Chemicals that were banned after they punched a hole in Earth's ozone layer are still building up at an alarming rate in our atmosphere, according to research published today in the journal Nature Geoscience. The chemicals were once widely used in air conditioning and refrigeration but were supposed to be phased out globally by 2010. From a report: Scientists were surprised to find that concentrations of several types of those chemicals have climbed since then, reaching a record high in 2020. The culprit could be alternative refrigerants that were meant to replace the ozone-depleting substances, the new research suggests. An even bigger problem? Researchers can't find where all the chemicals are leaking from. The ozone layer has managed to make a remarkable recovery over the past few decades. If emissions continue to climb, however, it could counteract some of that progress and exacerbate climate change.

Cruising at a depth of 8,336 meters (over 27,000 feet) just above the seabed, a young snailfish has become the deepest fish ever filmed by scientists during a probe into the abyss of the northern Pacific Ocean. From a report: Scientists from University of Western Australia and Tokyo University of Marine Science and Technology released footage of the snailfish on Sunday filmed last September by sea robots in deep trenches off Japan. Along with the filming the deepest snailfish, the scientists physically caught two other specimens at 8,022 meters and set another record for the deepest catch. Previously, the deepest snailfish ever spotted was at 7,703 meters in 2008, while scientists had never been able to collect fish from anywhere below 8,000 meters. "What is significant is that it shows how far a particular type of fish will descend in the ocean," said marine biologist Alan Jamieson, founder of the Minderoo-UWA Deep Sea Research Centre, who led the expedition. Scientists are filming in the trenches off Japan as part of a 10-year study into the deepest fish populations in the world. Snailfish are members of Liparidae family, and while most snailfish live in shallow water, others survive at some of the greatest depths ever recorded, Jamieson said.

A Canadian astronaut and three NASA veterans, including one of the world's most experienced female spacewalkers, will fly around the moon next year in the first piloted voyage beyond Earth orbit since the Apollo program ended 50 years ago, the space agency announced Monday. From a report: NASA's Reid Wiseman, Christina Koch and Victor Glover will join Canadian rookie Jeremy Hansen aboard an Orion crew capsule for the Artemis program's second fight, the first carrying a crew bound for the moon. The Artemis 2 mission is intended to pave the way toward the first moon landing -- Artemis 3 -- in the 2025-26 timeframe. Wiseman, Koch and Glover are all veterans of long-duration stays aboard the International Space Station while Hansen will be making his first space flight. Navy Capt. Wiseman, 47, a widowed father of two, is a veteran F/A-18F Super Hornet pilot who holds a master's in systems engineering. He launched aboard a Russian Soyuz spacecraft in 2014 and spent 165 days aboard the space station, then served as chief astronaut after his return to Earth.

Koch, 44, holds a master's in electrical engineering who has experience in Antarctic research. She also launched aboard a Soyuz and spent nearly a full year aboard the lab in 2019-20, venturing outside for six spacewalks, including three all-female excursions. With 42 hours and 15 minutes of EVA time, she ranks third on the list of most experienced female spacewalkers. Glover, 46, is a Navy captain, a father of four and one of only a half dozen African Americans in NASA's astronaut corps. He launched to the station aboard the first operational SpaceX Crew Dragon mission in 2021-22, logging 168 days in orbit. Glover is a veteran test pilot with more than 3,000 hours of flight time and more than 400 carrier landings. Hansen, a 47-year-old colonel in the Canadian armed forces and father of three, is a veteran F-18 fighter pilot. He will be the ninth Canadian to fly in space and the first to venture beyond Earth orbit.

America's Department of Defense "is gearing up for a future conflict in space," reports the Wall Street Journal, "as China and Russia deploy missiles and lasers that can take out satellites and disrupt military and civilian communications." The White House this month proposed a $30 billion annual budget for the U.S. Space Force, almost $4 billion more than last year and a bigger jump than for other services including the Air Force and the Navy.... A key aim of a stand-alone force was to plan, equip and defend U.S. interests in space for all of the services and focus attention on the emerging threats. For the first time, the spending request also includes plans for simulators and other equipment to train Guardians, as Space Force members are known, for potential battle....

Just as it is on Earth, China is the Pentagon's big worry in space. In unveiling a defense strategy late last year, the Biden administration cast China as the greatest danger to U.S. security. In space, the threats from China range from ground-launched missiles or lasers that could destroy or disable U.S. satellites, to jamming and other cyber interference and attacks in space, said Pentagon officials. China has invested heavily in its space program, with a crewed orbiting station, developing ground-based missiles and lasers as well as more surveillance capabilities. This is part of its broader military aims of denying adversaries access to space-based assets.

China is "testing on-orbit satellite systems which could be weaponized as they have already shown the capability to physically control and move other satellites," Gen. Chance Saltzman, chief of space operations for the U.S. Space Force, told a congressional hearing this month. "There's nothing we can do in space that's of any value if the networks that process the information and data are vulnerable to attack," Gen. Saltzman said. A central part of the Space Force's next tranche of military contracts for rocket launches is protecting them from attacks by China and other adversaries. The hope is to make satellites tougher to approach by adversaries' equipment as well as less susceptible to lasers and jamming from space or the ground, said Space Force leaders.
The article also notes the US Defense Department "is moving away from a small number of school bus-size satellites to a planned constellation of hundreds of smaller ones.

"The larger number of targets makes any one satellite less crucial to the network but also requires changes in the capabilities of the satellites themselves, the rockets that put them into orbit and the communications systems they host."

"Researchers have 'hacked' the earliest stages of photosynthesis," according to a new announcement from the University of Cambridge.

CNET reports: Scientists have studied photosynthesis in plants for centuries, but an international team believes they've unlocked new secrets in nature's great machine that could revolutionize sustainable fuels and fight climate change. The team says they've determined it's possible to extract an electrical charge at the best possible point in photosynthesis. This means harvesting the maximum amount of electrons from the process for potential use in power grids and some types of batteries. It could also improve the development of biofuels. While it's still early days, the findings, reported in the journal Nature, could reduce greenhouse gasses in the atmosphere and provide insights to improve photovoltaic solar panels.

The key breakthrough came when researchers observed the process of photosynthesis at ultrafast timescales. "We can take photos at different times which allow us to watch changes in the sample really, really quickly — a million billion times faster than your iPhone," Dr. Tomi Baikie, from the University of Cambridge's Cavendish Laboratory, told CNET....

Previous demonstrations connected cyanobacteria, algae and other plants to electrodes to create so-called bio-photoelectrochemical cells that tap into the photosynthetic process to generate electricity. Baikie said they were surprised to discover a previously unknown pathway of energy flow at the beginning of the process that could enable extracting the charge in a more efficient way.

It was 10 times brighter than any previously detected, reports the BBC, noting it illuminated much of the galaxy.

RockDoctor (Slashdot reader #15,477) writes: A recent paper on ArXiv describes a Gamma Ray Burst (GRB) whose light arrived late last year as one of the strongest ever observed. GRB 221009A was detected on October 9 last year (yes, that number is a date), so 5 and a bit months from event to papers published is remarkably quick, and I anticipate that there will be a lot more papers on it in the future. Stand-out points are :


- it lasted for more than ten hours after detection (a space x-ray telescope had time to orbit out of the Earth's shadow and observe it)
- it could (briefly) be observed by amateur astronomers.
- it is also one of the closest gamma-ray bursts seen and is among the most energetic and luminous bursts.


It's redshift is given as z= 0.151, which Wikipedia translates as occurring 1.9 billion years ago, at a distance of 2.4 billion light-years from Earth.

Observations have been made of the burst in radio telescopes (many sites, continuing), optical (1 site ; analysis of HST imaging is still in work), ultraviolet (1 space telescope), x-ray (2 space telescopes) and gamma ray (1 sapce telescope) — over a range of 1,000,000,000,000,000-fold (10^15) in wavelength. It's brightness is such that radio observatories are expected to continue to detect it for "years to come".

The model of the source is of several (3~10) Earth-masses of material ejected from (whatever, probably a compact body (neutron star or black dwarf) merger) and impacting the interstellar medium at relativistic speeds (Lorentz factor 9, velocity >99.2% of c). The absolute brightness of the burst is high (about 10^43 J) and it is made to seem brighter by being close, and also by the energy being emitted in a narrow jet ("beamed"), which we happen to be near the axis of.

General news sites are starting to notice the reports, including the hilarious acronym of "BOAT — Brightest Of All Time". Obviously, with observations having only occurred for about 50 years. we're likely to see something else as bright within the next 50 years.

The brightness of the x-rays from this GRB is such that the x-rays scattered from dust in our galaxy creates halos around the source — which are bright enough to see, and to tell us things about the dust in our galaxy (which is generally very hard to see). Those images are more photogenic than the normal imagery for GRBs — which is nothing — so you'll see them a lot.

"SpaceX has its first commercial cargo contract to the lunar surface," says Jaret Matthews, the founder of the tiny startup Astrolab which makes a moon rover the size of a Jeep Wrangler. The New York Times reports: On Friday, Astrolab announced that it had signed an agreement with SpaceX for its Flexible Logistics and Exploration Rover, or FLEX, to be a payload on an uncrewed Starship cargo mission that is to take off as early as mid-2026...." SpaceX, which did not respond to requests for comment, has yet to announce that it is planning this commercial Starship mission to the moon's surface, headed to the south polar region. Astrolab would be just one of the customers sharing the voluminous cargo compartment of the Starship flight, Mr. Matthews said.

Mr. Matthews, an engineer who previously worked at SpaceX and NASA's Jet Propulsion Laboratory, founded Astrolab less than four years ago. Located a stone's throw from SpaceX's headquarters in Hawthorne, Calif., it has about 20 full-time employees, he said.... Mr. Matthews declined to say how much it would cost to get FLEX to the moon or how much money Astrolab has raised. He said Astrolab would make money by lifting and deploying cargo for customers on the lunar surface. That could include scientific instruments. In the future, the rover could help build lunar infrastructure. "Essentially providing what I like to call last-mile mobility on the moon," Mr. Matthews said. "You can kind of think of it like being U.P.S. for the moon. And in this analogy, Starship is the container ship crossing the ocean, and we're the local distribution solution...."

Mr. Matthews said Astrolab already had several signed agreements for payloads. That appears to be part of the expanding potential market for [SpaceX's] Starship.... For NASA, Starship is how its astronauts will land on the moon during the Artemis III mission, currently scheduled for 2025. Before that, SpaceX is to conduct an uncrewed flight to demonstrate the capability of spacecraft to get to the moon and set down there in one piece. If those schedules hold, the commercial cargo mission with the Astrolab rover could take place the next year....

Farther into the future, the company has even grander visions. "Ultimately our goal is to have a fleet of rovers both on the moon and Mars," Mr. Matthews said. "And I really think I see these vehicles as the catalysts ultimately for the off-Earth economy."

"Chinese officials have released an updated analysis of more than 1,300 samples taken from the Wuhan wet market at the beginning of the Covid-19 pandemic," reports the Telegraph: In a preprint published on Wednesday, researchers from the Chinese Center for Disease Control and Prevention said there was "convincing evidence" that Sars-Cov-2 was spreading widely at Wuhan's Huanan seafood market in January 2020.
Dr Tedros Adhanom Ghebreyesus, head of the WHO, tells them "This data could and should have been shared three years ago." China's paper then called for "more work involving international coordination" to investigate the potential origins of SARS-CoV-2. "Surveillance of wild animals using a viromic approach should be enhanced to explore the potential natural and intermediate hosts for SARS-CoV-2, if any, which would help to prevent future pandemics caused by animal-origin coronaviruses or alike, with a spillover event."

But the Telegraph notes that China also "claimed it's not clear how Covid got there, as no virus was found in the 457 animal swabs taken from 18 species at the market. The data behind the latest Chinese research has proved controversial, after a team of international experts downloaded the genetic sequences that had been discreetly shared on a database called GISAID. Their analysis was the first conducted on the data outside China, which has been accused by the World Health Organization of withholding critical clues. In samples taken from the Wuhan market that tested positive for Covid, the international team found genetic material from wildlife known to be susceptible to Sars-Cov-2 — including racoon dogs, palm civets and Himalayan marmots. This does not prove these animals were infected, but does confirm they were being illegally sold at Huanan market in early 2020.

"What we are seeing is the genomic ghost of that animal in the stalls," said Dr Florence Débarre, an evolutionary biologist at the French National Centre for Scientific Research, who first spotted the data when trawling GISAID. "It's close to the best [evidence] we can get, because the animals were gone when they came to sample the markets," she told the Telegraph earlier this month....

The latest paper from China CDC — published on ChinaXiv on Wednesday — reveals that although researchers sampled 18 species including bamboo rats, wild boars and hedgehogs, they did not take specimens from animals including raccoon dogs now known to be susceptible to the virus. It is likely that this is because they had already been removed. Some researchers said this undermines the China CDC's suggestion that animals did not bring the virus into the market — a route that China has consistently discredited, much like the potential for a laboratory leak, as it does not want the origin to be within its own borders. "This claim that no live animals with the virus were found at the market is one of the most pernicious and misleading talking points proffered," said Dr Michael Worobey, an evolutionary biologist at the University of Arizona who led the international analysis.

"If no live raccoon dogs... or other plausible intermediate hosts species were tested (because they had all disappeared by the time this testing took place), then saying that the lack of Sars-CoV-2 live animals at the market is evidence against a zoonotic origin is at best misinformed. At worst, it is deliberate disinformation," he told the Telegraph.

The scientific community is reeling after NASA gutted funding for a key Venus mission that was "poised to answer some of the biggest questions about the planet and its volcanic activity," reports The Verge. From the report: This month saw the announcement of one of the most exciting findings about Venus in decades: the first direct evidence of an active volcano there. [...] This finding is "mind-blowing," Venus scientist Darby Dyar told The Verge, opening up possibilities to learn about Venus' geology and atmosphere as well as whether the planet was once habitable. But in the space science community, the excitement about this finding is being overshadowed by the "soft cancellation" of a key NASA Venus mission, which Dyar is also deputy principal investigator for and which had been set to launch in 2028.

The Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy (VERITAS) mission was one of three missions set to explore Venus in the next few years, kicking off NASA's "decade of Venus" and seeing a return to the study of our planetary neighbor, which scientists have been calling for for years. But at the Lunar and Planetary Science Conference held recently in Houston, Texas, VERITAS principal investigator Sue Smrekar announced that the mission's funding had been completely gutted, leaving the mission in a state of precarious limbo.

This came as a surprise to many of the conference attendees, who were soon tweeting their support for the mission using the hashtag #SaveVERITAS. The Planetary Society also put out a statement describing the delay of the mission's launch by at least three years as "uncalled-for" and calling on NASA to commit to launching by 2029. NASA has cited problems with another mission, Psyche, as the reason for delaying VERITAS by at least three years. Both Psyche and VERITAS are managed by the Jet Propulsion Laboratory (JPL), the NASA / Caltech research center that is responsible for building robotic spacecraft such as the Mars rovers. JPL had problems meeting its requirements for the Psyche mission, which aims to visit a metal asteroid, and missed its launch date last year. An independent review into the missed launch found it was due to, among other problems, workforce issues at JPL. Budget cuts and cancellations aren't uncommon, but the situation with VERITAS is different because it "had already been selected by NASA to be part of its Discovery Program," adds the Verge. "Historically, once a mission has been selected by NASA, those working on it can be confident that funding will be available. If a delay happens -- as is not uncommon in large, complex missions -- then a lower level of funding is typically made available to keep the basic essentials in place, called bridge funding, until full funding can be restored."

Although the team asked NASA for bridge funding to maintain mission essentials, "virtually all of their funding has been cut, leaving them with a tiny $1.5 million per year," says the report. "This is a highly unusual situation for a selected mission because delaying and restarting missions is so expensive."

The UK government will defy scientific doubts to place a massive bet on technology to capture and store carbon dioxide in undersea caverns, to enable an expansion of oil and gas in the North Sea. From a report: Grant Shapps, the energy and net zero secretary, on Thursday unveiled the "powering up Britain" strategy, with carbon capture and storage (CCS) at its heart, during a visit to a nuclear fusion development facility in Oxford. Shapps said the continued production of oil and gas in the North Sea was still necessary, and that the UK had a geological advantage in being able to store most of the carbon likely to be produced in Europe for the next 250 years in the large caverns underneath the North Sea. "Unless you can explain how we can transition [to net zero] without oil and gas, we need oil and gas," he said. "I am very keen that we fill those cavities with storing carbon. I think there are huge opportunities for us to do that."

Shapps pointed to the $24.7bn the government is planning to spend over 20 years on developing CCS, which he said would generate new jobs and make the UK a world leader in the technology. Among the 1,000 pages of proposals to be published on Thursday will be boosts for offshore wind, hydrogen, heat pumps and electric vehicles. A green finance strategy, to be set out by the chancellor of the exchequer, Jeremy Hunt, will be aimed at mobilising private-sector money for investments in green industry, and there will be a consultation on carbon border taxes, aimed at penalising the import of high-carbon goods from overseas. But the plans contain no new government spending, and campaigners said they missed out key elements, such as a comprehensive programme of home insulation and a full lifting of the ban on new onshore wind turbines in England.

Researchers have discovered one of the most massive black holes ever discovered, clocking in at around 32.7 billion times the mass of the sun. It's located in a galaxy at the center of a massive cluster named Abell 1201, some 2.7 billion light-years away. ScienceAlert reports: The new figure exceeds previous estimates by at least 7 billion solar masses, demonstrating the power of curved light for measuring masses with precision. One way we can find these black holes is looking for an effect called gravitational lensing. This occurs when space-time itself is warped by mass; imagine space-time as a rubber sheet, and the mass as a heavy weight on it. Any light traveling through that region of space-time has to travel along a curved path, and that can look very interesting to an observer watching from afar. [...]

The central galaxy, or brightest cluster galaxy (BCG) of Abell 1201, is a large, diffuse elliptical galaxy well-known as a strong gravitational lens. A galaxy far beyond the BCG appears alongside it as an elongated smear, like an eyebrow closely wrapped around its outskirts. This smear was discovered in 2003; in 2017, astronomers found a second, fainter smear, even closer to the galactic center. This implies, astronomers proposed, the presence of a very large black hole at the center of the BCG, but the data available was not detailed enough to resolve the central mass, or reveal more about what was in there.

[Researchers] not only had access to more recent observations, but devised the tools to understand them. They conducted hundreds of thousands of simulations of light moving through the Universe, altering the mass of the black hole at the galaxy's center, looking for results that replicate the lensing we observe with Abell 1021 BCG. All but one of their models preferred a massive black hole at the center of the galaxy; and the best fit for the mass of that black hole was 32.7 billion times the mass of the Sun. That pushes it well into ultramassive territory, black holes more massive than 10 billion Suns, and close to the theoretical upper limit for black hole masses of 50 billion Suns. The research has been published in the Monthly Notices of the Royal Astronomical Society.

Virgin Orbit is ceasing operations "for the foreseeable future" after failing to secure a funding lifeline, CEO Dan Hart told employees during an all-hands meeting Thursday afternoon. The company will lay off nearly all of its workforce. CNBC reports: "Unfortunately, we've not been able to secure the funding to provide a clear path for this company," Hart said, according to audio of the 5 p.m. ET meeting obtained by CNBC. "We have no choice but to implement immediate, dramatic and extremely painful changes," Hart said, audibly choking up on the call. He added this would be "probably the hardest all-hands that we've ever done in my life."

The company will eliminate all but 100 positions, amounting to about 90% of the workforce, Hart said, noting the layoffs will affect every team and department. In a securities filing, the company said the layoffs constituted 675 positions, or approximately 85%. "This company, this team -- all of you -- mean a hell of a lot to me. And I have not, and will not, stop supporting you, whether you're here on the journey or if you're elsewhere," Hart said. Virgin Orbit will "provide a severance package for every departing" employee, Hart said, with a cash payment, extension of benefits, and support in finding a new position -- with a "direct pipeline" set up with sister company Virgin Galactic for hiring.

An anonymous reader quotes a report from Phys.Org: What does a stressed plant sound like? A bit like bubble-wrap being popped. Researchers in Israel report in the journal Cell on March 30 that tomato and tobacco plants that are stressed -- from dehydration or having their stems severed -- emit sounds that are comparable in volume to normal human conversation. The frequency of these noises is too high for our ears to detect, but they can probably be heard by insects, other mammals, and possibly other plants. "Even in a quiet field, there are actually sounds that we don't hear, and those sounds carry information," says senior author Lilach Hadany, an evolutionary biologist and theoretician at Tel Aviv University. "There are animals that can hear these sounds, so there is the possibility that a lot of acoustic interaction is occurring."

The researchers used microphones to record healthy and stressed tomato and tobacco plants, first in a soundproofed acoustic chamber and then in a noisier greenhouse environment. They stressed the plants via two methods: by not watering them for several days and by cutting their stems. After recording the plants, the researchers trained a machine-learning algorithm to differentiate between unstressed plants, thirsty plants, and cut plants. The team found that stressed plants emit more sounds than unstressed plants. The plant sounds resemble pops or clicks, and a single stressed plant emits around 30-50 of these clicks per hour at seemingly random intervals, but unstressed plants emit far fewer sounds. "When tomatoes are not stressed at all, they are very quiet," says Hadany.

Water-stressed plants began emitting noises before they were visibly dehydrated, and the frequency of sounds peaked after five days with no water before decreasing again as the plants dried up completely. The types of sound emitted differed with the cause of stress. The machine-learning algorithm was able to accurately differentiate between dehydration and stress from cutting and could also discern whether the sounds came from a tomato or tobacco plant. Although the study focused on tomato and tobacco plants because of their ease to grow and standardize in the laboratory, the research team also recorded a variety of other plant species. "We found that many plants -- corn, wheat, grape, and cactus plants, for example -- emit sounds when they are stressed," says Hadany. The researchers suggest that these noises "might be due to the formation and bursting of air bubbles in the plant's vascular system, a process called cavitation," reports Phys.Org. It's unclear if the plants are producing these sounds in order to communicate with other organisms.

Researchers have developed a novel fuel cell implant for type 1 diabetes that can successfully produce and release insulin when triggered. New Atlas reports: The fuel cell itself, which resembles a teabag that's slightly larger than a fingernail, is covered in a nonwoven fabric and coated with alginate, an algae-derived product used widely in biomedicine because of its high degree of biocompatibility. When implanted under the skin, the cell's alginate soaks up body fluid, allowing glucose to permeate the surface and flow into the power center. Inside the cell, the team developed a copper-based nanoparticle anode that splits glucose into gluconic acid and a proton to generate an electric current. "Many people, especially in the Western industrialized nations, consume more carbohydrates than they need in everyday life," [Martin Fussenegger from the Department of Biosystems Science and Engineering at ETH Zurich] said. "This gave us the idea of using this excess metabolic energy to produce electricity to power biomedical devices.

The fuel cell was then coupled with an insulin capsule featuring the team's beta cells, which could be triggered to secrete insulin via electric current from the implant. Overall, the two components provide a self-regulating circuit. When the fuel cell powered by glucose senses excess blood sugar, it powers up. This then stimulates the beta cells to produce and secrete insulin. As blood sugar levels dip, it trips a threshold sensor in the fuel cell, so it powers down, in turn stopping the insulin production and release. This self-sustained circuit could also produce enough power to communicate with a device such as a smartphone, which allows for monitoring and adjusting, and even has potential for remote access for medical intervention. The study was published in the journal Advanced Materials.

An anonymous reader quotes a report from Fortune: The U.S., Soviet Union, and Japan have all sent robots to the moon over the past 50 years. Now, a group of college students is joining in by building a shoebox-sized rover that they plan to launch in May, Bloomberg reported Wednesday. The lunar rover, called Iris, will be the first privately-made American robot to explore the surface of the moon, according to the project's website. But that's not all -- it would also be the first student-built rover, and the smallest and lightest one yet. Around 300 students from Carnegie Mellon University have all pitched in on the project.

Iris is tiny and weighs 2 kgs (4.4 lbs) -- but the design is deliberately small. The rover will fly on a private rocket carrying 14 payloads to the moon, which includes Iris, projects for the National Aeronautics and Space Administration as well as some humans. The project involved around 300 students, who will also control and operate Moonshot Mission Control, the control center for Iris based in CMU's campus in Pittsburgh. Iris will spend a total of 50 hours on the moon's surface before it runs out of battery, after which it will be left on the moon. It has two cameras that will help it capture images of dust on the moon's surface.

An anonymous reader quotes a report from the Guardian: A mammoth meatball has been created by a cultivated meat company, resurrecting the flesh of the long-extinct animals. The project aims to demonstrate the potential of meat grown from cells, without the slaughter of animals, and to highlight the link between large-scale livestock production and the destruction of wildlife and the climate crisis.

The mammoth meatball was produced by Vow, an Australian company, which is taking a different approach to cultured meat. There are scores of companies working on replacements for conventional meat, such as chicken, pork and beef. But Vow is aiming to mix and match cells from unconventional species to create new kinds of meat. The company has already investigated the potential of more than 50 species, including alpaca, buffalo, crocodile, kangaroo, peacocks and different types of fish. The first cultivated meat to be sold to diners will be Japanese quail, which the company expects will be in restaurants in Singapore this year. [...]

Vow worked with Prof Ernst Wolvetang, at the Australian Institute for Bioengineering at the University of Queensland, to create the mammoth muscle protein. His team took the DNA sequence for mammoth myoglobin, a key muscle protein in giving meat its flavor, and filled in the few gaps using elephant DNA. This sequence was placed in myoblast stem cells from a sheep, which replicated to grow to the 20 billion cells subsequently used by the company to grow the mammoth meat. "It was ridiculously easy and fast," said Wolvetang. "We did this in a couple of weeks." Initially, the idea was to produce dodo meat, he said, but the DNA sequences needed do not exist. Tim Noakesmith, cofounder of Vow, said: "We chose the woolly mammoth because it's a symbol of diversity loss and a symbol of climate change." Bas Korsten at creative agency Wunderman Thompson added: "Our aim is to start a conversation about how we eat, and what the future alternatives can look and taste like. Cultured meat is meat, but not as we know it."

No one has yet to taste the mammoth meatball, notes the report. "We haven't seen this protein for thousands of years," said Wolvetang. "So we have no idea how our immune system would react when we eat it. But if we did it again, we could certainly do it in a way that would make it more palatable to regulatory bodies."

Lockheed Martin has created a spinoff devoted to lunar infrastructure, Crescent Space, whose first project is a Moon-to-Earth satellite network. Engadget reports: Parsec, as it's called, uses a constellation of small lunar satellites to provide a non-stop connection between astronauts, their equipment and the people back home. The system will also provide navigation help. The technology should help explorers keep in touch, and assist with spacecraft course changes. As Lockheed Martin explains, though, it could prove vital to those on lunar soil. Parsec's nodes create a lunar equivalent to GPS, giving astronauts their exact positions and directions back to base. A rover crew might know how to return home without driving into a dangerous crater, for instance.

Crescent's first Parsec nodes should be operational by 2025, with Lockheed Martin providing the satellites. And before you ask: yes, the company is clearly hoping for some big customers. CEO Joe Landon (formerly a Lockheed Martin Space VP) claims Crescent is "well positioned" to support NASA's Artemis Moon landings and other exploratory missions.

Clancy William James writes via The Conversation: We have just published evidence in Nature Astronomy for what might be producing mysterious bursts of radio waves coming from distant galaxies, known as fast radio bursts or FRBs. Two colliding neutron stars -- each the super-dense core of an exploded star -- produced a burst of gravitational waves when they merged into a "supramassive" neutron star. We found that two and a half hours later they produced an FRB when the neutron star collapsed into a black hole. Or so we think. The key piece of evidence that would confirm or refute our theory -- an optical or gamma-ray flash coming from the direction of the fast radio burst -- vanished almost four years ago. In a few months, we might get another chance to find out if we are correct. [...]

The Laser Interferometer Gravitational-Wave Observatory (LIGO) has found two binary neutron star mergers. Crucially, the second, known as GW190425, occurred when a new FRB-hunting telescope called CHIME was also operational. However, being new, it took CHIME two years to release its first batch of data. When it did so, [Alexandra Moroianu, a masters student at the University of Western Australia and lead author of the study] quickly identified a fast radio burst called FRB 20190425A which occurred only two and a half hours after GW190425. Exciting as this was, there was a problem -- only one of LIGO's two detectors was working at the time, making it very uncertain where exactly GW190425 had come from. In fact, there was a 5% chance this could just be a coincidence. Worse, the Fermi satellite, which could have detected gamma rays from the merger -- the "smoking gun" confirming the origin of GW190425 -- was blocked by Earth at the time. [...]

LIGO and two other gravitational wave detectors, Virgo and KAGRA, will turn back on in May this year, and be more sensitive than ever, while CHIME and other radio telescopes are ready to immediately detect any FRBs from neutron star mergers. In a few months, we may find out if we've made a key breakthrough -- or if it was just a flash in the pan.

For the first time, scientists may have discovered indirect evidence that large amounts of invisible dark matter surround black holes. The discovery, if confirmed, could represent a major breakthrough in dark matter research. Space.com reports: Dark matter makes up around 85% of all matter in the universe, but it is almost completely invisible to astronomers. This is because, unlike the matter that comprises stars, planets and everything else around us, dark matter doesn't interact with light and can't be seen. Fortunately, dark matter does interact gravitationally, enabling researchers to infer the presence of dark matter by looking at its gravitational effects on ordinary matter "proxies." In the new research, a team of scientists from The Education University of Hong Kong (EdUHK) used stars orbiting black holes in binary systems as these proxies.

The team watched as the orbits of two stars decayed, or slightly slowed, by about 1 millisecond per year while moving around their companion black holes, designated A0620-00 and XTE J1118+480. The team concluded that the slow-down was the result of dark matter surrounding the black holes which generated significant friction and a drag on the stars as they whipped around their high-mass partners.

Using computer simulations of the black hole systems, the team applied a widely held model in cosmology called the dark matter dynamical friction model, which predicts a specific loss of momentum on objects interacting gravitationally with dark matter. The simulations revealed that the observed rates of orbital decay matched the predictions of the friction model. The observed rate of orbital decay is around 50 times greater than the theoretical estimation of about 0.02 milliseconds of orbital decay per year for binary systems lacking dark matter. The study has been published in The Astrophysical Journal Letters.

Slashdot reader votsalo shares a report from the Guardian: Tiny glass beads strewn across the moon's surface contain potentially billions of tons of water that could be extracted and used by astronauts on future lunar missions, researchers say. The discovery is thought to be one of the most important breakthroughs yet for space agencies that have set their sights on building bases on the moon, as it means there could be a highly accessible source of not only water but also hydrogen and oxygen. "This is one of the most exciting discoveries we've made," said Mahesh Anand, a professor of planetary science and exploration at the Open University. "With this finding, the potential for exploring the moon in a sustainable manner is higher than it's ever been."

Anand and a team of Chinese scientists analyzed fine glass beads from lunar soil samples returned to Earth in December 2020 by the Chinese Chang'e-5 mission. The beads, which measure less than a millimeter across, form when meteoroids slam into the moon and send up showers of molten droplets. These then solidify and become mixed into the moon dust. Tests on the glass particles revealed that together they contain substantial quantities of water, amounting to between 300m and 270 billion tons across the entire moon's surface. "This is going to open up new avenues which many of us have been thinking about," said Anand. "If you can extract the water and concentrate it in significant quantities, it's up to you how you utilize it."

The latest research, published in Nature Geoscience, points to fine glass beads as the source of that surface water. Unlike frozen water lurking in permanently shaded craters, this should be far easier to extract by humans or robots working on the moon. "It's not that you can shake the material and water starts dripping out, but there's evidence that when the temperature of this material goes above 100C, it will start to come out and can be harvested," Anand said. The water appears to form when high-energy particles streaming from the sun -- the so-called solar wind -- strike the molten droplets. The solar wind contains hydrogen nuclei, which combine with oxygen in the droplets to produce water or hydroxyl ions. The water then becomes locked in the beads, but it can be released by heating the material. Further tests on the material showed the water diffuses in and out of the beads on the timeframe of a few years, confirming an active water cycle on the moon. According to Prof Sen Hu, a senior co-author of the study at the Chinese Academy of Sciences in Beijing, such impact glasses could store and release water on other airless rocks in the solar system.