Slashdot reader Tangential shares what he describes as "an interesting article on Gizmodo discussing how we could easily contaminate other planets/moons as we explore them."

"Based on our recently demonstrated vulnerability to locally evolved bacteria and viruses, what will other worlds's pathogens do to us (and what will ours do to them?) What I also find interesting is what a small percentage of SciFi actually addresses this."

From Gizmodo's article: The year is 2034. Humans have sent a probe to Jupiter's moon Europa to drill through the icy surface and photograph the ocean beneath. In the few hours before it stops functioning, the probe returns images of shapes that could be some form of life. Scientists quickly organize a followup mission that will collect samples of that spot and bring them back to Earth. But, unknown to anyone, the first probe wasn't sterile — it carried a hardy bacteria that had survived even the mission's clean rooms. By the time the samples finally reach Earth years later, they're dominated by this bacteria, which has happily set up shop in Europa's dark, salty waters. Just like that, our first opportunity to study a truly alien ecosystem has been destroyed.

This is a nightmare scenario for NASA and other space agencies, and it's one they've worked intensely to avoid with every mission to another orb. But some researchers from a lesser-known branch of ecology argue that even the current strict standards aren't rigorous enough, and as more ambitious missions to other planets and moons get ready to launch, the risk of interplanetary contamination becomes more dire. They say we need to better plan for "forward contamination," in which our technology disseminates Earth microbes, as well as "back contamination," in which life from elsewhere hitches a ride to Earth.

In fact, we already have a playbook to lean on: the discipline of invasion science, the study of how species on our planet invade each other's ecosystems. "What I would say is that, given that there are now concrete plans in place to explore new areas that could have extant life — these pose a new set of risks that were not in play before," Anthony Ricciardi, a professor of invasion ecology and aquatic ecosystems at McGill University, told Gizmodo. "Invasion science has been applied to biosecurity at national and international levels. My colleagues and I believe that it could similarly guide biosecurity at the planetary or interplanetary scales."

Because of the groundbreaking technological advances of recent years, our ability to explore other worlds — from asteroids to planets to ocean moons — is expanding, and so are the risks that come with that. NASA plans to bring bits of Mars to Earth in the early 2030s, and missions to Titan and Europa, which could very well host life, are set to launch this decade.... Although the 2034 Europa tale is invented, there's plenty of precedent for it. We've likely accidentally brought drug-resistant bacteria into the Antarctic ecosystem already, infecting seabirds and seals.

Our lack of foresight and carelessness is driving mass extinctions on Earth — are we willing to do the same thing to the next inhabited world we touch?

While billionaires are battling it out in a race to colonise the moon, mere stratospherically rich mortals on Earth were able to grab a small slice of space rock for themselves on Wednesday at Christie's annual sale of rare and unusual meteorites. From a report: Star-gazers and meteorite enthusiasts bid frantically for fragments of the "oldest matter humankind can touch" -- as the auction house put it -- while other objects such as a comet-cracked kennel from Costa Rica sold for tens of thousands of dollars. A 15g fragment of the Winchcombe meteorite, which briefly became Britain's most coveted rock after the bright fireball was seen blazing across the sky over the Cotswold town last year, sold for $30,200, while a smaller 1.7g fragment fetched $12,600.

According to the Christie's catalogue of the 66-lot Deep Impact: Martian, Lunar and other Rare Meteorites" sale, only 602g of Winchcombe was ever found -- with 90% of the material now housed in the UK's national collection, curated by London's Natural History Museum. Among the more usual items for sale was a dog house hit by a meteorite which crashed through the tin roof in April 2019 in Aguas Zarcas, Costa Rica. But while it was expected to sell for as much as $300,000, after all it boasted a seven-inch hole which "marks where the meteorite punctured the roof," it finally sold for $44,100.

A distant white dwarf is surrounded by space rocks marching in perfect time. This observation offers hints of what may be the first planet we have detected in the habitable zone of one of these stellar corpses, suggesting that they might be just as good for life as bigger, younger stars. From a report: "A lot of people think of a white dwarf as a dead system or a dead end, but this tells us that there is a lot of stuff going on around white dwarfs," says Jay Farihi at University College London. He and his colleagues spotted these hints while observing a star called WD 1054-226, which lies about 118 light years away, using several powerful telescopes. They found that something appeared to be regularly passing in front of the star, causing dips in its light. The biggest dip happened every 23.1 minutes, in a pattern that repeated every 25 hours.The measurements indicate, the report says, that the star is surrounded by a ring of 65 comet-sized or moon-sized objects, remarkably evenly spaced in their orbits.

schwit1 shares a report from Politico: Starship is threatening NASA's moon contractors, which are watching its progress with a mix of awe and horror. "They are shitting the bed," said a top Washington space lobbyist who works for SpaceX's competitors and asked for anonymity to avoid upsetting his clients. NASA and its major industry partners are simultaneously scrambling to complete their own moon vehicles: the Space Launch System mega-rocket and companion Orion capsule. But the program is billions of dollars over budget and years behind schedule -- and, many would argue, generations behind SpaceX in innovation.

The space agency's first three Artemis moon missions over the next three years -- including a human landing planned for 2025 -- are all set to travel aboard the SLS rocket and Orion capsule, which are being built by Boeing, Lockheed Martin, Northrop Grumman, Aerojet Rocketdyne and numerous other suppliers and engineering services firms. But with the SLS' first flight this year further delayed at least until late spring, concerns are growing that even if it succeeds, the system, at an estimated $2 billion per launch, could prove too costly for the multiple journeys to the moon that NASA will need to build a permanent human presence on the lunar surface.

That makes Starship, which conducted a successful flight to the edge of space last year, especially threatening to the contractors and their allies in Congress. As Starship progresses, it will further eclipse the argument for sticking with SLS, according to Rand Simberg, an aerospace engineer and space consultant. "Once the new system's reliability is demonstrated with a large number of flights, which could happen in a matter of months, it will obsolesce all existing launch systems," he said. "If SLS is not going to fly more than once every couple of years, it's just not going to be a significant player in the future in space, particularly when Starship is flown," he added.

An anonymous reader quotes a report from the New York Times: On March 4, a human-made piece of rocket detritus will slam into the moon. But it turns out that it is not, as was previously stated in a number of reports, including by The New York Times, Elon Musk's SpaceX that will be responsible for making a crater on the lunar surface. Instead, the cause is likely to be a piece of a rocket launched by China's space agency.

Last month, Bill Gray, developer of Project Pluto, a suite of astronomical software used to calculate the orbits of asteroids and comets, announced that the upper stage of a SpaceX Falcon 9 rocket was on a trajectory that would intersect with the path of the moon. [...] But an email on Saturday from Jon Giorgini, an engineer at NASA's Jet Propulsion Laboratory in California, changed the story. Mr. Giorgini runs Horizons, an online database that can generate locations and orbits for the almost 1.2 million objects in the solar system, including about 200 spacecraft. A user of Horizons asked Mr. Giorgini how certain it was that the object was part of the DSCOVR rocket. "That prompted me to look into the case," Mr. Giorgini said.

Part of a rocket is expected to crash into the far side of the moon on March 4. Initially thought to be a SpaceX rocket stage, the object may actually be part of a Long March 3C rocket [that launched China's Chang'e-5 T1 spacecraft on Oct. 23, 2014]. He found that the orbit was incompatible with the trajectory that DSCOVR took, and contacted Mr. Gray. [...] Mr. Gray now realizes that his mistake was thinking that DSCOVR was launched on a trajectory toward the moon and using its gravity to swing the spacecraft to its final destination about a million miles from Earth where the spacecraft provides warning of incoming solar storms. But, as Mr. Giorgini pointed out, DSCOVR was actually launched on a direct path that did not go past the moon. "I really wish that I had reviewed that" before putting out his January announcement, Mr. Gray said. "But yeah, once Jon Giorgini pointed it out, it became pretty clear that I had really gotten it wrong." There is still no chance of the rocket missing the moon, the report says.

"As for what happened to that Falcon 9 part, 'we're still trying to figure out where the DSCOVR second stage might be,' Mr. Gray said," according to the Times. "The best guess is that it ended up in orbit around the sun instead of the Earth, and it could still be out there. That would put it out of view for now."

This true story of a hammer, a feather, the Apollo 15 mission, and the answers to humanity's oldest questions about how stuff falls. From a report: Does a falling object move at a constant speed, or does it speed up? If you drop a heavy object and a light one at the same time, which will fall faster? The great thing about these two questions is that you can ask pretty much anyone and they will have an answer -- even if they are actually wrong. The even greater thing is that it's fairly simple to determine the answers experimentally. [...] OK, but what about dropping a rock and feather -- doesn't the rock hit first? Usually, the answer is yes. But let's replace the rock with a hammer and then just take a change of scenery and move the experiment to the moon. This is exactly what happened during the Apollo 15 lunar mission in 1971. Commander David Scott took a hammer and an eagle feather and dropped them onto the lunar regolith. Here's what happened: The feather and the hammer hit the ground at the same time.

Why did it happen? First, it is indeed true that even on the moon there is a greater gravitational force on the hammer than the feather. We can calculate this gravitational force as the product of mass (m in kilograms) and the gravitational field (g in newtons per kilogram). On the surface of the moon, the gravitational field has a value of 1.6 N/kg. If you put this expression in for the net force on a falling object, it looks like this: Fnet = - mg = ma; a = -g. Since both the gravitational force and the acceleration depend on the same mass, it's on both sides of the equation and cancels. That leaves an acceleration of -g. The hammer and the feather fall down with identical motions and hit the ground at the same time.

So, what's different about dropping something on the moon versus on Earth? Yes, there is a different gravitational weight on the moon -- but that's not the issue. It's the lack of air that makes the difference. Remember that Newton's second law is a relationship between the net force and the acceleration. If you drop a feather on the surface of the Earth, there are two forces acting on it. First, there is the downward-pulling gravitational force that is equal to the product of mass and the gravitational field. Second, there is an upward-pushing force due to the interaction with the air, which we often call air drag. This air drag force depends on several things, but the important ones are the object's speed and the size of the object. [...]

XKCD creator Randall Munroe has announced his latest science book: What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions, which will delve into new out-of-the-box questions that Munroe attempts to answer with hard scientific facts and research. From a report: What If? 2 follows 2014's original What If? book -- which itself was borne out of an XKCD spinoff blog -- that saw Munroe examine absurd questions (like whether you could build a jetpack that ran off downward-facing machine guns or if there's enough paint to cover the entire surface of the earth) with rigorous scientific accuracy, accompanied by Munroe's signature stick figure comics. The new volume will continue in What If?'s absurd scientific footsteps, attempting to answer new questions from readers like how you'd ride a fire pole from the moon to Earth, or what would happen if you tried to build a billion-story-high building or solve global warming by having everyone on earth open their freezer doors.

Astronomers said this week that a piece of a Falcon 9 rocket that was launched in February 2015 is currently on a trajectory to collide with the moon in just a few weeks. CBS News reports: The rocket left from Florida's Cape Canaveral and launched NOAA's Deep Space Climate Observatory, a project that allows researchers to maintain real-time data for more accurate space weather alerts and forecasts. According to NOAA, having that data is "critical," as space weather events "have the potential to disrupt nearly every major public infrastructure system on Earth." During that deployment, Falcon 9's second stage, which provides it with a second boost to reach its desired orbit, ran out of fuel to return to Earth, according to meteorologist and Ars Technica space editor Eric Berger. The second stage has been orbiting Earth ever since, and now, according to data gathered by astronomers, it's on track to hit the moon.

Bill Gray, who writes the Project Pluto software that is used by both amateur and professional astronomers, gathered data from those space observers over the past few weeks to predict just when the impact will occur. Based on the information he gathered, there will be a "certain impact" with the far side of the moon on March 4, he said. The rocket stage is currently floating away from Earth and outside of the moon's orbit on a "chaotic" orbit, Gray said, but in the coming days, it's expected to turn around and head back towards Earth. It made a "close lunar flyby" on January 5, but March 4 is when its path and the moon's will cross. Thankfully, there's no cause for concern, says Gray, noting that it's the "first unintentional case" of space junk hitting the moon that he's aware of. It may actually help researchers learn more about the moon's makeup if lunar orbiters are able to observe the crash site.

"If we can tell the [lunar orbiter] folks exactly where the crater is, they'll eventually pass over that spot and be able to see a very fresh impact crater and probably learn something about the geology (well, selenology) of that part of the moon," Gray said.

CNET reports: Saturn has some famous moons, like Enceladus (a plume-spewing moon of mystery) and Titan (the intriguing target of NASA's future Dragonfly mission). But what about dainty Mimas, a moon that's mostly known for its resemblance to the Star Wars Death Star?

Turns out it might be hiding an ocean.

A study published in the journal Icarus lays out evidence that suggests Mimas has liquid deep under its icy surface. "If Mimas has an ocean, it represents a new class of small, 'stealth' ocean worlds with surfaces that do not betray the ocean's existence," said lead author Alyssa Rhoden in a Southwest Research Institute (SwRI) statement on Wednesday. Mimas might look quiet, but NASA's now-defunct Saturn-studying Cassini spacecraft "identified a curious libration, or oscillation, in the moon's rotation, which often points to a geologically active body able to support an internal ocean," SwRI said.

The libration spotted by Cassini suggests Mimas's interior is warm enough for a liquid ocean, but not so warm it compromises the moon's thick shell of ice.

The researchers calculate that ice shell could be up to 19 miles (31 kilometers) thick. There's a nifty acronym for interior water ocean worlds: IWOWs. Known IWOWs include Enceladus, Titan and Jupiter's fascinating moon Europa. These places are particularly interesting because they may be habitable for microbial life.

"If a rock falls on Mars, and no one is there to see it, does it leave a trace?" jokes the New York Times, answering "Yes, and it's a beautiful herringbone-like pattern, new research reveals." Scientists have now spotted thousands of tracks on the red planet created by tumbling boulders. Delicate chevron-shaped piles of Martian dust and sand frame the tracks, the team showed, and most fade over the course of a few years.

Rockfalls have been spotted elsewhere in the solar system, including on the moon and even a comet. But a big open question is the timing of these processes on other worlds — are they ongoing or did they predominantly occur in the past?A study of these ephemeral features on Mars, published last month in Geophysical Research Letters, says that such boulder tracks can be used to pinpoint recent seismic activity on the red planet. This new evidence that Mars is a dynamic world runs contrary to the notion that all of the planet's exciting geology happened much earlier, s aid Ingrid Daubar, a planetary scientist at Brown University who was not involved in the study...

To arrive at this finding, Vijayan, a planetary scientist at the Physical Research Laboratory in Ahmadabad, India, who uses a single name, and his colleagues pored over thousands of images of Mars' equatorial region. The imagery was captured from 2006 through 2020 by the High Resolution Imaging Science Experiment (HiRISE) camera onboard NASA's Mars Reconnaissance Orbiter and revealed details as small as 10 inches across. "We can discriminate individual boulders," Vijayan said. The team manually searched for chain-like features — a telltale signature of a rock careening down an incline — on the sloped walls of impact craters. Vijayan and his collaborators spotted more than 4,500 such boulder tracks, the longest of which stretched more than a mile and a half...

Roughly one-third of the tracks the researchers studied were absent in early images, meaning that they must have formed since 2006... The researchers suggest that winds continuously sweeping over the surface of Mars redistribute dust and sand and erase the ejecta. Because boulder fall ejecta fades so rapidly, seeing it implies that a boulder was dislodged recently, the team suggest. And a common cause of rockfalls, on Earth and elsewhere, is seismic activity.... Since 2019, hundreds of marsquakes have been detected by NASA's InSight lander, and two of the largest occurred last year in the Cerberus Fossae region.
Today the Mars lander InSight is back in operation after a two-week break to avoid dust storms, while dust storms also delayed the 19th flight of NASA's Ingenuity helicopter.

And elsewhere on Mars, the Perserverance rover successfully dislodged two pebbles stuck in its sample-collecting apparatus.

fahrbot-bot shares a report from Ars Technica: Space isn't easy on humans. Some aspects are avoidable -- the vacuum, of course, and the cold, as well as some of the radiation. Astronauts can also lose bone density, thanks to a lack of gravity. NASA has even created a fun acronym for the issues: RIDGE, which stands for space radiation, isolation and confinement, distance from Earth, gravity fields, and hostile and closed environments. New research adds to the worries by describing how being in space destroys your blood. Or rather, something about space -- and we don't know what just yet -- causes the human body to perform hemolysis at a higher rate than back on Earth.

This phenomenon, called space anemia, has been well-studied. It's part of a suite of problems that astronauts face when they come back to terra firma, which is how Guy Trudel -- one of the paper's authors and a specialist in physical medicine and rehabilitation at The Ottawa Hospital -- got involved. "[W]hen the astronauts return from space, they are very much like the patients we admit in rehab," he told Ars. Space anemia had been viewed as an adaptation to shifting fluids in the astronauts' upper bodies when they first arrive in space. They rapidly lose 10 percent of the liquid in their blood vessels, and it was expected that their bodies destroyed a matching 10 percent of red blood cells to get things back into balance. People also suspected that things went back to normal after 10 days. Trudel and his team found, however, that the hemolysis was a primary response to being in space. "Our results were a bit of a surprise," he said. [...]

Trudel's team isn't sure exactly why being in space would cause the human body to destroy blood cells at this faster rate. There are some potential culprits, however. Hemolysis can happen in four different parts of the body: the bone marrow (where red blood cells are made), the blood vessels, the liver, or the spleen. From this list, Trudel suspects that the bone marrow or the spleen are the most likely problem areas, and his team has plans to investigate the issue further in the future. "What causes the anemia is the hemolysis, but what causes the hemolysis is the next step," he said. It's also uncertain how long a person in space can continue to destroy 54 percent more red blood cells than their Earth-bound kin. "We don't have data beyond six months. There's a knowledge gap for longer missions, for one-year missions, or missions to the Moon or Mars or other bodies," he said.

Astronomers say they have found a second plausible candidate for a moon beyond our solar system, an exomoon, orbiting a world nearly 6,000 light-years from Earth. Scientific American reports: Called Kepler-1708 b-i, the moon appears to be a gas-dominated object, slightly smaller than Neptune, orbiting a Jupiter-sized planet around a sunlike star -- an unusual but not wholly unprecedented planet-moon configuration. The findings appear in Nature Astronomy. Confirming or refuting the result may not be immediately possible, but given the expected abundance of moons in our galaxy and beyond, it could further herald the tentative beginnings of an exciting new era of extrasolar astronomy -- one focused not on alien planets but on the natural satellites that orbit them and the possibilities of life therein.

Kepler-1708 b-i's existence was first hinted at in 2018, during an examination of archival data by David Kipping of Columbia University, one of the discoverers of Kepler-1625 b-i, and his colleagues. The team analyzed transit data from NASA's Kepler space telescope of 70 so-called cool giants -- gas giants, such as Jupiter and Saturn, that orbit relatively far from their stars, with years consisting of more than 400 Earth days. The team looked for signs of transiting exomoons orbiting these worlds, seeking additional dips in light from any shadowy lunar companions. Then the researchers spent the next few years killing their darlings, vetting one potential exomoon candidate after another and finding each better explained by other phenomena -- with a single exception: Kepler-1708 b-i. "It's a moon candidate we can't kill," Kipping says. "For four years we've tried to prove this thing was bogus. It passed every test we can imagine."

The magnitude of the relevant smaller, additional dip in light points to the existence of a moon about 2.6 times the size of Earth. The nature of the transit method means that only the radius of worlds can be directly gleaned, not their mass. But this one's size suggests a gas giant of some sort. "It's probably in the 'mini Neptune' category," Kipping says, referring to a type of world that, despite not existing in our solar system, is present in abundance around other stars. The planet this putative mini Neptune moon orbits, the Jupiter-sized Kepler-1708 b, completes an orbit of its star every 737 days at a distance 1.6 times that between Earth and the sun. Presuming the candidate is genuinely a moon, it would orbit the planet once every 4.6 Earth days, at a distance of more than 740,000 kilometers -- nearly twice the distance our own moon's orbit around Earth. The fact that only this single candidate emerged from the analysis of 70 cool giants could suggest that large gaseous moons are "not super common" in the cosmos [...].

"It's a rock. A small rock," writes Slashdot reader BeerFartMoron. CBS News reports: China has discovered the explanation for the mysterious "hut" its Yutu 2 rover spotted on the moon late last year. As the lunar rover made a closer approach, a log of its activities revealed the object was actually just a rock on a crater rim. The revelation came as the lunar rover drove closer to the formation that was once believed to be as tall as Paris' Arc de Triomphe, according to a post published Friday on "Our Space," a Chinese media channel affiliated with the China National Space Administration. Instead, it was much smaller and had a peculiar shape. Upon a closer view, the rock looked like a "jade rabbit" holding carrots, the post said. "The Moon's surface is 38 million square kilometres of rocks, so it would have been astronomically exceptional for it to be anything else," Space News journalist Andrew Jones wrote on Twitter. "But while small, the jade rabbit/ rock will also be a monumental disappointment to some."

"Alexa, when are we arriving at the moon?" quips GeekWire.

Long-time Slashdot reader theodp writes: This week brought news that Amazon is teaming up with Lockheed Martin and Cisco to put its Alexa voice assistant on NASA's Orion spacecraft for the (uncrewed) Artemis 1 round-the-moon mission....

On the heels of that announcement came news that Amazon Future Engineer (AFE) has partnered with Mobile CSP and the National Science Teaching Association (NSTA) on the Alexa for Astronauts program, which will provide students in grades 4-and-up with live WebEx by Cisco tours from NASA's Johnson Space Center. This program will also provide curriculum — NSTA's Using AI to Monitor Health and Mobile CSP's Alexa in Space — aimed at teaching high school Science and AP Computer Science Principles students "how to program their own Alexa skills that could help astronauts [and 'inexperienced space travelers, such as tourists'] solve problems in space and communities at home" using MIT's App Inventor.

App Inventor, some may recall, was developed at Google to bring programming to the masses only to be suddenly abandoned. App Inventor was later picked up by MIT and — with support from Google and millions in NSF funding — eventually found its way into curriculum developed for the new AP CSP course aimed at mainstreaming AP Computer Science.

"Mirror, mirror...is deployed," NASA tweeted Saturday, confirming that the James Webb telescope "has taken on its final form. For the next ~6 months, the space telescope will cool down, calibrate its instruments, and prepare to #UnfoldTheUniverse."

With a diameter of 21.3 feet, the telescope's mirror is the largest mirror ever launched into space — a joint effort with the European Space Agency and Canadian Space Agency. "Good news keep coming," the ESA tweeted yesterday. " Mike Menzel, NASA Webb Mission Systems Engineer said yesterday in press brief that Webb might have 'quite a bit of fuel margin... Roughly speaking, it's around 20 years of propellant', adding that's still to be determined."

Long-time Slashdot reader cusco writes that "For years naysayers have confidently declared that the numerous automated operations necessary to fully deploy the James Webb Space Telescope were going to guarantee its failure. Today they've been proven wrong."

From NASA.gov: "Today, NASA achieved another engineering milestone decades in the making. While the journey is not complete, I join the Webb team in breathing a little easier and imagining the future breakthroughs bound to inspire the world," said NASA Administrator Bill Nelson. "The James Webb Space Telescope is an unprecedented mission that is on the precipice of seeing the light from the first galaxies and discovering the mysteries of our universe. Each feat already achieved and future accomplishment is a testament to the thousands of innovators who poured their life's passion into this mission...."

The world's largest and most complex space science telescope will now begin moving its 18 primary mirror segments to align the telescope optics. The ground team will command 126 actuators on the backsides of the segments to flex each mirror — an alignment that will take months to complete. Then the team will calibrate the science instruments prior to delivering Webb's first images this summer.

"I am so proud of the team — spanning continents and decades — that delivered this first-of-its kind achievement," said Thomas Zurbuchen, associate administrator for the Science Mission Directorate in NASA Headquarters in Washington. "Webb's successful deployment exemplifies the best of what NASA has to offer: the willingness to attempt bold and challenging things in the name of discoveries still unknown."

Soon, Webb will also undergo a third mid-course correction burn — one of three planned to place the telescope precisely in orbit around the second Lagrange point, commonly known as L2, nearly 1 million miles from Earth. This is Webb's final orbital position, where its sunshield will protect it from light from the Sun, Earth, and Moon that could interfere with observations of infrared light. Webb is designed to peer back over 13.5 billion years to capture infrared light from celestial objects, with much higher resolution than ever before, and to study our own solar system as well as distant worlds.

"The successful completion of all of the Webb Space Telescope's deployments is historic," said Gregory L. Robinson, Webb program director at NASA Headquarters. "This is the first time a NASA-led mission has ever attempted to complete a complex sequence to unfold an observatory in space — a remarkable feat for our team, NASA, and the world."
Saturday the Canadian Space Agency tweeted "Wow.... Congratulations to everyone involved. We can't wait to see what the telescope has in store for the international astronomy community!"

Cryptocurrency enthusiasts who piled into meme coins such as Dogecoin and Shiba Inu amid the long-time industry rallying call of "to the moon" are finding this year's journey back to earth pretty painful. From a report: Dogecoin, Shiba Inu and other tokens associated more with online jokes rather than actual software products have been hit harder than sector originals Bitcoin or Ethereum during the recent retreat from the record price levels reached late last year. Doge is off nearly 80% from its all-time high of 74 cents in May, and Shiba has declined more than 65% since hitting its peak of fractions of a penny in late October, according to data compiled by Messari.

Trading volumes have fallen off, now measured in millions instead of billions. And the jokes that once swayed a legion of mostly retail day traders to buy up coins on a whim come with a hint of sadness. The frenzy started with Doge. A digital token created in 2013 by a pair of software engineers took off as interest in crypto trading spiked and a new crop of retail traders took to social media platforms, using jokes, sarcasm and trolling to gin up their popularity. Tesla Inc. Chief Executive Elon Musk's embrace of the token helped to send it soaring. Doge's popularity inspired the creation of new tokens based on the breed of dog, including Shiba Inu, Baby Shiba Inu and Floki, which is named after Musk's pet.

The Washington Post says that when it comes to making New Year's resolutions, the Smithsonian has a better idea. "What if instead of relying on our own resolutions we asked an AI what it thinks we should do?" Starting this weekend, the "Futures" exhibit both online and at its Arts and Industries Building offers a "Resolutions Generator," an AI that makes suggestions on what commitments we should undertake for 2022.... It sounds like a slightly weird idea, and I'd be lying if I said it didn't turn up some weird results. "Change my name to one of my favorite shapes," it suggests, or "Every Friday for a year I will wear a different hat." And, "Every time I hear bells for a month, I will paint a potato."

Designed by AI researcher-writer Janelle Shane, the generator's odd results are deliberate; she purposely trained the AI (the powerful GPT-3) with some of the wackier resolutions humans have put online, then set its parameters wide. "We wanted the AI to come up with the kind of interesting resolutions we're not thinking of," Shane said. "We wanted whimsy," added Rachel Goslins, the director of the Arts and Industries Building, "with a little bit of real."

Okay, so probably not many people will really "Go into a library, climb up onto a shelf, yell down 'I am a giant giraffe!'" But it's a lot easier than trying to lose those 15 pounds. And this way you end up in a library.

Plus they have a point. The truth is by accessing the collective corpus of human resolutions, AI might conceive of ideas that our pale human pea brains cannot... [T]here are growing piles of evidence that deploying AI that can think faster and even differently will pay dividends in the real world. A Stanford study last month concluded that AI sped up discoveries on coronavirus antiviral drugs by as much as a month, potentially saving lives. Canadian researchers in September found that AI made consistently better choices than doctors in treating behavioral problems. Even a button-down institution like Deloitte has a staffer who has persuasively argued that we should use AI, not humans, to update government regulations.
The exhibit's AI also generated these New Year's resolutions:

• "Treat every dog I meet like a celebrity."

• "Every time I see a mirror I will remember that it is the gateway to another dimension."

The AI researcher behind the project also generated Slashdot headlines back in 2017, using 162,000 headlines from the site's first 20 years. Some of my favorites:

• More Pong Users for Kernel Project

• Red Hat Releases Linux Games And Moon

• Why Open Source Power Man Sues Java

• Microsoft Releases New Months

• Ask Slashdot: Do We Want To Be the Computers?

Last night we asked what books you'd enjoyed reading this year.

Here's how Bill Gates had answered the same question on his personal blog Gates Notes: When I was a kid, I was obsessed with science fiction. Paul Allen and I would spend countless hours discussing Isaac Asimov's original Foundation trilogy. I read every book by Edgar Rice Burroughs and Robert Heinlein. (The Moon Is a Harsh Mistress was a particular favorite.) There was something so thrilling to me about these stories that pushed the limits of what was possible.

As I got older, I started reading a lot more non-fiction. I was still interested in books that explored the implications of innovation, but it felt more important to learn something about our real world along the way. Lately, though, I've found myself drawn back to the kinds of books I would've loved as a kid.

My holiday reading list this year includes two terrific science fiction stories. One takes place nearly 12 light-years away from our sun, and the other is set right here in the United States — but both made me think about how people can use technology to respond to challenges. I've also included a pair of non-fiction books about cutting-edge science and a novel that made me look at one of history's most famous figures in a new light.

I read a lot of great books this year — including John Doerr's latest about climate change — but these were some of my favorites...
Gates' picks include a dystopian science fiction novel by nobel Prize-winning author Kazuo Ishiguro (Klara and the Sun) and Project Hail Mary. ("It requires a leap of faith, but it's got a lot of science in it...") The nonfiction titles included Walter Isaacson's book about CRISPR, The Code Breaker and Jeff Hawkins' A Thousand Brains.

Gates reveals his recommendations in a fanciful video where Christmas-y window displays include icons from his recommended books — including William Shakespeare.

"China has formally approved three missions targeting the south pole of the moon, with the first to launch around 2024..." reports Space.com, "each with different goals and an array of spacecraft." The trio make up the so-called fourth phase for the Chinese lunar exploration program, which most recently landed on the moon last December with a sample-return mission dubbed Chang'e 5. Wu Yanhua, deputy head of the China National Space Administration (CNSA), told China Central Television (CCTV) in a recent interview that the three missions had been approved.

Chang'e 7 will be the first to launch; Wu did not provide a timeline, but previous reporting indicates a hoped-for launch around 2024, with the mission to include an orbiter, a relay satellite, a lander, a rover and a "mini flying craft" designed to seek out evidence of ice at the lunar south pole. The various component spacecraft will carry a range of science instruments including cameras, a radar instrument, an infrared spectrum mineral imager, a thermometer, a seismograph and a water-molecule analyzer; the mission will tackle goals including remote sensing, identifying resources and conducting a comprehensive study of the lunar environment...

Chang'e 8 will launch later this decade and will be a step toward establishing a joint International Lunar Research Station (ILRS) with Russia and potentially other partners. The mission is expected to test technology for using local resources and manufacturing with 3D printing, according to earlier Chinese press statements.... The ILRS plan includes development of a robotic base which can be later expanded to allow astronauts to make long-term stays on the lunar surface in the 2030s.
China had previously scheduled their lunar research station for the year 2035, reports the South China Morning Post. The newspaper cites concerns from Zhang Chongfeng, deputy chief designer of China's manned space programme, that America's space program might ultimately seize common land on the moon. The US government and Nasa have proposed the Artemis Accords to set rules for future lunar activities. Already signed by more than a dozen US allies, the accords allow governments or private companies to protect their facilities or "heritage sites" by setting up safety zones that forbid the entry of others. China and Russia are opposed to the accords because this challenges the existing international protocols including the UN's Moon Agreement, which states that the moon belongs to the entire human race, not a certain party, according to Zhang.

But to effectively counter the US on the moon, China would have to "take some forward-looking measures and deploy them ahead of schedule", he said in a paper published in domestic peer-reviewed journal Aerospace Shanghai in June... Instead of building an orbiting "gateway", China would directly put a nuclear-powered research station on the moon. The unmanned facility would allow visiting Chinese astronauts to stay on the moon for as long as their American peers but only at a fraction of the cost. To counter the US territorial claims, China would also deploy a mobile station. This moon base on wheels would be able to roam freely on the lunar surface for over 1,000km, and the use of artificial intelligence technology would mean astronauts need not be present for its operation.

And, unlike the American programme, which focuses on surface activities, China would pay a great deal of attention to the exploration of caves, which could provide a natural shelter for the construction of permanent settlements.

fahrbot-bot writes: The world is full of beautiful equations, numbers and calculations. From counting beads as toddlers to managing finances as adults, we use math every day. But scientists often go beyond these quotidian forms of counting, to measure, weigh and tally far stranger things in the universe. From the number of bubbles in a typical glass of beer to the weight of all the coronavirus particles circulating in the world, LiveScience notes the 10 weird things scientists calculated in 2021.

1. Number of bubbles in a half-pint glass of beer: up to 2 million bubbles, about twice as many as Champagne.
2. Weight of all SARS-CoV-2 particles: between 0.22 and 22 pounds (0.1 and 10 kilograms).
3. Counted African elephants from space for the first time -- Earth elephants (using satellites and AI) not Space Elephants.
4. Acceleration of a finger snap: maximal rotational velocities of 7,800 deg/s and a maximal rotational acceleration of 1.6 million deg/s squared -- in seven milliseconds, more than 20 times faster than the blink of an eye, which takes more than 150 milliseconds.
5. Calculated pi to 62.8 trillion decimal places.
6. Updated the "friendship paradox" equations.
7. Theoretical number and mass of all Black Holes: about 1% of all ordinary matter (not dark matter) in the universe.
8. How long would it take to walk around the moon? At 4 hours a day, it would take about 547 Earth days, or about 1.5 years.
9. How many active satellites currently orbit the planet? As of September 2021, there were around 7,500 active satellites in low Earth orbit.
10. The "absolute limit" on the human life span: probably 120 to 150 years.