A reader shares some space news from OPB: A NASA spacecraft sent out to collect a sample of rock and dust from an asteroid has nabbed so much that it's created an unexpected problem. Rocks are jammed in the device in a way that's keeping a Mylar flap open, creating a gap that's letting some of the collected pebbles and dust drift out into space.

"We had a successful sample collection attempt — almost too successful. Material is escaping," says Dante Lauretta of the University of Arizona, the principal investigator for the OSIRIS-REx mission. "We think we're losing a small fraction of material, but it's more than I'm comfortable with. I was pretty concerned when I saw these images coming in." To prevent any further loss, the team is now preparing to stow the sample collection device quickly into its return capsule, possibly starting the stowing process as soon as Tuesday. The capsule is expected to return to Earth in 2023...

It's now looking like the collection device must have penetrated farther down into the asteroid's surface than expected — perhaps as deep as 48 centimeters, or about a foot and a half.
Maybe that's because new findings from mission "suggest that the interior of the asteroid Bennu could be weaker and less dense than its outer layers — like a crème-filled chocolate egg flying though space..." according to an article earlier this month in the news digest of the University of Colorado Boulder: The results appear in a study published in the journal Science Advances and led by the University of Colorado Boulder's OSIRIS-REx team, including professors Daniel Scheeres and Jay McMahon... Using OSIRIS-REx's own navigational instruments and other tools, the group spent nearly two years mapping out the ebbs and flows of Bennu's gravity field. Think of it like taking an X-ray of a chunk of space debris with an average width about the height of the Empire State Building. "If you can measure the gravity field with enough precision, that places hard constraints on where the mass is located, even if you can't see it directly," said Andrew French, a coauthor of the new study and a former graduate student at CU Boulder, now at NASA's Jet Propulsion Laboratory.

What the team has found may also spell trouble for Bennu. The asteroid's core appears to be weaker than its exterior, a fact that could put its survival at risk in the not-too-distant future. "You could imagine maybe in a million years or less the whole thing flying apart," said Scheeres, a distinguished professor in the Ann and H.J. Smead Department of Aerospace Engineering Sciences.

Kiuas writes: Researchers from the Technical University of Munich and the University of Helsinki have discovered a second receptor (called neuropilin-1) which is used by the SARS-CoV-2 virus to enter into human cells via the nasal cavity.

The discovery is important as it helps explain the rapid spread of the virus, and also helps define a potential target for antirviral intervention... The study itself was published in the Science magazine on the 20th of October.
More details announced by the University of Helsinki: "That SARS-CoV-2 uses the receptor ACE2 to infect our cells was known, but viruses often use multiple factors to maximize their infectious potential" says Dr. Giuseppe Balistreri, head of the research group Viral Cell Biology at the University of Helsinki involved in the study. "Unlike the main receptor ACE2, which is present in low levels, Neuropilin-1 is very abundant in the cells of the nasal cavity. This is a strategically important localization possibly contributing to the efficient infectivity of this new coronavirus, which has caused a major pandemic, spreading rapidly around the world", Balistreri explains...

By specifically blocking neuropilin-1 with antibodies, the researchers were able to significantly reduce infection in laboratory cell cultures. "If you think of ACE2 as a door lock to enter the cell, then neuropilin-1 could be a factor that directs the virus to the door. ACE2 is expressed at very low levels in most cells. Thus, it is not easy for the virus to find doors to enter. Other factors such as neuropilin-1 might help the virus finding its door", says Balistreri...

Balistreri cautiously concludes "it is currently too early to speculate whether blocking directly neuropilin could be a viable therapeutic approach, as this could lead to side effects. This will have to be looked at in future studies. Currently our laboratory is testing the effect of new molecules that we have specifically designed to interrupt the connection between the virus and neuropilin. Preliminary results are very promising and we hope to obtain validations in vivo in the near future."

Scientists at the Menlo Park, California-based SLAC National Accelerator Laboratory have taken the world's first 3,200-megapixel digital photos, using an advanced imaging device that's built to explore the universe. CNET reports: "We will measure and catalog something like 20 billion galaxies." said Steven Kahn, director of the Vera C. Rubin Observatory in Chile. That observatory is where the world's largest digital camera will become the centerpiece of a monumental effort to map the night sky. The camera will spend 10 years capturing the most detailed images of the universe ever taken.

The team working on the camera just completed the focal plane, which is an array of imaging sensors more than two feet wide. (The equivalent focal length on an iPhone 11 camera is 26 millimeters.) It took the team about six months to assemble the sensors, largely because the sensors can easily crack if they touch each other during the installation process. Since the camera isn't complete, scientists used a pinhole projector to test the focal plane. They snapped photos of an image of Vera C. Rubin (the late scientist the observatory is named for), the camera team, and a head of romanesco broccoli. CNET posted a video describing how scientists designed and built the focal plane.

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

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

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

The findings have been published in the Astrophysical Journal.

An anonymous reader quotes a report from NPR: Remember the "murder hornets"? You know, the terrifyingly large Asian giant hornets that are threatening to wipe out the North American bee population? Entomologists with the Washington State Department of Agriculture have now located a nest of them -- the first to be found in the U.S., the agency says. The nest was discovered in the cavity of a tree on a property in the city of Blaine, near the Canadian border.

This achievement closely follows another advance: State entomologists had recently had luck trapping the hornets. This week, they were able to collect four live Asian giant hornets using a new type of trap -- and managed to attach radio trackers to three of them. One of those tagged hornets led staffers to the nest. The plan now? Destroy the nest. The agency says it intends to eradicate it on Saturday, removing the tree if necessary. Asian giant hornets are an invasive pest that prey on honeybees and other insects. "Only a couple of hornets can slaughter an entire healthy honeybee hive in just a matter of a few hours," Sven-Erik Spichiger, chief entomologist for the state's agriculture department, told NPR last week.

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

Blooming algae was behind a recent mass death of sea animals that saw octopuses and seals wash up on the shore off a Russian peninsula, scientists said on Friday in the final conclusion to their probe. From a report: Locals in Kamchatka, a volcanic peninsula in Russia's Far East, raised the alarm in September after the animals were found dead and surfers complained of stinging eyes. Scientists later said that up to 95 percent of marine life living along the seabed in the affected area had died. Environmental campaigners said they were conducting their own inquiries and were not yet able to confirm the official probe's findings. Andrei Adrianov, vice president of Russia's Academy of Sciences, announced the probe's conclusions on Friday, saying the mass death was due to the effects of toxins from single-cell algae. Speaking at the same meeting, Svetlana Radionova of environmental watchdog Rosprirodnadzor said her agency conducted over 5,000 tests. She said the agency did not see a way the situation could have been caused by humans. In a separate criminal probe, investigators announced they had eliminated oil spills and toxic waste as possible causes. They added that the previously reported high levels of phenol and petroleum products were "not critical" and had been observed in the bay for decades.

An anonymous reader quotes a report from IEEE Spectrum: New circuits can get printed directly on human skin to help monitor vital signs, a new study finds. In the new study, researchers developed a way to sinter nanoparticles of silver at room temperature. The key behind this advance is a so-called a sintering aid layer, consisting of a biodegradable polymer paste and additives such as titanium dioxide or calcium carbonate. Positive electrical charges in the sintering aid layer neutralized the negative electrical charges the silver nanoparticles could accumulate from other compounds in their ink. This meant it took less energy for the silver nanoparticles printed on top of the sintering aid layer to come together, says study senior author Huanyu Cheng, a mechanical engineer at Pennsylvania State University.

The sintering aid layer also created a smooth base for circuits printed on top of it. This in turn improved the performance of these circuits in the face of bending, folding, twisting and wrinkling. In experiments, the scientists placed the silver nanoparticle circuit designs and the sintering aid layer onto a wooden stamp, which they pressed onto the back of a human hand. They next used a hair dryer set to cool to evaporate the solvent in the ink. A hot shower could easily remove these circuits without damaging the underlying skin. After the circuits sintered, they could help the researchers measure body temperature, skin moisture, blood oxygen, heart rate, respiration rate, blood pressure and bodily electrical signals such as electrocardiogram (ECG or EKG) readings. The data from these sensors were comparable to or better than those measured using conventional commercial sensors that were simply stuck onto the skin, Cheng says. The findings have been published in the journal Applied Materials & Interfaces.

The Food and Drug Administration on Thursday approved Gilead Sciences' antiviral drug remdesivir as a treatment for the coronavirus. From a report: In May, the FDA granted the drug an emergency use authorization, allowing hospitals and doctors to use the drug on patients hospitalized with the disease even though the drug has not been formally approved by the agency. The intravenous drug has helped shorten the recovery time of some hospitalized Covid-19 patients. It was one of the drugs used to treat President Donald Trump, who tested positive for the virus earlier this month. Earlier in the year, Dr. Anthony Fauci, the nation's leading infectious disease expert, said the drug would set "a new standard of care" for Covid-19 patients. The drug will be used for Covid-19 patients requiring hospitalization, Gilead said. Remdesivir is now the first and only fully approved treatment in the U.S. for Covid-19, which has infected more than 41.3 million and killed more than 1 million, according to data compiled by Johns Hopkins University.

You may have noticed a rash of provocative headlines this week suggesting that mouthwash can "inactivate" coronaviruses and help curb their spread. While the news is based on a new study from researchers at the Penn State College of Medicine, it's important to note that the study focused on a coronavirus that causes common colds -- not the one that causes COVID-19. "Not only did the study not investigate this deadly new virus, but it also did not test whether mouthwash affects how viruses spread from person to person," adds Katherine J. Wu via The New York Times. From the report: "I don't have a problem with using Listerine," said Angela Rasmussen, a virologist at Columbia University. "But it's not an antiviral." The study, which was published last month in the Journal of Medical Virology, looked only at a coronavirus called 229E that causes common colds -- not the new coronavirus, which goes by the formal name of SARS-CoV-2, and causes far more serious disease. Researchers can study SARS-CoV-2 only in high-security labs after undergoing rigorous training. The two viruses are in the same family, and, in broad strokes, look anatomically similar, which can make 229E a good proxy for SARS-CoV-2 in certain experiments. But the two viruses shouldn't be thought of as interchangeable, Dr. Rasmussen said.

The researchers tested the virus-destroying effects of several products, including a watered-down mixture of Johnson's baby shampoo -- which is sometimes used to flush out the inside of the nose -- and mouthwashes made by Listerine, Crest, Orajel, Equate and C.V.S. They flooded 229E coronaviruses, which had been grown in human liver cells in the lab, with these chemicals for 30 seconds, 1 minute or 2 minutes -- longer than the typical swig or spritz into a nose or mouth. Around 90 to 99 percent of the viruses could no longer infect cells after this exposure, the study found.

But because the study didn't recruit any human volunteers to gargle the products in question, the findings have limited value for the real world, other experts said. The human mouth, full of nooks and crannies and a slurry of chemicals secreted by a diverse cadre of cells, is far more complicated than the inside of a laboratory dish. Nothing should be considered conclusive "unless human studies are performed," said Dr. Maricar Malinis, an infectious disease expert at Yale University. [...] Even if people did a very thorough job coating the inside of their mouths or noses with a coronavirus-killing chemical, a substantial amount of the virus would still remain in the body. The new coronavirus infiltrates not only the mouth and nose, but also the deep throat and lungs, where mouthwash and nasal washes hopefully never enter. Viruses that have already hidden away inside cells will also be shielded from the fast-acting chemicals found in these products.

fahrbot-bot shares a report from Gizmodo: The diabolical ironclad beetle, in addition to having one of the coolest names in the animal kingdom, boasts one of the toughest natural exoskeletons. A team of scientists has finally figured out the secret behind this extra durable armor and how these insects can survive getting run over by a car.

As wise people often say, a reed that bends in the wind is stronger than a mighty tree that breaks during a storm. New research published today in Nature suggests the diabolical ironclad beetle (Phloeodes diabolicus) is an adherent of these sage words. Their exoskeletons are extra tough, but when the pressure literally gets to be too much, their protective shells take on an elastic quality that results in a kind of stretching rather than breaking. The scientists who made this discovery -- a team from Purdue University and the University of California-Irvine -- say the unique strategy employed by the diabolical ironclad beetle could inspire the creation of innovative materials, namely components capable of dissipating energy to prevent catastrophic breakage. According to the experiments, diabolical ironclad beetles can withstand an applied force of 150 newtons, which is 39,000 times its body weight. "If we were to compare this to humans (not a great example, given the vastly different scales involved, but fun nonetheless), that would require a 200-pound person to endure the crush of 7.8 million pounds," the report says.

"A tire passing overhead would inflict 100 newtons of force, which explains how these beetles can survive run-ins with cars. The researchers say other beetle species can't handle even half of this load."

James Randi, a Canadian-American stage magician and scientific skeptic who extensively challenged paranormal and pseudoscientific claims, has passed away Tuesday "due to age-related causes." He was 92. Slashdot reader trinarybit first shared the news. The Washington Post reports: An inveterate skeptic and bristly contrarian in his profession, Mr. Randi insisted that magic is based solely on earthly sleight of hand and visual trickery. He scorned fellow magicians who allowed or encouraged audiences to believe their work was rooted in extrasensory or paranormal powers. In contrast, the bearded, gnomish Mr. Randi cheerfully described himself as a "liar" and "cheat" in mock recognition of his magician's skills at duping people into thinking they had seen something inexplicable -- such as a person appearing to be cut in half with a saw -- when it was, in fact, the result of simple physical deception. He was equally dismissive of psychics, seers and soothsayers. Still, he was always careful to describe himself as an investigator, not a debunker, and insisted he was always open to the possibility of supernatural phenomena but simply found no evidence of it after decades of research.

To put his money where his mouth was, Mr. Randi and the research organization he helped found in 1976, the Committee for the Scientific Investigation of Claims of the Paranormal, offered payouts ranging up to $1 million to anyone who could demonstrate a supernatural or paranormal phenomenon under mutually agreed, scientifically controlled conditions. While he had many takers, he said, none of them earned a cent. Randi was featured in a handful of Slashdot stories over the years, including a two-part interview where he answered your questions.

New submitter Orolo shares a report from ScienceAlert: Medical researchers have made a surprise anatomical discovery, finding what looks to be a mysterious set of salivary glands hidden inside the human head -- which somehow have been missed by scientists for centuries up until now. This "unknown entity" was identified by accident by doctors in the Netherlands, who were examining prostate cancer patients with an advanced type of scan called PSMA PET/CT. When paired with injections of radioactive glucose, this diagnostic tool highlights tumors in the body. In this case, however, it showed up something else entirely, nestled in the rear of the nasopharynx, and quite the long-time lurker.

As for how the glands haven't previously been identified, the researchers suggest the structures are found at a poorly accessible anatomical location under the skull base, making them hard to make out endoscopically. It's possible duct openings could have been noticed, they say, but might not have been noticed for what they are, being part of a larger gland system. While the team concedes that additional research on a larger, more diverse cohort will be needed to validate their findings, they say the discovery gives us another target to avoid during radiation treatments for patients with cancer, as salivary glands are highly susceptible to damage from the therapy. The findings are reported in Radiotherapy and Oncology.

An anonymous reader quotes a report from Bloomberg: Millions of workers in recent months have returned to offices outfitted with new pandemic protocols meant to keep them healthy and safe. But temperature checks and plexiglass barriers between desks can't prevent one of the most dangerous workplace behaviors for the spread of Covid-19 -- the irresistible desire to mingle. "If you have people coming into the office, it's very rare for them consistently to be six feet apart," said Kanav Dhir, the head of product at VergeSense, a company that has 30,000 object-recognition sensors deployed in office buildings around the world tracking worker whereabouts.

Since the worldwide coronavirus outbreak, the company has found that 60% of interactions among North American workers violate the U.S. Centers for Disease Control and Prevention's six-foot distancing guidelines, as do an even higher share in Asia, where offices usually are smaller. [...] For those employers pushing ahead with a return to the office, sensors that measure room occupancy are proving to be a necessity, said Doug Stewart, co-head of digital buildings at the technology unit Cushman & Wakefield, which manages about 785-million-square feet of commercial space in North and South America. Most offices are already fitted with sensors of some kind, even if it's just a badging system or security cameras. Those lagging on such capabilities are now scrambling to add more, he said. The systems were used before the pandemic to jam as many people together in the most cost-effective way, not limit workplace crowding or keep employees away from each other, Stewart said. With that in mind, companies can analyze the data all they want, but changing human behavior -- we're social creatures, after all -- is harder, he said.

Understanding worker habits is more useful if you have a way to nudge them into new patterns. Since the pandemic began, Radiant RFID LLC has sold 10,000 wristbands that vibrate when co-workers are too close to each other. The technology was originally designed to warn workers away from dangerous machinery, not other people. So far, the wristbands are responsible for reducing unsafe contacts by about 65%, said Kenneth Ratton, chief executive of the company, which makes radio-communication devices. At this point, the data on more than 3 billion encounters shows the average worker has had about 300 interactions closer than six feet lasting 10 minutes or more. Nadia Diwas is using another kind of technology: a wireless key fob she carries in her pocket made by her employer, Semtech Corp., which tracks her movements and interactions -- making it useful for contact tracing if someone gets sick, which is as important as warning people they are too close. The technology originally was developed by Semtech to help devices such as thermostats communicate on the so-called internet of things.

NASA's Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) sample return spacecraft has successfully touched the asteroid Bennu and collected a 2-oz sample of its surface. New Atlas reports: Launched atop an Atlas/Centaur booster from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida on September 8, 2016 at 7:05 pm EDT, the robotic OSIRIS-REx probe spent four years matching orbits to rendezvous with Bennu before making a detailed survey of the body's surface to find a safe area of scientific interest. Because Bennu is 205 million miles (330 million km) from Earth, it takes a radio signal 18 minutes to reach the spacecraft from mission control, so today's Touch-And-Go (TAG) maneuver was carried out under completely autonomous control by the onboard computer, relying on updated instructions from NASA engineers.

During the approach, the robotic arm called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM) was deployed with its disk-shaped sample collection head forward and the solar panels angled back to avoid accidental contact with the asteroid. The spacecraft then slowly approached the 26-ft (8-m) diameter "Nightingale" landing site from its normal orbit altitude of 2,500 ft (770 m) using its Natural Feature Tracking system to make a safe approach and then pull back from Bennu before a collision could occur. When the arm made contact with the asteroid surface for about 15 seconds, a blast of nitrogen gas dislodged a small, carbon-rich sample of pebbles and soil, which were collected by the sampler head and then stowed. If it turns out that insufficient material is recovered, the spacecraft will try again at a different area in January 2021. Otherwise, the current sample will be placed in a return capsule and in March 2021, OSIRIS-REx will depart from Bennu and begin its journey back to Earth.

The sample return capsule will separate from the mothership in September 2023, reenter the Earth's atmosphere to land at the Utah Test and Training Range for collection and be transferred to NASA's Johnson Space Flight Center in Houston for storage and distribution to select research teams.

Imagine parallel parking a 15-passenger van into just two to three parking spaces surrounded by two-story boulders. On Oct. 20, a University of Arizona-led NASA mission 16 years in the making will attempt the astronomical equivalent more than 200 million miles away. A NASA mission called OSIRIS-REx will soon attempt to touch the surface of an asteroid and collect loose rubble. bobbied writes: OSIRIS-REx is the United States' first asteroid sample return mission, aiming to collect and carry a pristine, unaltered sample from an asteroid back to Earth for scientific study. The spacecraft will attempt to touch the surface of the asteroid Bennu, which is hurtling through space at 63,000 miles per hour. If all goes according to plan, the spacecraft will deploy an 11-foot-long robotic arm called TAGSAM -- Touch-and-Go Sample Acquisition Mechanism -- and spend about 10 seconds collecting at least two ounces of loose rubble from the asteroid. The spacecraft, monitored remotely by a team of scientists and engineers, will then stow away the sample and begin its return to Earth, scheduled for 2023. You can watch this sample collection "Touch-And-Go" maneuver Oct. 20 at 5 p.m. EDT/ 2 p.m. PDT on NASA Television and the agency's website. As senior vice president for research and innovation at UArizona and a mechanical engineer with a long career in space systems engineering, I believe this milestone for OSIRIS-REx captures perfectly the spirit of research and innovation, the careful balance of problem-solving and perseverance, of obstacle and opportunity.

From a report: There's a myriad of reasons to replace cow's milk with alternatives like nut milks, oat milk, or soy milk, but for those who enjoy the experience of consuming animal-sourced dairy products, the alternatives just aren't the same. So Impossible Foods, makers of the Impossible Burger and other plant-based meat alternatives, are working on another food replacement that looks, tastes, and behaves like cow's milk. During a virtual press conference this morning where Impossible Foods revealed it was doubling the size of its Silicon Valley-based research and development team over the next year while also launching what it calls the "Impossible Investigator project" to entice leading scientists to contribute to its cause, the company also gave the world its first look at its new plant-based cow's milk alternative that hasn't yet been dubbed with a catchy marketing name. (Although you can probably safely assume that Impossible Milk is an option being considered.) Like the company's flagship Impossible Burgers, Impossible Foods' new milk alternative is made with stable proteins sourced from plants. The idea is that it not only properly mixes with other liquids (like hot coffee) without forming precipitates that can alter the texture and drinking experience, but that it can also be whipped into a foam and used as an ingredient in other food products without having to modify a recipe as is often required with other substitutes.

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

As Voyager 2 moves farther and farther from the Sun, the density of space is increasing. "It's not the first time this density increase has been detected," notes SciencAlert. "Voyager 1, which entered interstellar space in 2012, detected a similar density gradient at a separate location." From the report: Voyager 2's new data show that not only was Voyager 1's detection legit, but that the increase in density may be a large-scale feature of the very local interstellar medium (VLIM). The Solar System's edge can be defined by a few different boundaries, but the one crossed by the Voyager probes is known as the heliopause, and it's defined by the solar wind.
[...]
One theory is that the interstellar magnetic field lines become stronger as they drape over the heliopause. This could generate an electromagnetic ion cyclotron instability that depletes the plasma from the draping region. Voyager 2 did detect a stronger magnetic field than expected when it crossed the heliopause. Another theory is that material blown by the interstellar wind should slow as it reaches the heliopause, causing a sort of traffic jam. This has possibly been detected by outer Solar System probe New Horizons, which in 2018 picked up the faint ultraviolet glow resulting from a buildup of neutral hydrogen at the heliopause. It's also possible that both explanations play a role. Future measurements taken by both Voyager probes as they continue their journey out into interstellar space could help figure it out. But that might be a long bet to take. The findings have been published in The Astrophysical Journal Letters.

Researchers from Australia have discovered that the widely acclaimed mineral perovskite can be used to transform the solar industry through cheaper and more efficient photovoltaics. The Independent reports: Perovskite, which is forged deep within the Earth's mantle, has been hailed for its unprecedented potential to convert sunlight into electricity. Researchers have already improved its sunlight-to-energy efficiency from around 3 per cent to over 20 per cent in the space of just a few years. "It's unbelievable, a miracle material," Z. Valy Vardeny, a materials science professor from the University of Utah, said about perovskite in 2017. At the time it was thought that it would be at least 10 years before it reached a point that the material could be used in commercial solar cells, however the latest breakthrough could see the wide uptake of the technology much sooner. "It was one of those unusual discoveries that you sometimes hear about in science," said Dr Hall from the University of Melbourne.

With the help of researchers at the University of Sydney, the scientists were able to use computational modeling to solve the problem of instability within the material when exposed to sunlight. The unlikely solution was to undo the disruption caused by light at lower intensities by focussing the light into a high-intensity beam. Dr Hall added: "What we've shown is that you can actually use the material in the state that you want to use it, for a solar cell - all you need to do is focus more light onto it." The research could also have significant implications for data storage, with perovskites offering a way to dramatically increase a device's potential capacity. The study has been published in the journal Nature Materials.