New laws in Maryland and Montana are the first in the nation to restrict law enforcement's use of genetic genealogy, the DNA matching technique that in 2018 identified the Golden State Killer, in an effort to ensure the genetic privacy of the accused and their relatives. From a report: Beginning on Oct. 1, investigators working on Maryland cases will need a judge's signoff before using the method, in which a "profile" of thousands of DNA markers from a crime scene is uploaded to genealogy websites to find relatives of the culprit. The new law, sponsored by Democratic lawmakers, also dictates that the technique be used only for serious crimes, such as murder and sexual assault. And it states that investigators may only use websites with strict policies around user consent. Montana's new law, sponsored by a Republican, is narrower, requiring that government investigators obtain a search warrant before using a consumer DNA database, unless the consumer has waived the right to privacy.

The laws "demonstrate that people across the political spectrum find law enforcement use of consumer genetic data chilling, concerning and privacy-invasive," said Natalie Ram, a law professor at the University of Maryland who championed the Maryland law. "I hope to see more states embrace robust regulation of this law enforcement technique in the future." Privacy advocates like Ms. Ram have been worried about genetic genealogy since 2018, when it was used to great fanfare to reveal the identity of the Golden State Killer, who murdered 13 people and raped dozens of women in the 1970s and '80s. After matching the killer's DNA to entries in two large genealogy databases, GEDmatch and FamilyTreeDNA, investigators in California identified some of the culprit's cousins, and then spent months building his family tree to deduce his name -- Joseph James DeAngelo Jr. -- and arrest him.

Slashdot reader 4wdloop shared this report from NVIDIA's blog, joking that maybe this is where all NVIDIA's chips are going: It will help piece together a 3D map of the universe, probe subatomic interactions for green energy sources and much more. Perlmutter, officially dedicated Thursday at the National Energy Research Scientific Computing Center (NERSC), is a supercomputer that will deliver nearly four exaflops of AI performance for more than 7,000 researchers. That makes Perlmutter the fastest system on the planet on the 16- and 32-bit mixed-precision math AI uses. And that performance doesn't even include a second phase coming later this year to the system based at Lawrence Berkeley National Lab.

More than two dozen applications are getting ready to be among the first to ride the 6,159 NVIDIA A100 Tensor Core GPUs in Perlmutter, the largest A100-powered system in the world. They aim to advance science in astrophysics, climate science and more. In one project, the supercomputer will help assemble the largest 3D map of the visible universe to date. It will process data from the Dark Energy Spectroscopic Instrument (DESI), a kind of cosmic camera that can capture as many as 5,000 galaxies in a single exposure. Researchers need the speed of Perlmutter's GPUs to capture dozens of exposures from one night to know where to point DESI the next night. Preparing a year's worth of the data for publication would take weeks or months on prior systems, but Perlmutter should help them accomplish the task in as little as a few days.

"I'm really happy with the 20x speedups we've gotten on GPUs in our preparatory work," said Rollin Thomas, a data architect at NERSC who's helping researchers get their code ready for Perlmutter. DESI's map aims to shed light on dark energy, the mysterious physics behind the accelerating expansion of the universe.

A similar spirit fuels many projects that will run on NERSC's new supercomputer. For example, work in materials science aims to discover atomic interactions that could point the way to better batteries and biofuels. Traditional supercomputers can barely handle the math required to generate simulations of a few atoms over a few nanoseconds with programs such as Quantum Espresso. But by combining their highly accurate simulations with machine learning, scientists can study more atoms over longer stretches of time. "In the past it was impossible to do fully atomistic simulations of big systems like battery interfaces, but now scientists plan to use Perlmutter to do just that," said Brandon Cook, an applications performance specialist at NERSC who's helping researchers launch such projects. That's where Tensor Cores in the A100 play a unique role. They accelerate both the double-precision floating point math for simulations and the mixed-precision calculations required for deep learning.

"Traveling in a space plane is a lot like traveling in a regular plane, except for the middle part," quips Bloomberg Business Week: After reaching cruising altitude, the pilot hits the rocket boosters and blasts the aircraft to the edge of space at more than 9,000 mph, or about 12 times the speed of sound. The plane travels at that speed for about 15 minutes, then glides against the atmosphere to slow itself down, cruising back to Earth to land at a conventional airport.

Venus Aerospace Corp., a startup pursuing a hypersonic space plane, is aiming to use this technique to ferry people from Los Angeles to Tokyo in about an hour.

The company was started by two former Virgin Orbit LLC employees: Sarah "Sassie" Duggleby, a code-writing launch engineer, and her husband, Andrew, who managed launch, payload, and propulsion operations... Venus now has 15 employees, most veterans of the space industry, and has received investment from venture capital firms including Prime Movers and Draper Associates. "Every few decades humans attempt this," says Andrew Duggleby, in a tacit acknowledgment of the idea's repeated failure. "This time it will work...."

Still, flights aren't imminent. The shape of the aircraft is a work in progress, and the company will begin testing three scale models this summer. The Dugglebys, who've secured a small research grant from the U.S. Air Force and are pursuing additional funding from the Department of Defense, expect the project to take a decade or more.

Slashdot reader sciencehabit shares Science magazine's look at efforts to transform zinc batteries "from small, throwaway cells often used in hearing aids into rechargeable behemoths that could be attached to the power grid, storing solar or wind power for nighttime or when the wind is calm." With startups proliferating and lab studies coming thick and fast, "Zinc batteries are a very hot field," says Chunsheng Wang, a battery expert at the University of Maryland, College Park. Lithium-ion batteries — giant versions of those found in electric vehicles — are the current front-runners for storing renewable energy, but their components can be expensive. Zinc batteries are easier on the wallet and the planet — and lab experiments are now pointing to ways around their primary drawback: They can't be recharged over and over for decades.

For power storage, "Lithium-ion is the 800-pound gorilla," says Michael Burz, CEO of EnZinc, a zinc battery startup. But lithium, a relatively rare metal that's only mined in a handful of countries, is too scarce and expensive to back up the world's utility grids. (It's also in demand from automakers for electric vehicles.) Lithium-ion batteries also typically use a flammable liquid electrolyte. That means megawatt-scale batteries must have pricey cooling and fire-suppression technology. "We need an alternative to lithium," says Debra Rolison, who heads advanced electrochemical materials research at the Naval Research Laboratory. Enter zinc, a silvery, nontoxic, cheap, abundant metal. Nonrechargeable zinc batteries have been on the market for decades. More recently, some zinc rechargeables have also been commercialized, but they tend to have limited energy storage capacity. Another technology — zinc flow cell batteries — is also making strides. But it requires more complex valves, pumps, and tanks to operate. So, researchers are now working to improve another variety, zinc-air cells...

Advances are injecting new hope that rechargeable zinc-air batteries will one day be able to take on lithium. Because of the low cost of their materials, grid-scale zinc-air batteries could cost $100 per kilowatt-hour, less than half the cost of today's cheapest lithium-ion versions. "There is a lot of promise here," Burz says. But researchers still need to scale up their production from small button cells and cellphone-size pouches to shipping container-size systems, all while maintaining their performance, a process that will likely take years.

The senior technology editor at Ars Technica checked the plausibility of Andy Weir's new science fiction novel Project Hail Mary with an actual professor of linguistics and cognitive science at Northern Illinois University. It's another tale of solving problems with science, as a lone human named Ryland Grace and a lone alien named Rocky must save our stellar neighborhood from a star-eating parasite called "Astrophage." PHM is a buddy movie in space in a way that The Martian didn't get to be, and the interaction between Grace and Rocky is the biggest reason to read the book. The pair makes a hell of a problem-solving team, jazz hands and fist bumps and all. But the relative ease with which Grace and Rocky understand each other got me thinking about the real-world issues that might arise when two beings from vastly different evolutionary backgrounds try to communicate...

The question I put to her was this: going by our current understanding of how and why human languages operate, do we think it would be practical—or even possible — for two divergently evolved sentient beings from different worlds to learn each other's languages well enough in a short amount of time (perhaps as little as a week) to usefully converse about abstract concepts and to be reasonably assured that both beings actually understand those abstracts...?
And the professor's response? We ended up blowing an entire hour on linguistics, and it was easily the coolest and nerdiest conversation I've had in a long time. Nearing the end, though, I asked Dr. Birner for her final take on whether or not the language acquisition exercise portrayed in Project Hail Mary would work.

Her consensus was "probably," but only given a number of extremely lucky — and extremely unlikely — coincidences in psychology and evolution (there's that anthropic principle of science fiction rearing its head!). If we can take it as a given that the alien is "friendly," and if we can also take it as a given that "friendship" in the alien's society carries along with it the same or a similar set of relationship expectations as it does for humans, and if we can take it as a given that the alien has similar emotional drivers, and if the alien values (or can at least intellectually conceive of) concepts like altruism and cooperation, and if the alien has a compatible sense of morality that places value on the lives of individuals and prioritizes the avoidance of death—if we can take all those things and more as givens, then things might work out.

"I think that given a theoretically infinite amount of time, probably yes," communication would be possible, she said. "As long as there's enough goodwill that you are going to be there together working together."
But in a long comment, long-time Slashdot reader shanen argues all sentient beings are basically Universal Turing Machines running mental programs in our heads, but still warns of "hardware-level incompatibilities not just at the level of sound systems, but in the kinds of programs that 'run sufficiently easily' in the more dissimilar Universal Turing Machines."

New research has discovered that monkeys will use the "accent" of another species when they enter its territory to help them better understand one another and potentially avoid conflict. Phys.Org reports: Published in the journal Behavioral Ecology and Sociobiology, the study is the first to show asymmetric call convergence in primates, meaning that one species chooses to adopt another species' call patterns to communicate. The study, co-authored by Dr. Jacob Dunn of Anglia Ruskin University (ARU), investigated the behavior of 15 groups of pied tamarins (Saguinus bicolor) and red-handed tamarins (Saguinus midas) in the Brazilian Amazon.

The researchers found that when groups of red-handed tamarins entered territory shared with pied tamarins, the red-handed tamarins adopted the long calls used by the pied tamarins. Red-handed tamarins have greater vocal flexibility and use calls more often than pied tamarins, and the scientists believe they might alter their calls to avoid territorial disputes over resources. "We found that only the red-handed tamarins change their calls to those of the pied tamarins, and this only happens in places where they occur together," [said lead author Tainara Sobroza, of the Instituto Nacional de Pesquisas da Amazonia.] "Why their calls converge in this way is not certain, but it is possibly to help with identification when defending territory or competing over resources."

A navigation timing error sent Nasa's Mars helicopter on a lurching ride, its first major problem since it took to the Martian skies last month. The Associated Press reports: The experimental helicopter, named Ingenuity, managed to land safely after the problem occurred, officials at the Jet Propulsion Laboratory said on Thursday. The trouble cropped up about a minute into the helicopter's sixth test flight on Saturday at an altitude of 10 meters (33ft). One of the numerous pictures taken by an onboard navigation camera did not register in the system, confusing the craft about its location. Ingenuity began tilting back and forth by as much as 20 degrees and suffered power consumption spikes, according to Havard Grip, the helicopter's chief pilot.

A built-in system to provide extra margin for stability "came to the rescue," he wrote in an online status update. The helicopter landed within five meters (16ft) of its intended touchdown site. Grip wrote: "Ingenuity muscled through the situation, and while the flight uncovered a timing vulnerability that will now have to be addressed, it also confirmed the robustness of the system in multiple ways. While we did not intentionally plan such a stressful flight, Nasa now has flight data probing the outer reaches of the helicopter's performance envelope."

The Canadian astronaut, who commanded the International Space Station and recorded the famous microgravity rendition of David Bowie's Space Oddity, on Sunday spit some fire at true believers who see a link between UFOs or UAPs (for "unidentified aerial phenomena" in the newish military parlance) and some sort of alien intelligence. From a report: "Obviously, I've seen countless things in the sky that I don't understand," Chris Hadfield, a former pilot for the Royal Canadian Air Force, said during a CBC Radio call-in show.

"But to see something in the sky that you don't understand and then to immediately conclude that it's intelligent life from another solar system is the height of foolishness and lack of logic." [...] Hadfield added that he does think it's likely there's life somewhere else in the universe. "But definitively up to this point, we have found no evidence of life anywhere except Earth," he said, "and we're looking."

Harvey Schlossberg, a former New York City traffic cop with a doctorate in psychology who choreographed what became a model law enforcement strategy for safely ending standoffs with hostage takers, died on May 21 in Brooklyn. He was 85. From a report: His death, at a hospital, was caused by cardiopulmonary arrest, said his wife, Dr. Antoinette Collarini Schlossberg. The need for a standard protocol for hostage situations became more pressing in 1971 after the botched rescue of guards during the Attica prison riots in upstate New York. The next year, captives were taken in a Brooklyn bank robbery (the inspiration behind the 1975 Al Pacino film "Dog Day Afternoon") and Israeli athletes were seized and massacred by Palestinian terrorists at the Munich Olympics. In a pioneering training film he made for the New York Police Department in 1973, Harvey Schlossberg said that in a hostage situation, police officers "all believed, 'If you gave me the right gun with the right bullet, I can put everybody out.'"

"But I don't think it works that easy," he said. "That's a Hollywood thing." Instead, he counseled patience and "crisis intervention therapy." Delaying tactics, he said, allowed more time for the criminals to make mistakes and, just as crucially, to develop a rapport with their victims, leaving the hostage-takers less likely to harm them. "Harvey faced an uphill battle getting cops to 'negotiate with killers,' because for 130 years the N.Y.P.D.'s official M.O. in barricade situations had been to issue ultimatums, throw in smoke and tear gas, and, if necessary storm the building," Chuck Wexler, executive director of the Police Executive Research Forum, a law enforcement think tank, said in an email. "Many lives were lost. Harvey changed that."

New submitter rundgong shares a report from the BBC: An international team of researchers has created the largest and most detailed map of the distribution of so-called dark matter in the Universe. The results are a surprise because they show that it is slightly smoother and more spread out than the current best theories predict. The observation appears to stray from Einstein's theory of general relativity -- posing a conundrum for researchers. The results have been published by the Dark Energy Survey Collaboration.

Using the Victor M Blanco telescope in Chile, the team behind the new work analyzed 100 million galaxies. The map shows how dark matter sprawls across the Universe. The black areas are vast areas of nothingness, called voids, where the laws of physics might be different. The bright areas are where dark matter is concentrated. They are called "halos" because right in the centre is where our reality exists. In their midst are galaxies like our own Milky Way, shining brightly like tiny gems on a vast cosmic web.

According to Dr Jeffrey, who is also part of a department at University College London, the map, clearly shows that galaxies are part of a larger invisible structure. "No one in the history of humanity has been able to look out into space and see where dark matter is to such an extent. Astronomers have been able to build pictures of small patches, but we have unveiled vast new swathes which show much more of its structure. For the first time we can see the Universe in a different way."

sciencehabit shares a report from Science Magazine: When Chris Mason's daughter was a toddler, he watched, intrigued, as she touched surfaces on the New York City subway. Then, one day, she licked a pole. "There was a clear microbial exchange," says Mason, a geneticist at Weill Cornell Medicine. "I desperately wanted to know what had happened." So he started swabbing the subway, sampling the microbial world that coexists with people in our transit systems. After his 2015 study revealed a wealth of previously unknown species in New York City, other researchers contacted him to contribute. Now, Mason and dozens of collaborators have released their study of subways, buses, elevated trains, and trams in 60 cities worldwide, from Baltimore to Bogota, Colombia, to Seoul, South Korea. They identified thousands of new viruses and bacteria, and found that each city has a unique microbial "fingerprint."

They found that about 45% didn't match any known species: Nearly 11,000 viruses and 1,302 bacteria were new to science. The researchers also found a set of 31 species present in 97% of the samples; these formed what they called a "core" urban microbiome. A further 1145 species were present in more than 70% of samples. Samples taken from surfaces that people touch -- like railings -- were more likely to have bacteria associated with human skin, compared with surfaces like windows. Other common species in the mix were bacteria often found in soil, water, air, and dust. But the researchers also found species that were less widespread. Those gave each city a unique microbiomeâ"and helped the researchers predict, with 88% accuracy, which city random samples came from, they report today in Cell.

The study's main value isn't in its findings (which are mapped here) so much as its open data, available at metagraph.ethz.ch, says Noah Fierer, a microbiologist at the University of Colorado, Boulder, who was not involved with the research. That will give other researchers the chance to delve into new questions. "Different cities have different microbial communities," Fierer says. "That's not super surprising. The question for me is, why?" Mason sees an opportunity for "awe and excitement about mass transit systems as a source of unexplored and phenomenal biodiversity." Newly discovered species have potential for drug research, he says, and wide-scale mapping and monitoring of urban microbiomes would be a boon for public health, helping researchers spot emerging pathogens early.

Hmmmmmm shares a report from The Telegraph: Scientists in Germany believe they have discovered why the Oxford-AstraZeneca and Johnson & Johnson coronavirus vaccines cause potentially fatal blood clots in rare cases, and claim the issue can be fixed with a minor adjustment. The authors of a new study claim their findings show that it is not the key component of the vaccines that cause the clotting, but a separate vector virus that is used to deliver them to the body (Warning: source paywalled; alternative source). Both the AstraZeneca and Johnson & Johnson jabs use a modified adenovirus, similar to the common cold virus, to deliver the spike protein of SarsCov2, the virus that causes Covid-19. The scientists claim the delivery mechanism means the spike protein is sent into the cell nucleus rather than the cellular fluid, where the virus usually generates proteins. In rare cases, they argue, parts of the spike protein can splice inside the nucleus, creating mutant versions which do not bind to the cell membrane where immunization takes place, but are secreted into the body, where they can cause blood clots.

These claims are only one of a number of hypotheses currently being explored on why the jabs cause blood clots in some people. A rival German study led by Prof Andreas Greinacher of Greifswald University Hospital claimed the clots were being caused by EDTA, a chemical used as a preservative in the AstraZeneca vaccine. In a two-step process, the vaccine can cause an overreaction by the immune system in some people which causes too many platelets to form in the blood, Prof Greinacher argues. EDTA can cause the cells in blood vessels to become "leaky," causing platelets and proteins to flood through the body, triggering a massive immune reaction that can cause the blood clots.

A third German study released in preprint this week by scientists at Ulm University Medical Centre claims to have found unusually high levels of proteins in the AstraZeneca vaccine which it is theorized could be behind the clots. "The often-observed strong clinical reaction one or two days after vaccination is likely associated with the detected protein impurities," the authors of the study wrote. The type of proteins involved "are known to affect innate and acquired immune responses and to intensify existing inflammatory reactions," Prof Stefan Kochanek, the study leader, said. "They have also been linked to autoimmune reactions."

Immunity to the coronavirus lasts at least a year, possibly a lifetime, improving over time especially after vaccination, according to two new studies. The findings may help put to rest lingering fears that protection against the virus will be short-lived. From a report: Together, the studies suggest that most people who have recovered from Covid-19 and who were later immunized will not need boosters. Vaccinated people who were never infected most likely will need the shots, however, as will a minority who were infected but did not produce a robust immune response. Both reports looked at people who had been exposed to the coronavirus about a year earlier. Cells that retain a memory of the virus persist in the bone marrow and may churn out antibodies whenever needed, according to one of the studies, published on Monday in the journal Nature. The other study, posted online at BioRxiv, a site for biology research, found that these so-called memory B cells continue to mature and strengthen for at least 12 months after the initial infection.

"The papers are consistent with the growing body of literature that suggests that immunity elicited by infection and vaccination for SARS-CoV-2 appears to be long-lived," said Scott Hensley, an immunologist at the University of Pennsylvania who was not involved in the research. The studies may soothe fears that immunity to the virus is transient, as is the case with coronaviruses that cause common colds. But those viruses change significantly every few years, Dr. Hensley said. "The reason we get infected with common coronaviruses repetitively throughout life might have much more to do with variation of these viruses rather than immunity," he said. In fact, memory B cells produced in response to infection with SARS-CoV-2 and enhanced with vaccination are so potent that they thwart even variants of the virus, negating the need for boosters, according to Michel Nussenzweig, an immunologist at Rockefeller University in New York who led the study on memory maturation.

Science is once again casting doubt on the notion that we could live to be nearly as old as the biblical Methuselah or Mel Brooks' 2,000-year-old man. From a report: New research research [PDF] from Singapore-base biotech company Gero looks at how well the human body bounces back from disease, accidents or just about anything else that puts stress on its systems. This basic resilience declines as people age, with an 80-year-old requiring three times as long to recover from stresses as a 40-year-old on average. This should make sense if you've ever known an elderly person who has taken a nasty fall. Recovery from such a spill can be lif- threatening for a particularly frail person, whereas a similar fall might put a person half as old out of commission for just a short time and teenagers might simply dust themselves off and keep going.

Extrapolate this decline further, and human body resilience is completely gone at some age between 120 and 150, according to new analysis performed by the researchers. In other words, at some point your body loses all ability to recover from pretty much any potential stressor. The researchers arrived at this conclusion by looking at health data for large groups from the US, the UK and Russia. They looked at blood cell counts as well as step counts recorded by wearables. As people experienced different stressors, fluctuations in blood cell and step counts showed that recovery time grew longer as individuals grew older. "Aging in humans exhibits universal features common to complex systems operating on the brink of disintegration," Peter Fedichev, co-founder and CEO of Gero, said in a statement.

Australians were among those lucky enough to see it on Wednesday evening, a rare astronomical event marked by a dazzling array of sunset colors like red and burnt orange: a "super blood moon." From a report: From Brazil to Alaska, California to Indonesia, people with the right view of the celestial phenomenon marveled as their moon, usually a predictable, pale, Swiss-cheese-like round in the sky, was transformed into a fierce, red giant. As one Twitter user, words failing, put it: "Man I'm in love with this urghhh." The striking display was the result of two simultaneous phenomena: a supermoon (when the moon lines up closer than normal to our planet and appears to be bigger than usual), combined with a total lunar eclipse, or blood moon (when the moon sits directly in the Earth's shadow and is struck by light filtered through the Earth's atmosphere).

"A little bit of sunlight skims the Earth's atmosphere," said Brad Tucker, an astrophysicist and cosmologist based at the Australian National University in Canberra, the country's capital. He said this creates the effect of "sunrise and sunset being projected onto the moon." Depending on your vantage point and the amount of dust, clouds and pollution in the atmosphere, Dr. Tucker added, the moon appears pink-orange or burned red or even a brown color. "A super poo moon doesn't really have the same ring," he said. Sky gazers in eastern Australia caught the eclipse beginning around 6:47 p.m. local time Wednesday, with it peaking by 9:18 p.m., while those in Los Angeles were to see the action beginning at 1:47 a.m. Pacific time. In Australia, some took to the skies on a special flight to see the supermoon. It left Sydney about 7:45 p.m. and was to return later that evening. Vanessa Moss, an astronomer with Australia's national science agency, CSIRO, and the guest expert on the flight, said this kind of phenomenon was exciting because it was accessible.

According to the Biden administration, half of the country's adults are now fully vaccinated against the coronavirus. NPR reports: "This is a major milestone in our country's vaccination efforts," Andy Slavitt, a White House senior adviser on the COVID-19 response, said during a midday briefing. "The number was 1% when we entered office Jan. 20." Nearly 130 million people age 18 and older have completed their vaccine regimens since the first doses were administered to the public in December, the Centers for Disease Control and Prevention said. Another 70 million vaccine doses are currently in the distribution pipeline, according to the agency.

The U.S. is pushing to add millions more people to the ranks of the vaccinated. President Biden said this month that his new goal is to administer at least one dose of a COVID-19 vaccine to 70% of U.S. adults by the Fourth of July. Nine states have given at least one vaccine shot to 70% of their adult population, Slavitt said at Tuesday's briefing. Acknowledging the welcome return to a more normal life taking place around the country, he urged more people to get the vaccine: "Unless you're vaccinated, you're at risk."

Who wants to be an astronaut? If the answer is you, there's a reality TV show, appropriately titled "Who Wants to Be an Astronaut?", that you ought to apply for. From a report: The Discovery Channel is seeking to cast about 10 would-be astronauts to compete during the series' eight-episode run next year for a seat on a real-life trip to the International Space Station, followed by live coverage of the launch of the winner on a SpaceX rocket. "We'd like a diverse group of people that each have their own story, why they want to go to space, why they're worthy of going to space, what their back story is," said Jay Peterson, president of Boat Rocker Studios, Unscripted, one of the companies producing the show for Discovery. That person will not be the only amateur astronaut destined for the space station next year. So many tourism and entertainment efforts are preparing trips there that it could begin to look more like a soundstage for television shows and a hotel for the wealthy than an orbiting research laboratory.

Many who work in the business of space believe that is a good thing, even if trips to orbit will remain out of reach of all but the wealthiest passengers in the near term. "This is a real inflection point, I think, with human spaceflight," Phil McAlister, NASA's director of commercial spaceflight development, said during a news conference this month announcing that the agency had signed an agreement with Axiom Space, a Houston-based company, to fly the first mission of private astronauts to the space station. "I'm very bullish on the tourism market and the tourism activity," Mr. McAlister said. "I think more people that are going to fly, they're going to want to do more things in space." Although the International Space Station may stay up in orbit at least until 2028, in the future it will not be only space station. Russian space authorities last month declared their intention to leave the I.S.S. in the coming years and build a station of their own. A Chinese orbital outpost is expected to come online in the next year or two.

So, what would it feel like to fall into a black hole? From a report: "Well, at the moment you crossed the horizon, you wouldn't feel anything -- there would be nothing dramatic," Peter Galison, co-founder of the Black Hole Initiative at Harvard University, says over the phone. Huh. Doesn't sound too bad. "But inevitably, you would be pulled towards the centre," he continues. "There's no going back; everything that falls into a black hole just keeps falling; there's no resisting that pull and things don't end well."

Ah. Go on. "Physicists have an expression called 'spaghettification' because if you were falling in feet first, your feet would be more attracted towards the centre than your head, and your sides would be pushed towards your middle and this process would extend and compress you." Right. So, terrifying, then. Especially when Galison adds with cosmic understatement: "In the long term that's not a good survival event." We are talking about his documentary film, Black Holes: The Edge of All We Know, four years in the making and available on Netflix from 1 June, which follows two scientific collaborations to understand the most mysterious objects in the universe. Among the highlights is being a fly on the wall as the late Stephen Hawking tries to figure them out.

It is Hawking's voice, that instantly recognisable computer speech synthesiser, that opens the film: "A black hole is stranger than anything dreamed up by science fiction writers. It's a region of space where gravity is so strong that nothing can escape. Once you are over the edge, there's no way back." City-sized black holes form when certain stars run out of fuel to burn and collapse under the force of their own gravity. Supermassive black holes -- millions or billions of times bigger than our sun -- are found at the centre of almost every galaxy including our own, the Milky Way.

Researchers from University of Copenhagen have investigated what happened to a specific kind of plasma -- the first matter ever to be present -- during the first microsecond of Big Bang. Their findings provide a piece of the puzzle to the evolution of the universe, as we know it today. Phys.org reports: "We have studied a substance called quark-gluon plasma that was the only matter, which existed during the first microsecond of Big Bang. Our results tell us a unique story of how the plasma evolved in the early stage of the universe," explains You Zhou, associate professor at the Niels Bohr Institute, University of Copenhagen. "First, the plasma that consisted of quarks and gluons was separated by the hot expansion of the universe. Then the pieces of quark reformed into so-called hadrons. A hadron with three quarks makes a proton, which is part of atomic cores. These cores are the building blocks that constitutes Earth, ourselves and the universe that surrounds us," he adds.

The quark-gluon plasma (QGP) was present in the first 0.000001 second of Big Bang, and thereafter, it disappeared due to the expansion. But by using the Large Hadron Collider at CERN, researchers were able to recreate this, the first matter in history, and trace back what happened to it. "In addition to using the Large Hadron Collider, the researchers also developed an algorithm that is able to analyze the collective expansion of more produced particles at once than ever possible before. Their results show that the QGP used to be a fluent liquid form and that it distinguishes itself from other matter by constantly changing its shape over time.

"For a long time, researchers thought that the plasma was a form of gas, but our analysis confirm the latest milestone measurement, where the Hadron Collider showed that QGP was fluent and had a smooth soft texture like water. The new details we provide show that the plasma has changed its shape over time, which is quite surprising and different from any other matter we know and what we would have expected," says You Zhou. Even though this might seem like a small detail, it brings physicists one step closer to solving the puzzle of the Big Bang and how the universe developed in the first microsecond, he elaborates. The study has been published in the journal Physics Letters B.

A group of Redditors came together in a bid to archive over 85 million scientific papers from the website Sci-Hub and make an open-source library that cannot be taken down. Interesting Engineering reports: Over the last decade or so, Sci-Hub, often referred to as "The Pirate Bay of Science," has been giving free access to a huge database of scientific papers that would otherwise be locked behind a paywall. Unsurprisingly, the website has been the target of multiple lawsuits, as well as an investigation from the United States Department of Justice. The site's Twitter account was also recently suspended under Twitter's counterfeit policy, and its founder, Alexandra Elbakyan, reported that the FBI gained access to her Apple accounts.

Now, Redditors from a subreddit called DataHoarder, which is aimed at archiving knowledge in the digital space, have come together to try to save the numerous papers available on the website. In a post on May 13, the moderators of r/DataHoarder, stated that "it's time we sent Elsevier and the USDOJ a clearer message about the fate of Sci-Hub and open science. We are the library, we do not get silenced, we do not shut down our computers, and we are many." This will be no easy task. Sci-Hub is home to over 85 million papers, totaling a staggering 77TB of data. The group of Redditors is currently recruiting for its archiving efforts and its stated goal is to have approximately 8,500 individuals torrenting the papers in order to download the entire library. Once that task is complete, the Redditors aim to release all of the downloaded data via a new "uncensorable" open-source website.