The idea of using dirt on the Moon to manufacture solar cells, which could power a permanent human settlement, may seem outlandish, but two companies say they've made big progress on that front: they each say they've already made solar cells using fake Moon dirt. From a report: Jeff Bezos' company Blue Origin says it's been making solar cells this way since 2021 but just made that information public in a blog post on Friday. Separately, Lunar Resources, which aims to develop technologies for the "large-scale industrialization of Space," told The Verge in a call today that it's been doing the same for the last couple of years. Each company still has to make an enormous leap: from crafting solar cells out of fake dirt in Earth-bound labs to accomplishing the same thing on the harsh surface of the Moon. But this is a dream decades in the making. And if their technologies succeed, they could help make it possible to build outposts on the Moon. The idea of tapping the Moon's resources to support human settlements, called in-situ resource utilization (ISRU) in technical speak, has only recently moved out of the realm of science fiction. Now, with its Artemis program, NASA is looking to establish "the first long-term presence on the Moon."

An anonymous reader quotes a report from Ars Technica: On Friday, in a blog post not even promoted by the company's Twitter account or a news release, Blue Origin quietly said its "Blue Alchemist" program has been working on [using the dusty lunar surface to manufacture solar panels] for the last two years. The company, founded by Jeff Bezos, has made both solar cells and electricity transmission wires from simulated lunar soil -- a material that is chemically and mineralogically equivalent to lunar regolith. The engineering work is based on a process known as "molten regolith electrolysis," and Blue Origin has advanced the state of the art for solar cell manufacturing. In this process, a direct electric current is applied to the simulated regolith at a high temperature, above 1,600-degrees Celsius. Through this electrolysis process, iron, silicon, and aluminum can be extracted from the lunar regolith. Blue Origin says it has produced silicon to more than 99.999 percent purity through molten regolith electrolysis.

The key advance made by Blue Alchemist is that its engineers and scientists have taken the byproducts of this reaction -- and these materials alone -- to fabricate solar cells as well as the protective glass cover that would allow them to survive a decade or longer on the lunar surface. Blue Origin will attempt to market the technology to NASA for use by its Artemis program to return humans to the Moon in a "sustainable" way. NASA and its international partners seek to differentiate Artemis from the Apollo program by more extended stays on the Moon and building infrastructure such as power systems.

"Although our vision is technically ambitious, our technology is real now," the company said in its blog post. "Blue Origin's goal of producing solar power using only lunar resources is aligned with NASA's highest priority Moon-to-Mars infrastructure development objective." This is a notable research breakthrough, as the same electrolysis process could also be used to produce metals for building habitats and other structures, as well as oxygen. These are all important for "living off the land" if humans are to avoid the expense of needing to bring everything from Earth to live and work in space. While it is a long way from lab experiments to manufacturing on the Moon, these experiments are a critical first step.

A mini-planet orbiting in the frigid outer reaches of the solar system has a Saturn-like ring of dust and debris that defies the rules of physics, a new study has revealed. Space.com reports: The planet in question is called Quaoar and it's the seventh largest of the known dwarf planets of which Pluto is the king. Discovered in 2002 and about 697 miles wide (1,121 kilometers), Quaoar is one of the so-called trans-Neptunian objects, small planets orbiting beyond the solar system's outermost planet Neptune. Residing in the Kuiper Belt, the doughnut-shaped ring of rocky and icy debris in the outer solar system, Quaoar is a proud owner of its own moon, the 100-mile-wide (160 km) Weywot. And a recent observation campaign revealed that it also has a ring of material in its orbit. [...]

Quaoar's ring is at a very unusual distance from its parent body. In fact, before astronomers discovered Quaoar's ring in observations from several telescopes conducted between 2018 and 2021, they had thought that it was impossible for a ring to exist at such a distance. With a radius of about 2,420 miles (3,885 km) from Quaoar's center, the ring is too far away from the dwarf planet that its gravity should no longer be able to keep the material dispersed. Instead, it should coalesce under its own gravity and form another moon, just like Weywot. By not having done that, the ring has breached what astronomers call the Roche limit, the first known ring around a celestial body to have done so. [...] Now astronomers have to either rethink the Roche limit or come up with another explanation for the existence of Quaoar's ring. The study was published in the journal Nature.

In a study published Wednesday in PLOS Climate, a group of astrophysicists proposes shooting lunar dust into space to help partially shield sunlight to Earth. The Washington Post reports: The team used computer simulations to model various scenarios where massive quantities of dust (and we mean a lot of dust) in space can reduce the amount of Earthbound sunlight by 1 to 2 percent, or up to about six days of an obscured sun in a year. Their cheapest and most efficient idea is to launch dust from the moon, which would land into orbit between the sun and Earth and create a sunshade. Yes, the idea sounds like science fiction. Yes, it would require (a lot of) new engineering. Yes, there are more feasible climate mitigation tactics that can be employed now and in the near future. But the researchers view this rigorous physics experiment as a backup option that could aid -- not replace -- existing strategies to help humankind live on a more comfortable Earth. [...]

In the new study, the authors concede their idea isn't perfect but say it addresses some problems with previous concepts. For instance, the amount of material needed to actually shade the sun exceeds 10 billion kilograms (22 billion pounds), which is about 100 times more mass than humans have ever sent into space. Bromley says dust is very efficient at scattering sunlight relative to its size. The team considered different types of dust, scattering properties and size. The team found that aggregates of fluffy and highly porous particles scattered light the best, but they opted for a particle perhaps more easily accessible in space: moon dust. "We really do focus on lunar dust, just plain old, as-it-is lunar dust, without any indication of changing its shape," said Bromley, who said future moon mining could excavate the dust needed. Perhaps the greatest challenge is getting the right material exactly where you need it, Bromley said.

In one computer simulation, the team shot lunar dust from the moon's surface toward the sun. Bromley said the device to launch the lunar dust into space could be something similar to an electromagnetic gun, cannon or rocket -- picture a T-shirt cannon sending dust into orbit. In the simulation, the dust scattered along various routes until the team found suitable trajectories, which allowed the dust to concentrate temporarily and act as a sun shield. Bromley said the dust would periodically disperse away from Earth and throughout the solar system. In another simulation, the team shot off dust from a space platform about 1 million miles from Earth. This would be in an area known as L1 (Lagrange point 1), where objects tend to stay put because of equal gravitational pulls between the sun and Earth. This idea required more astronomical cost and effort because they would need a space platform and a dust supply that could be easily replenished. In either scenario, people on the ground wouldn't be able to see the shield or feel any difference, although some tools would probably be able to detect changes in the incoming solar radiation.

Bill Gates is calling for "high-voltage transmission lines that can carry electricity long distances," calling them the key to a clean-energy future: [M]any of the best places to generate lots of electricity are far away from urban centers... so to maximize clean energy's potential, we're going to need much longer lines to move that power from where it's made to where it's needed.... Beyond being old and outdated, there's another big problem making everything worse: Our grid is fragmented. Most people (including me a lot of the time) talk about the "electric grid" as if it's one single grid covering the whole nation from coast to coast, but it's actually a complicated patchwork of systems with different levels of connection to one another.

Our convoluted network prevents communities from importing energy when challenges like extreme weather shut off their power. It also prevents power from new clean energy projects from making it to people's homes. Right now, over 1,000 gigawatts worth of potential clean energy projects are waiting for approval — about the current size of the entire U.S. grid — and the primary reason for the bottleneck is the lack of transmission. Complicating things further is the fact that new infrastructure projects are typically planned and executed by hundreds of individual utility companies that aren't required to coordinate.
Gates calls for new federal funding and policies , but also faults the permitting processes at the state level as "long, convoluted, and often outdated." As a result, we don't build lines fast enough, and we're slower than other countries. Some states — like New Mexico and Colorado — are doing innovative work to speed up the process. But there is a lot more room for policymakers to work together and make the permit process easier.

Although transmission is primarily a policy problem, innovation will help too. For example, grid-enhancing technologies like dynamic line ratings, power flow controls, and topology optimization could increase the capacity of the existing system. Breakthrough Energy Ventures, which is part of the climate initiative I helped start, has invested in new technologies like advanced conductors and superconductors — wires that use cutting-edge materials to get more energy out of smaller lines. But these technologies aren't a substitute for real systemic improvements and building lines in places where they don't already exist.
"By the 2030s, we need to build so many new lines that they would reach to the moon if they were strung together," Gates says in a video accompanying the article. "And by 2050, we'll need to more than double the size of the grid, while replacing most of the existing wires." But noting today's power grid problems, Gates writes optimistically that "It doesn't have to be this way."

And he ultimately believes that modernized power grids "will lead to lower emissions, cleaner air, more jobs, fewer blackouts, more energy and economic security, and healthier communities across the country."

Satellite navigation systems for lunar settlements will require local atomic clocks. Scientists are working out what time they will keep. From a report: It's not obvious what form a universal lunar time would take. Clocks on Earth and the Moon naturally tick at different speeds, because of the differing gravitational fields of the two bodies. Official lunar time could be based on a clock system designed to synchronize with UTC, or it could be independent of Earth time. Representatives of space agencies and academic organizations worldwide met in November 2022 to start drafting recommendations on how to define lunar time at the European Space Research and Technology Centre of the European Space Agency (ESA) in Noordwijk, the Netherlands.

Decisions must be made soon, says Patrizia Tavella, who leads the time department at the International Bureau of Weights and Measures in Sevres, France. If an official lunar time is not established, space agencies and private companies will come up with their own solutions, she says. "This is why we want to raise an alert now, saying let's work together to take a common decision." The most pressing need for lunar time comes from plans to create a dedicated global satellite navigation system (GNSS) for the Moon, similar to how GPS and other satellite navigation networks enable precise location tracking on Earth.

Space agencies plan to install this lunar GNSS from around 2030. ESA approved a lunar satellite navigation project called Moonlight at its ministerial council meeting on 22 and 23 November 2022 in Paris, and NASA established a similar project, called Lunar Communications Relay and Navigation Systems, last January. Until now, Moon missions have pinpointed their locations using radio signals sent to large antennas on Earth at scheduled times. But with dozens of missions planned, "there's just not enough resources to cover everybody," says Joel Parker, an engineer who works on lunar navigation at the Goddard Center.

From Science magazine: Cave Johnson is almost ready to start a new study in his secret underground facility. The founder of the Michigan-based technology company Aperture Science, he's invented a portal gun that allows people to teleport to various locations. Now, he and his colleagues want to see whether they can make portals appear on previously unfit surfaces with a new "conversion gel" containing moon dust. "It may be toxic. We are unsure," he wrote in a recent research proposal.

To test the gel, Johnson plans to recruit orphans, homeless people, and the elderly. They'll get 60 bucks — compensation he feels is well worth the risk of their skin potentially peeling off, death due to an artificial intelligence guide becoming sentient, or worse.

None of this is real, of course — Johnson is the villain of the popular video game Portal — but the makeshift ethical review board that evaluated his study was. At a Public Responsibility in Medicine and Research conference conducted online last month, attendees of the session "Mad Science on Trial: The Real Ethical Problems With Fictional Scientists" had some serious concerns with Johnson's research. Would the participants' data be secure and anonymized? Would the team of henchmen include some henchwomen as well? And, most importantly, would there be cake?

The moderators of the session didn't just target Johnson. They asked their audience of 450 virtual attendees to evaluate other fictional mad scientists as well, voting on whether an institutional review board (IRB) — a body of experts that a research institution uses to evaluate whether proposals are ethically sound — should approve their protocols.
Another example used was the scientist in the first-person shooter game Halo who proposed surgically enhancing 6-year-old children with armor, neural interfaces, and other technology to give them combat advantages against a theoretical alien attack.

Science interviewed two of the panelists, one noting "this format is good for making the Instituational Review Board ethics world fun and doing it in a way that kind of stretches people's minds."

Thanks to Slashdot reader sciencehabit for submitting the article.

The Los Angeles Times explores an interesting exercise in prognisticating about the future. In 2018 robotics entrepreneur Rodney Brooks made a list of predictions about hot tech topics like robots, space travel, and AI, "and promised to review them every year until Jan. 1, 2050, when, if he's still alive, he will have just turned 95." His goal was to "inject some reality into what I saw as irrational exuberance." Each prediction carried a time frame — something would either have occurred by a given date, or no earlier than a given date, or "not in my lifetime." Brooks published his fifth annual scorecard on New Year's Day. The majority of his predictions have been spot-on, though this time around he confessed to thinking that he, too, had allowed hype to make him too optimistic about some developments....

People have been "trained by Moore's Law" to expect technologies to continue improving at ever-faster rates, Brooks told me.... That tempts people, even experts, to underestimate how difficult it may be to reach a chosen goal, whether self-aware robots or living on Mars. "They don't understand how hard it might have been to get there," he told me, "so they assume that it will keep getting better and better...."

This year, 14 of his original predictions are deemed accurate, whether because they happened within the time frame he projected or failed to happen before the deadline he set. Among them are driverless package delivery services in a major U.S. city, which he predicted wouldn't happen before 2023; it hasn't happened yet. On space travel and space tourism, he predicted a suborbital launch of humans by a private company would happen by 2018; Virgin Atlantic beat the deadline with such a flight on Dec. 13, 2018. He conjectured that space flights with a few handfuls of paying customers wouldn't happen before 2020; regular flights at a rate of more than once a week not before 2022 (though perhaps by 2026); and the transport of two paying customers around the moon no earlier than 2020.

All those deadlines have passed, making the predictions accurate. Only three flights with paying customers happened in 2022, showing there's "a long way to go to get to sub-weekly flights," Brooks observes.
"My current belief is that things will go, overall, even slower than I thought five years ago," Brooks writes. "That is not to say that there has not been great progress in all three fields, but it has not been as overwhelmingly inevitable as the tech zeitgeist thought on January 1st, 2018." (For example, Brooks writes that self-driving taxis are "decades away from profitability".)

And this year he's also graced us with new predictions responding to current hype:

• "The metaverse ain't going anywhere, despite the tens of billions of dollars poured in. If anything like the metaverse succeeds it will from a new small player, a small team, that is not yoked down by an existing behemoth."

• " Crypto, as in all the currencies out there now, are going to fade away and lose their remaining value. Crypto may rise again but it needs a new set of algorithms and capability for scaling. The most likely path is that existing national currencies will morph into crypto currency as contactless payment become common in more and more countries. It may lead to one of the existing national currencies becoming much more accessible world wide.

• "No car company is going to produce a humanoid robot that will change manufacturing at all. Dexterity is a long way off, and innovations in manufacturing will take very different functional and process forms, perhaps hardly seeming at all like a robot from popular imagination."

• " Large language models may find a niche, but they are not the foundation for generally intelligent systems. Their novelty will wear off as people try to build real scalable systems with them and find it very difficult to deliver on the hype."

• "There will be human drivers on our roads for decades to come."

And Brooks had this to say about ChatGPT. "People are making the same mistake that they have made again and again and again, completely misjudging some new AI demo as the sign that everything in the world has changed. It hasn't."

CNN reports: Edwin "Buzz" Aldrin, who became the second person to ever set foot on the moon in 1969, following crewmate Neil Armstrong, married his "longtime love" on his 93rd birthday on Friday.

The former astronaut announced his nuptials on Twitter.... "We were joined in holy matrimony in a small private ceremony in Los Angeles & are as excited as eloping teenagers...." Aldin also thanked fans for their birthday wishes in another Friday tweet. "It means a lot and I hope to continue serving a greater cause for many more revolutions around the sun," he wrote.

NASA's plans for a presence on the moon "will allow the program to practice how to live in space sustainably," writes the Washington Post. "It will allow scientists to tap into the moon's considerable scientific value to learn more about how Earth was formed. And perhaps, it would also serve as a steppingstone to Mars and other deep-space destinations years in the future."

First, unlike in the 1960s — we now know that the moon has water. Water is not only key to sustaining human life, but its component parts — hydrogen and oxygen — can be used as rocket propellant, making the moon a gas station in space. That could be critical for long-duration missions, allowing spacecraft to refuel on the moon instead of lugging all the fuel from Earth. And since the moon's gravity is one-sixth of Earth's, it is a relatively easy springboard to other points of the solar system.
NASA is also considering building a nuclear reactor on the moon: It's one of several initiatives NASA has begun under its Artemis program, designed to help astronauts stay for extended periods when they'll need power, transportation and the ability to use the moon's resources.... The effort is still very much in its nascent stages, and the funding NASA would need for the long term has not materialized in full.... A sustainable presence, despite the rosy predictions coming from the top echelons of the agency, is still years away, and the technical challenges are immense.

But NASA has begun developing the technologies that would be needed to sustain astronauts on the surface for extended periods. In June of last year, the agency and the Energy Department awarded contracts, worth $5 million each, to three companies to develop nuclear power systems that could be ready to launch by the end of the decade for a test on the moon. The systems would generate 40 kilowatts of power, enough energy to power six or seven American households, and last about 10 years....

NASA is also looking to build solar farms, using arrays that point vertically and catch the angle of the sun over the horizon. And it's exploring how best to exploit what are called "in situ resources" — meaning those that already exist, such as the regolith.
The article even broaches the idea of "a lunar economy that would help sustain a permanent presence."

South Korea's Korea Pathfinder Lunar Orbiter spacecraft, known as Danuri, has sent back some high-resolution images from the moon. The Korea Aerospace Research Institute shared the views on Twitter this week. CNET reports: The first two come from late December and show the cratered landscape of the moon with Earth peeking above the horizon. The images are reminiscent of Earthrise views seen from NASA's Apollo and Artemis missions. KARI shared a second set of Earth images snapped during the new year.

Walt Cunningham, one of the early Apollo astronauts, died Tuesday after complications from a fall. He was 90. NPR reports: Walt Cunningham flew in space just one time. His flight in 1968 was an important -- and often forgotten one -- for the lunar program. Cunningham was the lunar module pilot of the first manned Apollo mission that went to space. Apollo 7's 11-day trip around the Earth was a key stepping stone to NASA's march to the moon. "The real accomplishment, of course, was the first manned landing on the moon," Cunningham told NPR in 2016. "But that was the fifth of what I've always described as five giant steps. The first one was the Apollo 7 mission, of course. Complete test of the Apollo spacecraft."

The launch came after a difficult time for NASA. Just 21 months before, a fire on the launchpad killed three astronauts during a test of Apollo 1. In the interim, NASA changed many procedures and the command module underwent a series of safety improvements. Cunningham said in 2016 that if Apollo 7 had not gone well, the U.S. wouldn't have landed on the moon before the end of the 1960s. "Historically, what the public doesn't realize," he said, "It is still the longest, most ambitious, most successful first test flight of any new flying machine ever."

"There were so many things that had to be tested," he recalled. During the flight, the crew test-fired the engine that would place Apollo into and out of lunar orbit, simulated docking maneuvers and did the first-ever live television broadcast from an American spacecraft. "It was hard to imagine that we could get through all those things [in an 11-day mission] without something going wrong and saying, 'hey you need to gotta come home," Cunningham said. The mission was deemed a success but it was the last time these astronauts would fly in space. There was tension between Apollo 7's commander, Wally Schirra, and mission control. As the flight dragged on, Schirra caught a cold and so did astronaut Donn Eisele and the crew's squabbles worsened with ground controllers. Despite that, Cunningham said, "As I look back on it, it was a job, a challenge, and a task that in the end was very well done."

"Last week at the 2022 American Geophysical Union (AGU) Fall Meeting, planetary scientists and astronomers discussed how new machine-learning techniques are changing the way we learn about our solar system," reports Space.com, "from planning for future mission landings on Jupiter's icy moon Europa to identifying volcanoes on tiny Mercury...." For many tasks in astronomy, it can take humans months, years or even decades of effort to sift through all the necessary data... "You can find up to 10,000, hundreds of thousands of boulders, and it's very time consuming," Nils Prieur, a planetary scientist at Stanford University in California said during his talk at AGU. Prieur's new machine-learning algorithm can detect boulders across the whole moon in only 30 minutes. It's important to know where these large chunks of rock are to make sure new missions can land safely at their destinations. Boulders are also useful for geology, providing clues to how impacts break up the rocks around them to create craters.

Computers can identify a number of other planetary phenomena, too: explosive volcanoes on Mercury, vortexes in Jupiter's thick atmosphere and craters on the moon, to name a few. During the conference, planetary scientist Ethan Duncan, from NASA's Goddard Space Flight Center in Maryland, demonstrated how machine learning can identify not chunks of rock, but chunks of ice on Jupiter's icy moon Europa. The so-called chaos terrain is a messy-looking swath of Europa's surface, with bright ice chunks strewn about a darker background. With its underground ocean, Europa is a prime target for astronomers interested in alien life, and mapping these ice chunks will be key to planning future missions.

Upcoming missions could also incorporate artificial intelligence as part of the team, using this tech to empower probes to make real-time responses to hazards and even land autonomously. Landing is a notorious challenge for spacecraft, and always one of the most dangerous times of a mission.

Reason.com notes NASA's successful completion of its Artemis I mission, calling it "part of NASA's ambitious program to bring American astronauts back to the moon for the first time in half a century. And then on to Mars."

But then they ask if the project is worth the money, with the transportation policy director at the libertarian "Reason Foundation" think tank, Robert W. Poole, arguing instead that NASA "isn't particularly interested in cost savings, and its decision making is overly driven by politics." NASA would have been better off replacing the costly and dated Space Launch System used in the Artemis program. But it didn't. This probably has a lot to do with the fact that it was largely constructed and engineered in Alabama, the home state of Senate Appropriations Committee Chair Richard Shelby, who has a history of strong-arming NASA to preserve jobs for his constituents.
Long-time Slashdot reader SonicSpike shared the article, which ultimately asks whether it'd be faster and cheaper to just rely on private companies: In 2009, the private sector saw one of its biggest champions ascend to become the number two person at NASA. Lori Garver pushed to scrap the Constellation program as a way to entice the private sector to fill in the gaps. She also spearheaded the Commercial Crew Program, which continues to employ commercial contractors to ferry astronauts to the International Space Station. Today, companies like Elon Musk's SpaceX are launching rockets at a faster pace and for a fraction of what NASA spends. In 2022, the company successfully launched 61 rockets, each with a price tag between $100 million and 150 million.

Private companies already design and lease NASA much of its hardware. Poole says there's no reason NASA can't take it a step further and just use the SpaceX starship to cover the entire journey from Earth to the moon and eventually to Mars. "If the current NASA plan goes ahead to have the SpaceX Starship actually deliver the astronauts from the lunar outpost orbit to the surface of the moon and bring them back, that would be an even more dramatic refutation of the idea that only NASA should be doing space transportation," he says.

Poole says that instead of flying its own missions, NASA should play a more limited and supportive role. "The future NASA role that makes the most sense is research and development to advance science," he says.
But for a contrary opinion, Slashdot reader youn counters that "You can bash NASA all you want but a big reason the private sector is where it is at is because it funded research 12 years ago." They share a CNET article noting the $6 billion NASA budgeted over five years "to kick-start development of a new commercial manned spaceflight capability."

And Slashdot reader sg_oneill argues that "Its gonna be a century before we're really colonizing the moon and/or Mars... because we have a lot of science to do first. How do you do a civilization with zero energy inputs from the rest of humanity? How do we deal with radiation? How do bodies work in low G? (Mars is about 1/3 the gravbity of earth). This needs science, and to get science we need NASA, even if private enterprise is building the rockets."

The New York Times cites predictions from American's Defense Department that China could surpass U.S. space capabilities as soon as 2045. "I think it's entirely possible they could catch up and surpass us, absolutely," said the staff director of the United States Space Force. "The progress they've made has been stunning — stunningly fast."

But in a new article this week, the newspaper notes that China recenty sent space probes to the moon and to Mars — and invited foreign media to the launch of its space station in November — and looks back over decades of development: Thirty years ago, the Chinese government initiated a secret plan for its space program, including a key goal of building a space station by 2020. At the time, the country was 11 years from sending its first astronaut into space, and its space efforts were going through a rough patch: Chinese rockets failed in 1991, 1992, 1995 and twice in 1996. The worst failure, in 1996, was a rocket that tipped to the side, flew in the wrong direction and exploded 22 seconds after launch, showering a Chinese village with falling wreckage and flaming fuel that killed or injured at least 63 people.

While grand spaceflight plans of some nations have ended up many years behind schedule, China completed the assembly in orbit of its Tiangong space station in late October, only 22 months later than planned. And on Nov. 29, the Shenzhou 15 mission blasted off from China's Jiuquan Satellite Launch Center deep in the Gobi Desert and took three astronauts to the space station to begin permanent occupancy of the outpost.
The article notes that the U.S. Congress "ended up banning American space agencies in 2011 from spending any money to cooperate in space with China, except in limited circumstances."

But today Zhou Jianping, chief designer of China's crewed space program, asserts that "within a few years, we will be able to achieve the reuse of re-entry capsules for our new generation spaceships." Sending a person to Mars is an even bigger prize for China. It has placed an emphasis on shortening the duration of such a trip, perhaps with nuclear propulsion instead of conventional rocket engines. Officials are also determined that any journey will be a round-trip from which all astronauts return alive and in good health.... With nuclear propulsion, the trip could be trimmed to 500 days, Mr. Zhou said, without predicting whether China would adopt that approach.

Splashdown successful. The announcer on NASA's livestream called it a "text-book entry" for "America's new ticket to ride -- to the moon and beyond."

After flying over 239,000 miles — and 80 miles over the surface of the moon — NASA's uncrewed "Orion" capsule has returned from its 25-and-a-half day test flight in space.

NASA is still streaming its coverage. And CNN had emphasized that "This final step will be among the most important and dangerous legs of the mission." "We're not out of the woods yet. The next big test is the heat shield," NASA Administrator Bill Nelson told CNN in a phone interview Thursday, referring to the barrier designed to protect the Orion capsule from the excruciating physics of reentering the Earth's atmosphere. The spacecraft will be traveling about 32 times the speed of sound (24,850 miles per hour or nearly 40,000 kilometers per hour) as it hits the air — so fast that compression waves will cause the outside of the vehicle to heat to about 5,000 degrees Fahrenheit (2,760 degrees Celsius)....

As the capsule reaches around 200,000 feet (61,000 meters) above the Earth's surface, it will perform a roll maneuver that will briefly send the capsule back upward — sort of like skipping a rock across the surface of a lake.... "By dividing the heat and force of reentry into two events, skip entry also offers benefits like lessening the g-forces astronauts are subject to," said Joe Bomba, Lockheed Martin's Orion aerosciences aerothermal lead, in a statement....

As it embarks on its final descent, the capsule will slow down drastically, shedding thousands of miles per hour in speed until its parachutes deploy. By the time it splashes down, Orion will be traveling 20 miles per hour (32 kilometers per hour). While there are no astronauts on this test mission — just a few mannequins equipped to gather data and a Snoopy doll — Nelson, the NASA chief, has stressed the importance of demonstrating that the capsule can make a safe return.

A Japanese billionaire picked his crewmates for the first-ever artist-centered mission. Space.com reports: Yusaku Maezawa, who made his fortune as an online fashion retailer, announced the eight people who would be flying with him on the dearMoon mission, which aims to use a SpaceX Starship to fly around the moon as soon as next year. "I hope each and every one will recognize the responsibility that comes with leaving the Earth, travelling to the moon and back," Maezawa says in the video in Japanese, with a translation provided in-video.

Riding along with Maezawa will be:
- Steve Aoki, D.J., producer and electronic dance music artist with several Billboard-charting studio albums;
- Tim Dodd, YouTube creator of the "Everyday Astronaut" channel (Dodd has interviewed SpaceX founder Elon Musk multiple times on camera);
- Yemi A.D., artist and choreographer known for his work with JAD Dance Company and with Ye (formerly Kanye West);
- Karim Iliya, photographer whose publications include National Geographic Magazine;
- Rhiannon Adam, a photographer who has been supported by the BBC/Royal Geographical Society and won multiple awards, according to their website;
- Brendan Hall, filmmaker on projects such as the two-hour documentary "Blood Sugar Rising" about diabetes in the United States, according to the Internet Movie Database;
- Dev Joshi, an "Indian television actor known for portraying the role of Baal Veer in Sony Sab's Baal Veer and Baalveer Returns," according to the Internet Movie Database;
- T.O.P., a South Korean rapper known as the lead for the boy band Big Bang;
- Two backup members: dancer Miyu, and snowboarder Kaitlyn Farrington.

Each member of the dearMoon crew was briefly quoted in a video from the dearMoon YouTube channel, and the announcement was confirmed on Dodd's and Maezawa's Twitter feeds.

sciencehabit shares a report from Science Magazine: Fifty years ago today, astronauts aboard Apollo 17, NASA's last crewed mission to the Moon, took an iconic photograph of our planet. The image became known as the Blue Marble -- the first fully illuminated picture of Earth, in color, taken by a person. Now, scientists have re-created that image during a test run of a cutting-edge digital climate model. The model can simulate climatic phenomena, such as storms and ocean eddies, at 1-kilometer resolution, as much as 100 times sharper than typical global simulations.

To re-create the swirling winds of the Blue Marble -- including a cyclone over the Indian Ocean -- the researchers fed weather records from 1972 into the supercomputer-powered software. The resulting world captured distinctive features of the region, such as upwelling waters off the coast of Namibia and long, reedlike cloud coverage. Experts say the stunt highlights the growing sophistication of high-resolution climate models. Those are expected to form the core of the European Union's Destination Earth project, which aims to create a 'digital twin' of Earth to better forecast extreme weather and guide preparation plans.

IEEE Spectrum reports: In October, a startup called Jidu Automotive, backed by Chinese AI giant Baidu and Chinese carmaker Geely, officially released an autonomous electric car, the Robo-01 Lunar Edition. In 2023, the car will go on sale.

At roughly US $55,000, the Robo-01 Lunar Edition is a limited edition, cobranded with China's Lunar Exploration Project. It has two lidars, a 5-millimeter-range radar, 12 ultrasonic sensors, and 12 high-definition cameras. It is the first vehicle to offer on-board, AI-assisted voice recognition, with voice response speeds within 700 milliseconds, thanks to the Qualcomm Snapdragon 8295 chip. "It's a car, and, even more so, a robot," said Jidu CEO Joe Xia, during the live-streamed unveiling of the car (as translated from the Mandarin by CNBC). He added that it "can become the standard for self-driving cars."

But just how autonomous the car is remains to be seen: In January 2022 Baidu and Jidu said the car would have Level 4 autonomous driving capability, which does not require a human driver to control the vehicle. But the press release at the car's launch made no mention of Level 4, saying only that the car offered "high-level autonomous driving...." In September 2022, Baidu cofounder and CEO Robin Li noted that lower levels of autonomy shield car companies from liability in the event of a crash, because the driver is expected to be in control. With Level 4, the manufacturer of the car or the operator of the "robotaxi" service using the car would be to blame....

Regardless of the car's official autonomy designation, Baidu has billed its self-driving package, Apollo, as having Level 4 capabilities. That includes what the company calls a Point-to-Point Autopilot, designed to handle highway, city street, and parking scenarios. Jidu is conducting further tests in Beijing and Shanghai to ensure that its Point-to-Point Autopilot will cover all major cities in China. Chinese regulations do allow Level 4 in robotaxis that operate within designated geofenced areas, and Apollo has already shown what it can do in Baidu's Apollo Go robotaxis, which have delivered more than 1 million rides in at least 10 cities across China.

Baidu recently unveiled its latest autonomous robotaxi, the Level-4 Apollo RT6, which has a detachable steering wheel. The absence of a steering wheel is a statement in itself, and it frees up cabin space for extra seating or even desktops, gaming consoles, and vending machines.
Meanwhile CNBC notes that the four-seat Robo-01 "has replaced the dashboard with a long screen extending across the front of the car and removed cockpit buttons — since the driver can use voice control instead, said Jidu CEO Joe Xia.

"Theoretically, the half-moon of a steering wheel can fold up, paving the way for a cockpit seat with no window obstructions, once full self-driving is allowed on China's roads...." Xia claimed Jidu "can become the standard for self-driving cars...."

Co-investor Geely has pushed into the electric car industry with its own vehicles, and announced in November a multi-year plan to build up the software component of the cars. The automaker said it aimed to commercialize full self-driving under specific conditions, called "Level Four" autonomous driving in a classification system, by 2025.

Tall as a 20-story building, a rocket carrying the Shenzhou 15 mission roared into the night sky of the Gobi Desert on Tuesday, carrying three astronauts toward a rendezvous with China's just-completed space station. From a report: The rocket launch was a split-screen event for China, the latest in a long series of technological achievements for the country, even as many of its citizens have been angrily lashing out in the streets against stringent pandemic controls.The air shook as the huge white rocket leaped into a starry, bitterly cold night sky shortly before the setting of a waxing crescent moon. The expedition to the new space station is a milestone for China's rapidly advancing space program. It is the first time a team of three astronauts already aboard the Tiangong outpost will be met by a crew arriving from Earth. The Chinese space station will now be continuously occupied, like the International Space Station, another marker laid down by China in its race to catch up with the United States and surpass it as the dominant power in space.

With a sustained presence in low-Earth orbit aboard Tiangong, Chinese space officials are preparing to put astronauts on the moon, which NASA also intends to revisit before the end of the decade as part of its Artemis program. "It will not take a long time; we can achieve the goal of manned moon landing," Zhou Jianping, chief designer of China's crewed space program, said in an interview at the launch center. China has been developing a lunar lander, he added, without giving a date when it might be used. The launch of Shenzhou 15 comes less than two weeks after NASA finally launched its Artemis I mission following many delays. That flight has put its uncrewed Orion capsule into orbit around the moon.