An anonymous reader writes: The U.S. military's Space Force branch celebrated its one-year anniversary Friday by announcing that its members would now be known as "guardians". But the name was not universally greeted with respect and appreciation. Gizmodo announced the news with a headline which read "Space Force Personnel Will Be Called 'Guardians' Because Sure, Whatever," in an article which jokingly asks how this will affect the other ranks of this branch of the military. "Does someone get promoted from Guardian to Sentinel to Space Paladin to Tython, The Secessionist King Of Mars or something?" (Their article also suggests other names the U.S. military could have considered — like "moon buddies" or "rocketeers" — even at one point proposing "starship troopers".)

Forbes wrote that "The mockery arrived instantly and in great rivers..." But there was an interesting observation from a British newspaper (which is in fact, named The Guardian). "As the Associated Press put it, delicately: 'President-elect Joe Biden has yet to reveal his plans for the space force in the next administration.'" In fact, New York magazine called the new name for members of Space Force the "strongest case yet for its demise," in an article headlined "Abolish the Space Force." ("Maybe 'stormtrooper' was too obvious...")

In an apparent bid to be taken more seriously, on Friday the Space Force also shared an official anniversary greeting they'd received from Lee Majors, the actor who'd played a cybernetically-enhanced Air Force colonel in the 1970s action series The Six Million Dollar Man (who, in later seasons, befriended Bigfoot and the alien community who'd brought him to earth).

But Mashable added sympathetically that "It's been a long year, though. If people want to draw some nerdy joy from a U.S. military branch inadvertently referencing comic books and video games, let them have their fun."

Long-time Slashdot reader cusco writes: In the first return of a lunar sample since the Soviets in 1976, the Chang'e 5 spacecraft landed Thursday in Inner Mongolia with 2 kilograms of material drilled from as much as two meters below the surface... On December 3, the ascent stage took off from the moon with the sample, docking with the orbiter three days later. After jettisoning the ascent stage the orbiter returned to Earth and was recovered December 17.

Here's a (fairly bad) video of the drilling and sample acquisition, and a video of the recovery, with an IR camera shot showing the hot lander and what appears to be a fox running past.
China's 23-day mission makes it only the third country to return samples from the moon, reports the South China Morning Post, while the drill sites are "believed to be much younger than that of the locations sampled by the Americans and the Russians..." Chinese President Xi Jinping on Thursday said space exploration knew no limits and called for new interplanetary exploration to turn China into a major power in space and realise national rejuvenation, as well as the peaceful use of space... The lander vehicle of the Chang'e 5 also for the first time unfolded a Chinese five-star national flag on the moon and will hold it there permanently, as it was abandoned after being used as a launch pad for the ascending vehicle...

With the successful completion of the mission, the Chang'e lunar programme aims to land Chinese astronauts on the nearest celestial body by 2030, and set up a permanent research space on the south pole of the moon in the future. China's space ambition goes beyond the moon. It sent a probe to Mars in July, and is preparing to launch a Chinese space station next year.

CNN reports: If it wasn't abundantly clear that content is king, especially in the Covid-19 era, Disney hammered that point home Thursday when it previewed dozens of new series and movies for its Disney+ streaming service. And investors are loving it. Shares of Disney jumped 13% Friday to a new all-time high. The stock is now up more than 20% this year, an impressive feat given that the pandemic has wreaked havoc on Disney's theme park business and forced its movie studios to delay big releases in theaters.

Investors are clearly betting that the streaming strength will offset any lingering weakness in other areas of the House of Mouse empire: Disney raised its forecast for subscriber growth and is upping prices for Disney+. Wall Street analysts rushed to upgrade Disney following Thursday's event. At least 13 analysts boosted their price targets on the stock Friday morning. While Disney initially predicted it would have 60-90 million subscribers by 2024, they're now predicting 230-260 million, CNN reported earlier this week. "The sheer scale of content announced on Thursday was a loud reminder to the rest of the streaming world that Disney+ had an amazing year, acting as a lifeboat to a company ravaged by coronavirus, and that Disney is fully committed to the future of streaming."

Besides the two new Star Wars series announced this week, Disney also announced several new series based on Marvel comic book characters:

• "The Falcon and the Winter Soldier" and "WandaVision"

• Samuel L. Jackson (as Nick Fury) in "Secret Invasion"

• Don Cheadle as War Machine in "Armor Wars"

• More Marvel-based shows about Hawkeye, Moon Knight, "Ironheart" Riri Williams, She Hulk, and Ms. Marvel

• A series of shorts titled "I Am Groot" and a "Guardians of the Galaxy Holiday Special"

Other newly-announced Disney+ shows include:

• A live action Pinocchio starring Tom Hanks
• A reboot of "The Mighty Ducks" starring Emilio Estevez

The Verge reports that a power component failed on the Orion deep-space crew capsule that NASA hopes to launch (unmanned) from its Space Launch System (or SLS) in late 2021, in a mission called Artemis 1.

The problem? It's buried deep within one of the spacecraft's power/data units (or PDUs) within the adapter that connects the capsule to its power/propulsion trunk "service module," so there's no easy way to fix it: As many as nine months would be needed to take the vehicle apart and put it back together again, in addition to three months for subsequent testing, according to the presentation. Lockheed has another option, but it's never been done before and may carry extra risks, Lockheed Martin engineers acknowledge in their presentation. To do it, engineers would have to tunnel through the adapter's exterior by removing some of the outer panels of the adapter to get to the PDU. The panels weren't designed to be removed this way, but this scenario may only take up to four months to complete if engineers figure out a way to do it. A third option is that Lockheed Martin and NASA could fly the Orion capsule as is. The PDU failed in such a way that it lost redundancy within the unit, so it can still function. But at a risk-averse agency like NASA, flying a vehicle without a backup plan is not exactly an attractive option...

If engineers choose to remove Orion from its service module, the capsule's first flight on the SLS may be delayed past its current date of November 2021. But the SLS has experienced its own set of delays: it was supposed to fly for the first time in 2017 but hasn't done so yet. It's not clear if the SLS itself will make the November 2021 flight date either; a key test of the rocket coming up at the end of the year has been pushed back, with no new target date set. So it's possible that Lockheed Martin and NASA can fix Orion before the SLS is ready to fly.

Any further delays to Artemis I add uncertainty to NASA's lunar landing timeline. NASA is hoping to land astronauts on the Moon by 2024, though many experts are skeptical that such a mission can be pulled off in time. Artemis I is vulnerable to other possible delays, but the component failure adds one more level of uncertainty to when the Orion and SLS combo will get off the ground.

Friday on Instagram Jeff Bezos shared footage from NASA's test of Blue Origin's BE-7 engine, which he described approvingly as "a high-performance, additively manufactured liquid hydrogen/liquid oxygen lunar landing engine with 10,000 lbf [pound-force] of thrust — deep throttling down to 2,000 lbf for a precise landing on the Moon."

The test brings the program's cumulative test time up to 1,245 seconds, reports Reuters: Blue Origin leads a "national team" as the prime contractor that it assembled in 2019 to help build its Blue Moon lander. That team includes Lockheed Martin Corp, Northrop Grumman Corp and Draper. Blue Origin has vied for lucrative government contracts in recent years and is competing with rival billionaire Elon Musk's SpaceX and Dynetics, owned by Leidos Holdings Inc, to win a contract to build NASA's next human lunar landing system to ferry humans to the moon in the next decade.

In April, NASA awarded a lunar lander development contract to Blue Origin's team worth $579 million, as well as two other companies: SpaceX which received $135 million to help develop its Starship system and Leidos-owned Dynetics which won $253 million. NASA is poised to pick two of the three companies "in early March" 2021 to continue building their lander prototypes for crewed missions to the moon beginning in 2024, an agency spokeswoman has said.

"A Mysterious Object Is Hurtling Towards Earth, and Scientists Don't Know What It Is," read Newsweek's headline on Monday, describing an object projected to pass 31,605 miles from earth. (One astronomer told them that was roughly 13% of the average distance between the earth and the moon).

But then a computer model calculated its past trajectories through space, according to the director for NASA's Center for Near Earth Object Studies (CNEOS). "One of the possible paths for 2020 SO brought the object very close to Earth and the Moon in late September 1966," he said in a statement. "It was like a eureka moment when a quick check of launch dates for lunar missions showed a match with the Surveyor 2 mission."

On Wednesday NASA described how a team led by Vishnu Reddy, an associate professor/planetary scientist at the Lunar and Planetary Laboratory at the University of Arizona, tried to prove what they'd seen was a 54-year-old booster rocket: Through a series of follow up observations, Reddy and his team analyzed 2020 SO's composition using NASA's IRTF and compared the spectrum data from 2020 SO with that of 301 stainless steel, the material Centaur rocket boosters were made of in the 1960's. While not immediately a perfect match, Reddy and his team persisted, realizing the discrepancy in spectrum data could be a result of analyzing fresh steel in a lab against steel that would have been exposed to the harsh conditions of space weather for 54 years. This led Reddy and his team to do some additional investigation.

"We knew that if we wanted to compare apples to apples, we'd need to try to get spectral data from another Centaur rocket booster that had been in Earth orbit for many years to then see if it better matched 2020 SO's spectrum," said Reddy. "Because of the extreme speed at which Earth-orbiting Centaur boosters travel across the sky, we knew it would be extremely difficult to lock on with the IRTF long enough to get a solid and reliable data set."

However, on the morning of Dec. 1, Reddy and his team pulled off what they thought would be impossible. They observed another Centaur D rocket booster from 1971 launch of a communication satellite that was in Geostationary Transfer Orbit, long enough to get a good spectrum. With this new data, Reddy and his team were able to compare it against 2020 SO and found the spectra to be consistent with each another, thus definitively concluding 2020 SO to also be a Centaur rocket booster...
So what happens next? 2020 SO made its closest approach to Earth on Dec. 1, 2020 and will remain within Earth's sphere of gravitational dominance — a region in space called the "Hill Sphere" that extends roughly 930,000 miles (1.5 million kilometers) from our planet — until it escapes back into a new orbit around the Sun in March 2021.

As NASA-funded telescopes survey the skies for asteroids that could pose an impact threat to Earth, the ability to distinguish between natural and artificial objects is valuable as nations continue to explore and more artificial objects find themselves in orbit about the Sun.

Astronomers will continue to observe this particular relic from the early Space Age until it's gone.

Ben Bova "was the author of more than 120 works of science fact and fiction," according to Wikipedia, and was also a six-time winner of the Hugo Award. "He was also president of both the National Space Society and the Science Fiction Writers of America."

Tor.com reports Bova has passed "due to complications from COVID-19 and a stroke..." Born in 1932, Bova brought experience to the science fiction genre that few authors could match: he worked as a technical editor for the U.S.'s Project Vanguard, the first effort on the part of the country to launch a satellite into space in 1958. Bova went on to work as a science writer for Avco Everett Research Laboratory, which built the heat shields for the Apollo 11 module, putting man on the Moon and ensuring that science fiction would continue to increasingly define the future.

It was around that time that Bova began writing and publishing science fiction. He published his first novel, The Star Conquerors, in 1959, and followed up with dozens of others in the following years, as well as numerous short stories that appeared in publications such as Amazing Stories, Analog Science Fact and Fiction, Galaxy Magazine, The Magazine of Fantasy and Science Fiction, and others. In 1971, he took over the helm of Analog following the death of its long-running editor, John W. Campbell Jr. — a huge task, given Campbell's influence on the genre to that point... From there, he became the first editor of Omni Magazine until 1982, and consulted on television shows such as The Starlost and Land of the Lost.

While Bova wrote an episode of The Land of the Lost, his best-known works "involved plausible sciences about humanity's expansion into the universe, looking at how we might adapt to live in space..." notes Tor.

The Encyclopedia of Science Fiction argues that "the straightforwardness of Bova's agenda for humanity may mark him as a figure from an earlier era; but the arguments he laces into sometimes overloaded storylines are arguments it is important, perhaps absolutely vital, to make."

China's Chang'e spacecraft has lifted off from Oceanus Procellarum at 10:10 EST Thursday, carrying with it the first fresh lunar samples since 1976. Space.com reports: Six minutes later, the ascent spacecraft achieved lunar orbit, marking a huge milestone in the Chang'e 5 mission to return lunar samples to Earth. The ascent vehicle's job now is to meet up with the Chang'e 5 orbiter while still circling the moon, and then transfer its precious cargo to a return capsule for the journey home. That next stage is an extremely challenging rendezvousing and docking between the small ascent vehicle and the Chang'e 5 orbiter while orbiting the moon. The activity needs to be automated due to the time delay in communicating across the roughly 236,000 miles (380,000 kilometers) between the Earth and the moon.

The two spacecraft will begin a final approach sometime on Saturday (Nov. 5)and complete the docking 3.5 hours later. If all goes well, China will then prepare for the final leg of the journey to deliver the first lunar samples to Earth in 44 years. The lunar samples won't be coming home immediately however. The Chang'e 5 spacecraft will need to wait in lunar orbit for a number of days for a narrow window in which to fire its engines and head for Earth.

The careful timing of this trans-Earth injection maneuver will allow the orbiter to deliver the reentry module to Earth at the precise time in order to land in Siziwang Banner, Inner Mongolia -- the same site used by the China National Space Administration to return astronauts home aboard Shenzhou spacecraft. The journey back to Earth will last 112 hours -- just over four and a half days -- before the reentry attempt. As spacecraft returning from the moon are traveling faster than those reentering from low Earth orbit, such as trips from the International Space Station, the Chang'e 5 reentry module will bounce off the atmosphere once to help it slow down before taking a final, fiery plunge to Earth.

China's Chang'e 5 mission, tasked with bringing a sample of lunar dirt back to Earth, successfully landed on the Moon on Tuesday, marking the third time that China has placed a robotic spacecraft on the lunar surface. The lander will soon begin digging up samples of lunar soil, which will be returned to our planet later this month. From a report: Chang'e 5 launched from China's Wenchang Spacecraft Launch Site on November 23rd, flying to space on top of a Long March 5 rocket. It's a complex mission consisting of four main spacecraft that will all work together to bring between 2 to 4 kilograms of lunar dirt back to Earth. The quartet traveled to the Moon attached together and got into lunar orbit on November 28th.Two of those four spacecraft include a lander and an ascent vehicle, which are stacked on top of each other. On November 28th, the pair separated from the third spacecraft, Chang'e-5's service module, which remained in orbit around the Moon. The lander and ascent module touched down on the lunar surface today, according to CGTN, though a time was not provided. Now over the next few days, the lander will use a robotic arm to drill into the lunar dirt and scoop up rocks, storing them inside a sample container.

BeerFartMoron shares a report from CBS News: China launched its most ambitious moon mission yet Monday: a robotic spacecraft expected to land on the lunar surface by the end of the week. The spacecraft is expected to collect about four pounds of rock and soil samples, and return them to Earth next month for laboratory analysis. If successful, the Chang'e 5 mission will make China only the third nation, after the United States and the former Soviet Union, to bring moon rocks back to Earth. It will also be the first to attempt the feat since Russia's Luna 24 in 1976.

The 8,335-pound Chang'e 5 spacecraft, named after the mythical Chinese goddess of the moon, is made up of four major components: a lunar orbiter, a sample return craft, a lander carrying science instruments and sample collection equipment, and a small ascent vehicle mounted atop the lander to carry the collected surface samples back up to orbit. The Chang'e 5 lander features multiple cameras, a spectrometer to assess the composition of the soil near the spacecraft and a ground-penetrating radar. A robot arm is equipped with a percussive drill and scoop to pick up excavated rock and soil. Working by remote control from Earth, engineers will use the arm to move collected samples up to the ascent vehicle, which then will blast off, rendezvous with the Chang'e 5 orbiter and transfer the sample to the return craft for the trip back to Earth. Landing in Inner Mongolia is expected around December 16. From there, the samples will be transferred to specially equipped laboratories for analysis.

Amanda Jane Hughes, Lecturer, Department of Mechanical, Materials and Aerospace Engineering at University of Liverpool Stefania, and Soldini Lecturer in Aerospace Engineering at University of Liverpool, write: A space-based solar power station could orbit to face the Sun 24 hours a day. The Earth's atmosphere also absorbs and reflects some of the Sun's light, so solar cells above the atmosphere will receive more sunlight and produce more energy. But one of the key challenges to overcome is how to assemble, launch and deploy such large structures. A single solar power station may have to be as much as 10 kilometres squared in area -- equivalent to 1,400 football pitches. Using lightweight materials will also be critical, as the biggest expense will be the cost of launching the station into space on a rocket. One proposed solution is to develop a swarm of thousands of smaller satellites that will come together and configure to form a single, large solar generator. In 2017, researchers at the California Institute of Technology outlined designs for a modular power station, consisting of thousands of ultralight solar cell tiles. They also demonstrated a prototype tile weighing just 280 grams per square metre, similar to the weight of card.

Recently, developments in manufacturing, such as 3D printing, are also being looked at for this application. At the University of Liverpool, we are exploring new manufacturing techniques for printing ultralight solar cells on to solar sails. A solar sail is a foldable, lightweight and highly reflective membrane capable of harnessing the effect of the Sun's radiation pressure to propel a spacecraft forward without fuel. We are exploring how to embed solar cells on solar sail structures to create large, fuel-free solar power stations. These methods would enable us to construct the power stations in space. Indeed, it could one day be possible to manufacture and deploy units in space from the International Space Station or the future lunar gateway station that will orbit the Moon. Such devices could in fact help provide power on the Moon. The possibilities don't end there. While we are currently reliant on materials from Earth to build power stations, scientists are also considering using resources from space for manufacturing, such as materials found on the Moon.

A group of astronomers from The University of Texas at Austin has revived an idea shelved by NASA to build a lunar liquid-mirror telescope on the moon to study the first stars in the universe. "The team, led by NASA Hubble Fellow Anna Schauer, will publish their results in an upcoming issue of The Astrophysical Journal," reports Phys.Org. From the report: These first stars formed about 13 billion years ago. They are unique, born out of a mix of hydrogen and helium gasses, and likely tens or 100 times larger than the Sun. New calculations by Schauer show that a previously proposed facility, a liquid mirror telescope that would operate from the surface of the Moon, could study these stars. Proposed in 2008 by a team led by Roger Angel of The University of Arizona, this facility was called the Lunar Liquid-Mirror Telescope (LLMT). NASA had done an analysis on this proposed facility a decade ago, but decided not to pursue the project. According to Niv Drory, a senior research scientist with UT Austin's McDonald Observatory, the supporting science on the earliest stars did not exist at that point. "This telescope is perfect for that problem," he said.

The proposed lunar liquid-mirror telescope, which Schauer has nicknamed the "Ultimately Large Telescope," would have a mirror 100 meters in diameter. It would operate autonomously from the lunar surface, receiving power from a solar power collection station on the Moon, and relaying data to satellite in lunar orbit. Rather than coated glass, the telescope's mirror would be made of liquid, as it's lighter, and thus cheaper, to transport to the Moon. The telescope's mirror would be a spinning vat of liquid, topped by a metallic -- and thus reflective -- liquid. (Previous liquid mirror telescopes have used mercury.) The vat would spin continuously, to keep the surface of the liquid in the correct paraboloid shape to work as a mirror. The telescope would be stationary, situated inside a crater at the Moon's north or south pole. To study the first stars, it would stare at the same patch of sky continuously, to collect as much light from them as possible. The team is proposing that the astronomical community revisit the shelved plan for a lunar liquid-mirror telescope, as a way to study these first stars in the universe.

An anonymous reader shares a report: The pandemic is helping Japan's demon slayers, monsters and robots make the leap to the global market. Animated video in the Japanese style -- aka anime -- has long been a niche taste for fans in the U.S. and elsewhere, and some anime films such as those by Hayao Miyazaki have become mainstream hits. Now, with the pandemic putting a premium on escapist video content, the business is getting hotter. Streaming services such as Netflix and Amazon Prime are scouring the globe for fresh content, from documentaries to calming videos, and anime has an advantage over live-action content because it doesn't require actors and crew to expose themselves to virus contagion. With the latest anime hit bringing in hundreds of millions of dollars in Japan, industry players say the next year is likely to bring more deals and more content for the U.S. "I used to have the sense that the anime category was spreading widely around the world, but what we're seeing these days is a big leap beyond that," said Taiki Sakurai, Netflix's chief anime producer. "The global anime fan base is expanding rapidly." Last month, Netflix said it had 16 projects in the works at its Tokyo-based anime production hub, including "Godzilla" and "Transformers" titles, with plans for global distribution that it said were pushed forward by the evidence of higher demand.

Netflix, which hired a creative team dedicated to anime production in Tokyo four years ago, said more than 100 million households around the world watched at least one anime title on the streaming site in the year to September 2020, growing by 50% from a year earlier. Anime titles have appeared in the top-10 list in nearly 100 countries this year, it said. Amazon Prime also features a wealth of anime titles. The financial reports of Tokyo-based Toei Animation, the studio responsible for anime such as the "Dragon Ball" and "Sailor Moon" franchises, give a glimpse into how the industry is changing. Four years ago, revenue received from outside Japan accounted for one-third of Toei Animation's overall revenue. The overseas portion rose to half of the total in the year ended this past March, and overseas revenue more than doubled to the equivalent of $243 million, with "Dragon Ball" programs available on streaming services such as Hulu in the U.S. In the most recent six months, overseas sales rose to nearly three-fifths of the total.

A British firm has won a European Space Agency contract to develop the technology to turn moon dust and rocks into oxygen, leaving behind aluminium, iron and other metal powders for lunar construction workers to build with. The Guardian reports: If the process can be made to work well enough, it will pave the way for extraction facilities on the moon that make oxygen and valuable materials on the surface, rather than having to haul them into space at enormous cost. Analyses of rocks brought back from the moon reveal that oxygen makes up about 45% of the material by weight. The remainder is largely iron, aluminium and silicon. In work published this year, scientists at Metalysis and the University of Glasgow found they could extract 96% of the oxygen from simulated lunar soil, leaving useful metal alloy powders behind.

The Esa contract will fund Metalysis for nine months to perfect an electrochemical process that releases oxygen from lunar dust and rocks by sending an electrical current through the material. The process is already used on Earth, but the oxygen is released as an unwanted byproduct of mineral extraction. To make it work for lunar explorers, the oxygen must be captured and stored. Under the contract, the firm will try to boost the yield and purity of oxygen and metals from the rock while reducing the amount of energy the process consumes. If the technology looks promising, the next step will be to demonstrate oxygen extraction on the moon. The oxygen released from the lunar surface can be combined with other gases to produce breathable air, but it is also a vital component of rocket propellant that could be manufactured on the moon and used to refuel spacecraft bound for deep space.

NASA's 322-foot rocket "Space Launch System" rocket "would be the most powerful rocket ever flown, eclipsing both the Saturn V that flew astronauts to the moon and SpaceX's Falcon Heavy," reports the Washington Post.

But "it's not the rocket's engines that concern officials but the software that will control everything the rocket does, from setting its trajectory to opening individual valves to open and close." Computing power has become as critical to rockets as the brute force that lifts them out of Earth's atmosphere, especially rockets like the SLS, which is really an amalgamation of parts built by a variety of manufacturers: Boeing builds the rocket's "core stage," the main part of the vehicle. Lockheed Martin builds the Orion spacecraft. Aerojet Rocketdyne and Northrop Grumman are responsible for the RS-25 engines and the side boosters, respectively. And the United Launch Alliance handles the upper stage. All of those components need to work together for a mission to be successful. But NASA's Aerospace Safety Advisory Panel recently said it was concerned about the disjointed way the complicated system was being developed and tested...

Also troubling to the safety panel was that NASA and its contractors appeared not to have taken "advantage of the lessons learned" from the botched flight last year of Boeing's Starliner spacecraft, which suffered a pair of software errors that prevented it from docking with the International Space Station as planned and forced controllers to cut the mission short. NASA has since said that it did a poor job of overseeing Boeing on the Starliner program, and has since vowed to have more rigorous reviews of its work, especially its software testing...

NASA pushed back on the safety panel's findings, saying in a statement that "all software, hardware, and combination for every phase of the Artemis I mission is thoroughly tested and evaluated to ensure that it meets NASA's strict safety requirements and is fully qualified for human spaceflight." The agency and its contractors are "conducting integrated end-to-end testing for the software, hardware, avionics and integrated systems needed to fly Artemis missions," it said.

CNN reports: Saturn's largest moon, Titan, is the only moon in our solar system that has a thick atmosphere. It's four times denser than Earth's. And now, scientists have discovered a molecule in it that has never been found in any other atmosphere.

The particle is called cyclopropenylidene, or C3H2, and it's made of carbon and hydrogen. This simple carbon-based molecule could be a precursor that contributes to chemical reactions that may create complex compounds.

And those compounds could be the basis for potential life on Titan.

The molecule was first noticed as researchers used the Atacama Large Millimeter/submillimeter Array of telescopes in Chile. This radio telescope observatory captures a range of light signatures, which revealed the molecule among the unique chemistry of Titan's atmosphere. The study published earlier this month in the Astronomical Journal...

"We're trying to figure out if Titan is habitable," said Rosaly Lopes, a senior research scientist and Titan expert at JPL, in a statement. "So we want to know what compounds from the atmosphere get to the surface, and then, whether that material can get through the ice crust to the ocean below, because we think the ocean is where the habitable conditions are."

NASA has confirmed the presence of water on the moon's sunlit surface, a breakthrough that suggests the chemical compound that is vital to life on Earth could be distributed across more parts of the lunar surface than the ice that has previously been found in dark and cold areas. From a report: "We don't know yet if we can use it as a resource," NASA Administrator Jim Bridenstine said, but he added that learning more about the water is crucial to U.S. plans to explore the moon. The discovery comes from the space agency's Stratospheric Observatory for Infrared Astronomy, or SOFIA -- a modified Boeing 747 that can take its large telescope high into Earth's atmosphere, at altitudes up to 45,000 feet. Those heights allow researchers to peer at objects in space with hardly any visual disruptions from water vapor. The water molecules are in Clavius crater, a large crater in the moon's southern hemisphere. To detect the molecules, SOFIA used a special infrared camera that can discern between water's specific wavelength of 6.1 microns and that of its close chemical relative hydroxyl, or OH. "Data from this location reveal water in concentrations of 100 to 412 parts per million -- roughly equivalent to a 12-ounce bottle of water -- trapped in a cubic meter of soil spread across the lunar surface," NASA said in a release about the discovery.

"This is not puddles of water but instead water molecules that are so spread apart that they do not form ice or liquid water," said Casey Honniball, the lead author of a study about the discovery. The data confirm what experts have suspected, that water might exist on the moon's sunny side. But in recent years, researchers had been able to document only water ice at the moon's poles and other darker and colder areas. Experts will now try to figure out exactly how the water came to form and why it persists. NASA scientists published their findings in the latest issue of Nature Astronomy.

Using NASA's Chandra X-ray Observatory, astronomers have discovered that "gravitational redshift" exists in two stars orbiting each other in our galaxy about 29,000 light years (200,000 trillion miles) away from Earth. Gravitational redshifts, where light is shifted to redder colors because of gravity, "have tangible impacts on modern life, as scientists and engineers must take them into account to enable accurate positions for GPS," reports Phys.Org. From the report: The intriguing system known as 4U 1916-053 contains two stars in a remarkably close orbit. One is the core of a star that has had its outer layers stripped away, leaving a star that is much denser than the Sun. The other is a neutron star, an even denser object created when a massive star collapses in a supernova explosion. The neutron star (grey) is shown in this artist's impression at the center of a disk of hot gas pulled away from its companion (white star on left). These two compact stars are only about 215,000 miles apart, roughly the distance between the Earth and the Moon. While the Moon orbits our planet once a month, the dense companion star in 4U 1916-053 whips around the neutron star and completes a full orbit in only 50 minutes.

In the new work on 4U 1916-053, the team analyzed X-ray spectra -- that is, the amounts of X-rays at different wavelengths -- from Chandra. They found the characteristic signature of the absorption of X-ray light by iron and silicon in the spectra. In three separate observations with Chandra, the data show a sharp drop in the detected amount of X-rays close to the wavelengths where the iron or silicon atoms are expected to absorb the X-rays. One of the spectra showing absorption by iron -- the dips on the left and right -- is included in the main graphic. An additional graphic shows a spectrum with absorption by silicon. In both spectra the data are shown in grey and a computer model in red.

However, the wavelengths of these characteristic signatures of iron and silicon were shifted to longer, or redder wavelengths compared to the laboratory values found here on Earth (shown with the blue, vertical line for each absorption signature). The researchers found that the shift of the absorption features was the same in each of the three Chandra observations, and that it was too large to be explained by motion away from us. Instead they concluded it was caused by gravitational redshift. The article goes on to explain how gravitational redshifts connect with Einstein's General Theory Relativity: "As predicted by Einstein's theory, clocks under the force of gravity run at a slower rate than clocks viewed from a distant region experiencing weaker gravity. This means that clocks on Earth observed from orbiting satellites run at a slower rate. To have the high precision needed for GPS, this effect needs to be taken into account or there will be small differences in time that would add up quickly, calculating inaccurate positions..."

The findings have been published in the Astrophysical Journal.

NASA will announce an exciting new discovery about the Moon from the Stratospheric Observatory for Infrared Astronomy (SOFIA) at a media teleconference at 12 p.m. EDT Monday, Oct. 26. Audio of the teleconference will stream live on the agency's website. From a press release: This new discovery contributes to NASA's efforts to learn about the Moon in support of deep space exploration. Under NASA's Artemis program, the agency will send the first woman and next man to the lunar surface in 2024 to prepare for our next giant leap -- human exploration of Mars as early as the 2030s. Understanding the science of the Moon also helps piece together the broader history of the inner solar system.

With competition among Earth's telecoms providers as fierce as ever, equipment maker Nokia has announced its expansion into a new market, winning a deal to install the first cellular network on the moon. From a report: The Finnish equipment manufacturer said it was selected by NASA to deploy an "ultra-compact, low-power, space-hardened" wireless 4G network on the lunar surface, as part of the US space agency's plan to establish a long-term human presence on the moon by 2030. The $14.1m contract, awarded to Nokia's US subsidiary, is part of Nasa's Artemis programme which aims to send the first woman, and next man, to the moon by 2024. The astronauts will begin carrying out detailed experiments and explorations which the agency hopes will help it develop its first human mission to Mars. Nokia's network equipment will be installed remotely on the moon's surface using a lunar hopper built by Intuitive Machines in late 2022, Nokia said. "The network will self-configure upon deployment," the firm said in a statement, adding that the wireless technology will allow for "vital command and control functions, remote control of lunar rovers, real-time navigation and streaming of high definition video."