computer or, perhaps better, accepting that technology itself is our evolutionary successor.
The piece -- titled "Survival of the Richest" -- is an interesting read, and ends by suggesting this inspiring counter-philosophy.

"Being human is not about individual survival or escape. It's a team sport."

This week NASA's Dawn space probe swooped within 22 miles of the surface of Ceres, the dwarf planet that's the largest object in the asteroid belt between Mars and Jupiter. NASA's JPL reports: In more than three years of orbiting Ceres, Dawn's lowest altitude before this month was 240 miles (385 kilometers), so the data from this current orbit bring the dwarf planet into much sharper focus... "[T]he results are better than we had ever hoped," said Dawn's chief engineer and project manager, Marc Rayman, of NASA's Jet Propulsion Laboratory, Pasadena, California. "Dawn is like a master artist, adding rich details to the otherworldly beauty in its intimate portrait of Ceres."
EarthSky reports NASA captured an up-close glimpse of those tantalizing bright spots on Ceres: The spots, evaporate deposits composed of sodium carbonate, are thought to be left over from when water came up to the surface from deeper below and then evaporated in the extremely tenuous and sporadic water vapor "atmosphere." That water could be either from a shallow sub-surface reservoir or from a deeper reservoir of salty brines percolating upward through fractures. The deposits in Occator Crater are the largest and brightest of these deposits. As with many discoveries in planetary science, they were completely unexpected, and show that Ceres is not just an inert ball of rock and ice.
Slashdot reader thegameiam adds: Ceres may have more fresh water than exists on Earth. Perhaps this would make colonization of the asteroid belt more of a possibility?

The United States wants to send robotic explorers to the moon as soon as next year as a preparatory step toward sending astronauts back there for the first time since 1972, a NASA official said on Monday. From a report: The National Aeronautics and Space Administration is planning a series of lunar missions beginning next year aimed at developing the capacity for a return to the moon, said Cheryl Warner, a spokeswoman for NASA's Human Exploration Directorate. NASA will work with private companies, which have not yet been chosen, on the missions, Warner said in a phone interview. U.S. President Donald Trump in December signed a directive that he said would enable astronauts to return to the moon and eventually lead a mission to Mars. Last month he ordered the government to review regulations on commercial space flights.

According to NASA, the Mars Opportunity rover is currently trying to survive an intensifying dust storm on the red planet. "The storm's atmospheric opacity -- the veil of dust blowing around, which can blot out sunlight -- is now much worse than a 2007 storm that Opportunity weathered," reports NASA. "The previous storm had an opacity level, or tau, somewhere above 5.5; this new storm had an estimated tau of 10.8 as of Sunday morning." Engadget reports: The storm was first detected on Friday June 1st by the Mars Reconnaissance Orbiter, at which point the rover's team was notified because of the weather event's proximity to Opportunity. The rover uses solar panels, so a dust storm could have an extremely negative impact on Opportunity's power levels and its batteries. By Wednesday June 6th, Opportunity was in minimal operations mode because of sharply decreasing power levels. The brave little rover is continuing to weather the storm; it sent a transmission back to Earth Sunday morning, which is a good sign. It means there's still enough charge left in the batteries to communicate with home, despite the fact that the storm is continuing to worsen.

NASA's veteran Curiosity rover has found complex organic matter buried and preserved in ancient sediments that formed a vast lake bed on Mars more than 3bn years ago. From a report: The discovery is the most compelling evidence yet that long before the planet became the parched world it is today, Martian lakes were a rich soup of carbon-based compounds that are necessary for life, at least as we know it. Researchers cannot tell how the organic material formed and so leave open the crucial question: are the compounds remnants of past organisms; the product of chemical reactions with rocks; or were they brought to Mars in comets or other falling debris that slammed into the surface? All look the same in the tests performed. But whatever the ultimate source of the material, if microbial life did find a foothold on Mars, the presence of organics meant it would not have gone hungry. "We know that on Earth microorganisms eat all sorts of organics. It's a valuable food source for them," said Jennifer Eigenbrode, a biogeochemist at NASA's Goddard Space Flight Center in Maryland. The Curiosity rover also discovered that methane on the red planet changes with the seasons. The Verge: Where the methane is coming from is still a mystery, but scientists have some ideas, including that microbes may be the source of the gas. Researchers at NASA and other US universities analyzed five years' worth of methane measurements Curiosity took at Gale Crater, where the rover landed in 2012. Curiosity detected background levels of methane of about 0.4 parts per billion, which is a tiny amount. (In comparison, Earth's atmosphere has about 1,800 parts per billion of methane.) Those levels of methane, however, were found to range from 0.2 to about 0.7 parts per billion, with concentrations peaking near the end of the summer in the northern hemisphere, according to a study published today in Science. This seasonal cycle repeated through time and could come from an underground reservoir of methane, the study says. Whether that reservoir is a sign that there is or was life on Mars, however, is impossible to say for now.

Pew Research: Sixty years after the founding of the National Aeronautics and Space Administration (NASA), most Americans believe the United States should be at the forefront of global leadership in space exploration. Majorities say the International Space Station has been a good investment for the country and that, on balance, NASA is still vital to the future of U.S. space exploration even as private space companies emerge as increasingly important players. Roughly seven-in-ten Americans (72%) say it is essential for the U.S. to continue to be a world leader in space exploration, and eight-in-ten (80%) say the space station has been a good investment for the country, according to a new Pew Research Center survey conducted March 27-April 9, 2018. These survey results come at a time when NASA finds itself in a much different world from the one that existed when the Apollo astronauts first set foot on the moon nearly half a century ago. The Cold War space race has receded into history, but other countries (including China, Japan and India) have emerged as significant international players in space exploration. Another finding in the report: Most Americans would like NASA to focus on Earth, instead of Mars.

An anonymous reader quotes a report from Phys.Org: Rakesh Mogul, a Cal Poly Pomona professor of biological chemistry, was the lead author of an article in the journal Astrobiology that offers the first biochemical evidence explaining the reason the contamination persists. To figure out how the spacecraft microbiome survives in the cleanroom facilities, the research team analyzed several Acinetobacter strains that were originally isolated from the Mars Odyssey and Phoenix spacecraft facilities. They found that under very nutrient-restricted conditions, most of the tested strains grew on and biodegraded the cleaning agents used during spacecraft assembly. The work showed that cultures grew on ethyl alcohol as a sole carbon source while displaying reasonable tolerances towards oxidative stress. This is important since oxidative stress is associated with desiccating and high radiation environments similar to Mars. The tested strains were also able to biodegrade isopropyl alcohol and Kleenol 30, two other cleaning agents commonly used, with these products potentially serving as energy sources for the microbiome.

NASA is sending a small, autonomous rotorcraft to Mars via the agency's Mars 2020 rover mission, currently scheduled to launch in July 2020. NASA says the goal of the mission is to "demonstrate the viability and potential of heavier-than-air vehicles on the Red Planet." BBC reports: Its design team spent more than four years shrinking a working helicopter to "the size of a softball" and cutting its weight to 1.8kg (4lbs). It is specifically designed to fly in the atmosphere of Mars, which is 100 times thinner than Earth's. NASA describes the helicopter as a "heavier-than-air" aircraft because the other type -- sometimes called an aerostat -- refers to aircraft like balloons and blimps. The helicopter's two blades will spin at close to 3,000 revolutions a minute, which NASA says is about 10 times faster than a standard helicopter on Earth.

In preparation for a crewed mission into orbit, NASA safety advisers are warning that the super-cold propellant SpaceX uses in their Falcon 9 rockets could be "a potential safety risk." When SpaceX is about to launch a rocket, they load it up with propellant at super-cold temperatures to shrink its size, allowing them to pack more of it into the tanks. "At those extreme temperatures, the propellant would need to be loaded just before takeoff -- while astronauts are aboard," reports Chicago Tribune. "An accident, or a spark, during this maneuver, known as 'load-and-go,' could set off an explosion." From the report: One watchdog group labeled load-and-go a "potential safety risk." A NASA advisory group warned in a letter that the method was "contrary to booster safety criteria that has been in place for over 50 years." The fueling issue is emerging as a point of tension between the safety-obsessed space agency and the maverick company run by Musk, a tech entrepreneur who is well known for his flair for the dramatic and for pushing boundaries of rocket science. The concerns from some at NASA are shared by others. John Mulholland, who oversees Boeing's contract to fly astronauts to the International Space Station and once worked on the space shuttle, said load-and-go fueling was rejected by NASA in the past because "we never could get comfortable with the safety risks that you would take with that approach. When you're loading densified propellants, it is not an inherently stable situation."

Greg Autry, a business professor at the University of Southern California, said the load-and-go procedures were a heated issue when he served on Trump's NASA transition team. "NASA is supposed to be a risk-taking organization," he said. "But every time we would mention accepting risk in human spaceflight, the NASA people would say, 'But, oh, you have to remember the scar tissue' -- and they were talking about the two shuttle disasters. They seemed to have become victims of the past and unwilling to try anything new, because of that scar tissue."

"This is a big day. We're going back to Mars," said one NASA official, presiding over this morning's launch of the first Mars surface craft to lift off since 2011. CNN reports: The Atlas V 401 rocket also carried two suitcase-size spacecraft, designed to orbit Mars, as it blasted into the dark and cloudy sky, which turned bright gold for seconds as the rocket ascended in a plume of smoke... After a six-month journey, if it all goes as planned, InSight -- whose name is short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport -- will touch down just north of the Martian equator on November 26, joining five other NASA spacecraft operating on and above Mars.

The 790-pound (358-kilogram) probe will then begin its two-year science mission to seek the "fingerprints" of the processes that formed the rocky planets of the solar system. It will measure the planet's "vital signs: 'its "pulse' (seismology), 'temperature' (heat flow) and 'reflexes' (precision tracking)," according to NASA. The explorer doesn't have wheels, so it can't roll around gathering up dirt to study. But it does have a 7.8-foot-long (2.4-meter) robotic arm. The arm will place a seismometer on the ground to detect "marsquakes" (think earthquakes, but on Mars, of course). InSight also will burrow 10 to 16 feet into the crust of Mars, going 15 times deeper than any previous Martian mission, according to NASA.
The rocket is carrying two briefcase-sized satellites (named Wall-E and Eva) which will demonstrate that cubesats can survey journeys to other planets.

Two microchips have also been affixed to the lander carrying the names of 2.4 million space enthusiasts -- including William Shatner.

An anonymous reader quotes a report from NPR: NASA and the U.S. Department of Energy say they have successfully tested a new type of nuclear reactor that could one day provide juice to colonies on other worlds. The reactor can power several homes and appears able to operate in harsh environments. The new reactor uses more-conventional uranium fuel. Using a "core" about the size of a paper towel roll, the reactor can turn pistons that can run a generator. The generator can put out about 10 kilowatts of electrical power -- enough to run a few small homes. Scientists believe it could run continuously for a decade or so, making deep space travel a lot simpler. They also gave it a catchy acronym: KRUSTY, which stands for Kilopower Reactor Using Stirling TechnologY.

To see if it actually worked, scientists tested KRUSTY out in the Nevada desert on America's old nuclear test range. They put KRUSTY through its paces, culminating in a 28-hour test at full power. The team also simulated failures in KRUSTY's reactor components to show it wouldn't result in a meltdown on Mars. KRUSTY may find its way onto future space probes. Researchers say they might use an ensemble of four or five of the reactors to power colonies on the moon (which has 14-day nights, when the sun isn't available) or Mars.

Diamonds found in a meteorite that exploded over the Nubian desert in Sudan a decade ago were formed deep inside a "lost planet" that once circled the sun in the early solar system, scientists say. From a report: Microscopic analyses of the meteorite's tiny diamonds revealed they contain compounds that are produced under intense pressure, suggesting the diamonds formed far beneath the surface of a planet. In this case, the mysterious world was calculated to be somewhere between Mercury and Mars in size. Astronomers have long hypothesised that dozens of fledgling planets, ranging in size from the moon to Mars, formed in the first 10m years of the solar system and were broken apart and repackaged in violent collisions that ultimately created the terrestrial planets that orbit the sun today.

An anonymous reader quotes a report from The Verge: NASA may make some big changes to the first couple flights of its future deep-space rocket, the Space Launch System, after getting a recent funding boost from Congress to build a new launch platform. When humans fly on the rocket for the first time in the 2020s, they might ride on a less powerful version of the vehicle than NASA had expected. If the changes move forward, it could scale down the first crewed mission into deep space in more than 45 years. The SLS has been in development for the last decade, and when complete, it will be NASA's main rocket for taking astronauts to the Moon and Mars. NASA has long planned to debut the SLS with two crucial test missions. The first flight, called EM-1, will be uncrewed, and it will send the smallest planned version of the rocket on a three-week long trip around the Moon. Three years later, NASA plans to launch a bigger, more powerful version of the rocket around the Moon with a two-person crew -- a mission called EM-2.

But now, NASA may delay that rocket upgrade and fly the same small version of the SLS for the crewed flight instead. If that happens, NASA would need to come up with a different type of mission for the crew to do since they won't be riding on the more powerful version of the vehicle. "If EM-2 flies that way, we would have to change the mission profile because we can't do what we could do if we had the [larger SLS]," Robert Lightfoot, NASA's acting administrator, said during a Congressional hearing yesterday. NASA clarified that astronauts would still fly around the Moon on the second flight. However, the rocket would not be able to carry extra science payloads as NASA had originally planned. "The primary objective for EM-2 is to demonstrate critical functions with crew aboard, including mission planning, system performance, crew interfaces, and navigation and guidance in deep space, which can be accomplished on a Block 1 SLS," a NASA spokesperson said in a statement to The Verge.

On stage at SXSW, Elon Musk issued yet another incredibly ambitious timeline. During a Q&A session on Sunday, Musk said SpaceX will be ready to fly its Mars rocket in 2019. He said: We are building the first ship, or interplanetary ship, right now, and we'll probably be able to do short flights, short up and down flights, during the first half of next year. Further reading: Fortune.

An anonymous reader writes: In 1938, CBS radio aired Orson Welles' dramatization of H.G. Wells' The War of the Worlds ; the broadcast was livened up by periodic "news bulletins" reporting strange activity on Mars and in New Jersey. There may or may have not been men on Mars at the time, and later opinions also differ on whether the broadcast caused widespread panic across the U.S. Eighty years later, scientists are again claiming to have found evidence on earth of Martian life. Well, not exactly Martian life... Washington State University reports: "For the first time, researchers have seen life rebounding in the world's driest desert, demonstrating that it could also be lurking in the soils of Mars. Led by Washington State University planetary scientist Dirk Schulze-Makuch, an international team studied the driest corner of South America's Atacama Desert, where decades pass without any rain. Scientists have long wondered whether microbes in the soil of this hyperarid environment, the most similar place on Earth to the Martian surface, are permanent residents or merely dying vestiges of life, blown in by the weather. Billions of years ago, Mars had small oceans and lakes where early lifeforms may have thrived. As the planet dried up and grew colder, these organisms could have evolved many of the adaptations lifeforms in the Atacama soil use to survive on Earth, Schulze-Makuch said. 'We know there is water frozen in the Martian soil and recent research strongly suggests nightly snowfalls and other increased moisture events near the surface,' he said. 'If life ever evolved on Mars, our research suggests it could have found a subsurface niche beneath today's severely hyper-arid surface.'" The study has been published in the journal Proceedings of the National Academy of Sciences.

sciencehabit shares a report from Science Magazine: SpaceX CEO Elon Musk grabbed the world's attention last week after launching his Tesla Roadster into space. But his publicity stunt has a half-life way beyond even what he could imagine -- the Roadster should continue to orbit through the solar system, perhaps slightly battered by micrometeorites, for a few tens of millions of years. Now, a group of researchers specializing in orbital dynamics has analyzed the car's orbit for the next few million years. And although it's impossible to map it out precisely, there is a small chance that one day it could return and crash into Earth. But don't panic: That chance is just 6% over a million years, and it would likely burn up as it entered the atmosphere.

Hanno Rein of the University of Toronto in Canada and his colleagues regularly model the motions of planets and exoplanets. "We have all the software ready, and when we saw the launch last week we thought, 'Let's see what happens.' So we ran the [Tesla's] orbit forward for several million years," he says. The Falcon Heavy rocket from SpaceX propelled the car out toward Mars, but the sun's gravity will bring it swinging in again some months from now in an elliptical orbit, so it will repeatedly cross the orbits of Mars, Earth, and Venus until it sustains a fatal accident. The Roadster's first close encounter with Earth will be in 2091 -- the first of many in the millennia to come.