A retired Technical Fellow from Rockwell Collins "released a 65-page paper that details an easy-to-understand, relatively inexpensive, and feasible plan to turn an asteroid into a space habitat," reports Universe Today (in an article republished at Science Alert): Dr. David W. Jensen breaks the discussion into three main categories — asteroid selection, habitat style selection, and mission strategy to get there (i.e., what robots to use)... He eventually settled on a torus as the ideal habitat type and then dives into calculations about the overall station mass, how to support the inner wall with massive columns, and how to allocate floor space.

All important, but how exactly would we build such a massive behemoth? Self-replicating robots are Dr. Jensen's answer. The report's third section details a plan to utilize spider robots and a base station that can replicate themselves. He stresses the importance of only sending the most advanced technical components from Earth and using materials on the asteroid itself to build everything else, from rock grinders to solar panels...

With admittedly "back-of-the-envelope" calculations, Dr. Jensen estimates that the program would cost only $4.1 billion. That is far less than the $93 billion NASA plans to spend on the Apollo program. And the result would be a space habitat that provides 1 billion square meters of land that didn't exist before. That's a total cost of $4.10 per square meter to build land — in space. Possibly even more impressive is the timeline — Dr. Jensen estimates that the entire construction project could be done in as little as 12 years. However, it will still take longer to fill the habitat with air and water and start regulating its temperature.

Science magazine reports: Researchers have shown how to conduct thousands of rapid molecular screenings simultaneously, using light to identify target molecules snared on top of an array of tiny silicon blocks. In theory, the tool could be used to spot 160,000 different molecules in a single square centimeter of space. Developed to spot gene fragments from the SARS-CoV-2 virus and other infectious organisms, the technology should also be able to identify protein markers of cancer and small molecules flagging toxic threats in the environment...

"[P]revious sensors have not been able to detect a wide range of target molecules," from very low to very high abundance, says Jennifer Dionne, an applied physicist at Stanford University. In hopes of getting around these problems, Dionne and her colleagues turned to an optical detection approach that relies on metasurfaces, arrays of tiny silicon boxes — each roughly 500 nanometers high, 600 nanometers long, and 160 nanometers wide — that focus near-infrared light on their top surface. This focusing makes it easy for a simple optical microscope to detect the shift in the wavelength of light coming from each silicon block, which varies depending on what molecules sit on top...

[T]he technique could allow doctors to detect viral infections without first having to amplify the genetic material from a patient, Dionne says. Perhaps as important, she notes, an array can be designed to reveal how much target DNA has bound, making it possible to detect in minutes not just whether a particular virus is present, but how intense the infection is. Such information could help doctors tailor their treatments. Current tests can also do this, but they normally take several hours to amplify the genetic material and quantify the results.

Dionne and her colleagues have formed a company called Pumpkinseed Bio to commercialize their new detectors, specifically aimed at detecting minute levels of proteins and other molecules that can't readily be amplified to make them easier to detect. And because only a small number of silicon blocks would be needed to spot individual target molecules, researchers should be able to craft arrays to track a multitude of disease biomarkers simultaneously. "We hope to look at many disease states at the same time," says Jack Hu, a former graduate student in Dionne's lab and head of the new startup. "That's the vision."
Thanks to Slashdot reader sciencehabit for sharing the article.

A UCLA-led study of NASA's DART mission found that the collision launched a cloud of boulders from its surface. "The boulder swarm is like a cloud of shrapnel expanding from a hand grenade," said Jewitt, lead author of the study and a UCLA professor of earth and planetary sciences. "Because those big boulders basically share the speed of the targeted asteroid, they're capable of doing their own damage." From a news release: In September 2022, NASA deliberately slammed a spacecraft into the asteroid Dimorphos to knock it slightly off course. NASA's objective was to evaluate whether the strategy could be used to protect Earth in the event that an asteroid was headed toward our planet. Jewitt said that given the high speed of a typical impact, a 15-foot boulder hitting Earth would deliver as much energy as the atomic bomb that was dropped on Hiroshima. Fortunately, neither Dimorphos nor the boulder swarm have ever posed any danger to Earth. NASA chose Dimorphos because it was about 6 million miles from Earth and measured just 581 feet across -- close enough to be of interest and small enough, engineers reasoned, that the half-ton Double Asteroid Redirection Test, or DART, planetary defense spacecraft would be able to change the asteroid's trajectory.

When it hurtled into Dimorphos at 13,000 miles per hour, DART slowed Dimorphos' orbit around its twin asteroid, Didymos, by a few millimeters per second. But, according to images taken by NASA's Hubble Space Telescope, the collision also shook off 37 boulders, each measuring from 3 to 22 feet across. None of the boulders is on a course to hit Earth, but if rubble from a future asteroid deflection were to reach our planet, Jewitt said, they'd hit at the same speed the asteroid was traveling -- fast enough to cause tremendous damage. The research, published in the Astrophysical Journal Letters, found that the rocks were likely knocked off the surface by the shock of the impact. A close-up photograph taken by DART just two seconds before the collision shows a similar number of boulders sitting on the asteroid's surface -- and of similar sizes and shapes -- to the ones that were imaged by the Hubble telescope. The boulders that the scientists studied, among the faintest objects ever seen within the solar system, are observable in detail thanks to the powerful Hubble telescope.

Russia has successfully launched Luna 25, the country's first lunar lander in 47 years. From a report: The uncrewed spacecraft lifted off from the Vostochny Cosmodrome in Amur Oblast, Russia. Hitching a ride aboard a Soyuz-2 Fregat rocket, Luna 25 took flight at 8:10 a.m. local time Friday, or 7:10 p.m. ET Thursday. Residents of a Russian village were temporarily evacuated Friday morning since there is a "one in a million chance" that one of Luna 25's rocket stages could fall there, according to Reuters.

The spacecraft is expected to first enter an orbit around Earth before transferring to a lunar orbit and ultimately descending to the surface of the moon. Russia's last lunar lander, Luna 24, landed on the moon on August 18, 1976. Luna 25 and India's Chandrayaan-3 mission, which launched in mid-July, are both expected to land at the lunar south pole on August 23, and it's a race to see which country will land first, according to Reuters. But Roscomos said the two missions are not expected to cause a problem for each other because their specific landing zones differ, Reuters reported.

An anonymous reader quotes a report from The Guardian: Virgin Galactic's VSS Unity, the reusable rocket-powered space plane carrying the company's first crew of tourists to space, successfully launched and landed on Thursday. The mission, known as Galactic 02, took off shortly after 11am ET from Spaceport America in New Mexico. Aboard the spacecraft were six individuals total -- the space plane's commander and former Nasa astronaut CJ Sturckow, the pilot Kelly Latimer, as well as Beth Moses, Virgin Galactic's chief astronaut instructor who trained the crew before to the flight. The spacecraft also carried three private passengers, including the health and wellness coach Keisha Schahaff and her 18-year-old daughter, Anastasia Mayers, both of whom are Antiguan. [...]

Galactic 02 is a suborbital flight. However, despite VSS Unity not reaching orbit, the trajectory allows passengers to experience several minutes of weightlessness at an altitude high enough for them to see the Earth's curvature, Space.com explains. Following liftoff, Virgin Galactic's carrier plane VMS Eve transported VSS Unity to an altitude of about 44,300ft. Eve then dropped Unity which then fired its own rocket motor and ascended to suborbital space. Passengers aboard experienced approximately 3Gs. Live footage inside the spacecraft showed the passengers unstrapping themselves from their seats and peering out down to earth through the windows as they floated throughout the spacecraft.

Despite Galactic 02 being Virgin Galactic's second commercial spaceflight mission, it is the first flight to carry private customers. In June, Galactic 01 carried three crew members from the Italian air force and the National Research Council of Italy. According to Virgin Galactic, the company has already booked a backlog of about 800 customers. Tickets have ranged from $250,000 to $450,000. Galactic 03, the company's third commercial spaceflight, is planned for September.

Russia hopes to launch its first successful lunar landing mission for nearly 50 years, with a long-delayed takeoff from the far east of the country scheduled for early on Friday morning that the Kremlin aims to tout as a new achievement in space exploration. From a report: The Luna-25 mission will seek to land near the south pole of the moon, collecting geological samples from the area, and sending back data for signs of water or its building blocks, which could raise the possibility of a future human colony on the moon. But the more immediate goal is to prove that Russia still can launch a lunar landing mission after numerous failures in the past, generations of turnover among its scientific experts, delays due to sanctions and now isolation due to its war in Ukraine.

Post-Soviet Russia has launched two failed space landing missions, the Mars-96 in 1996 and Phobos-Grunt in 2011, both of which crash-landed into the Pacific Ocean. "The Russian Federation hasn't had much luck with launching unmanned interplanetary probes," said Vitaly Egorov, a blogger who writes extensively on space exploration. "Now 12 years later they're launching Luna-25 and the main intrigue is whether or not it will succeed in reaching [the moon] or not, and if it does, can it actually land there? "One of the main goals is to let modern specialists put down space probes softly on celestial objects. They haven't had that experience in 47 years. That knowledge needs to be restored for new specialists on a new technological level."

A scientist has observed a "gravitational anomaly" in certain star systems that could potentially upend a fundamental assumption about the universe, according to a new study. Motherboard reports: Kyu-Hyun Chae, an astronomer at Sejong University, has now put these models to the test by analyzing the accelerations of stars in 26,500 wide binaries located within about 650 light years of Earth using imagery captured by the European Space Agency's Gaia observatory. Scientists have previously searched for signs of modified gravity in these systems, but Chae took the next step by developing a new code that could account for special details, like the occurrence rate of so-called "nested" binaries in which the loosely orbiting stars also have close stellar companions. The new data suggests that when the gravitational accelerations of these stars slip below one nanometer per second squared, they begin to move in ways that are more aligned with MOND models than by the standard model. Chae said the findings offer "direct evidence for the breakdown of standard gravity at weak acceleration" and reveal "an immovable anomaly of gravity in favor of MOND-based modified gravity," according to a recent study published in The Astrophysical Journal.

In the new study, Chae reports what he calls "clear evidence" that the movements of binaries at points of weak acceleration seem to sync up with a particular MOND prediction known as AQUAL, according to the study. This discovery suggests that the standard view of gravity cannot account for these motions at low accelerations, which may inspire scientists to rethink aspects of Newton's inverse square law of gravity and Einstein's general relativity, as well as the necessity of dark matter. "Because a large amount of dark matter -- six times the baryonic or ordinary matter based on the standard model -- was required by assuming that general relativity was valid in the low acceleration limit, such a need for a large amount of dark matter is no longer valid," Chae explained. "This does not necessarily preclude the possibility that new particles, such as sterile neutrinos, could not be found. But, it is clear that there is no need for as much dark matter as required by general relativity." "When the results started to show up from my new and more reliable code, my initial reaction was that it was unbelievable," Chae said in an email to Motherboard. "I was feeling like I was dreaming. It seemed so unreal. This is because my results did not match any previous results."

"Several previous results even claimed that the standard gravity was preferred by wide binaries data including Gaia DR3. One group has been claiming an anomaly for some time, but the anomaly seemed not to match well the predictions of existing modified gravity theories. However, those previous studies did not self-calibrate or fully take into account the amount of hidden nested binaries."

Saudi Arabia has announced its plans to standardise charging ports for all electronic devices to USB-C connectors. From a report: The decision will be put into effect from January 1, 2025 (for all except portable computers or laptops). It was announced by the Saudi Standards, Metrology and Quality Organization and the Communications, Space and Technology Commission. The standardisation is set to happen in two stages. The first stage (from January 1, 2025) will cover mobile phones and other electronic devices such as headphones, keyboards, speakers, routers, etc. The second stage, (from April 1, 2026) will apply to laptops and portable computers. According to the authorities, the decision has been taken to improve user experience and reduce costs.

During its 54th flight on Mars, NASA's helicopter Ingenuity captured an image of the space agency's Perseverance rover. Space.com reports: Perseverance is nearly out of frame at the top of the photo, which Ingenuity took when it was about 16 feet (5 meters) above the red dirt. Unlike previous sorties, the Aug. 3 flight wasn't a scouting run to aid Perseverance's science activities. It lasted just 24 seconds, reached a maximum altitude of 16 feet and covered no ground laterally, according to Ingenuity's flight log. The mission team designed this short and simple hop in an attempt to help understand what happened during Ingenuity's previous flight, which was cut short unexpectedly.

The mission team designed this short and simple hop in an attempt to help understand what happened during Ingenuity's previous flight, which was cut short unexpectedly. That July 22 sortie was supposed to last 136 seconds and feature several complicated maneuvers. However, Ingenuity stayed aloft for just 74 seconds, touching down after something triggered its "flight-contingency program." [...] Imagery from Ingenuity's navigation camera likely got out of sync with its inertial measurement unit, which helps the little chopper determine its position, speed and orientation. This also happened near the end of Ingenuity's sixth flight, back in May 2021. The mission team soon uploaded a software patch to deal with the issue, but that patch apparently couldn't handle what happened on Flight 53, NASA officials said in the statement. "Since the very first flight, we have included a program called 'LAND_NOW' that was designed to put the helicopter on the surface as soon as possible if any one of a few dozen off-nominal scenarios was encountered," Teddy Tzanetos, Ingenuity team lead emeritus at NASA's Jet Propulsion Laboratory in Southern California, said in a statement.

"During Flight 53, we encountered one of these, and the helicopter worked as planned and executed an immediate landing," Tzanetos added.

Amazon is the most successful manufacturer of Arm server chips, accounting for just over half of Arm-based server CPUs currently deployed, while some chipmakers are also now betting on Arm-based Windows PCs. From a report: This information comes from a report issued by Bernstein Research which estimates that nearly 10 percent of servers across the world contain Arm processors, and 40 percent of those are located in China, as we reported earlier. But that total is beaten by just one company -- Amazon -- which has slightly above 50 percent of all Arm server CPUs in the world deployed in its Amazon Web Services (AWS) datacenters, said the analyst.

Amazon currently uses its own Graviton family of chips, designed by the Annapurna Labs division of Amazon Web Services and introduced to the world back in 2018, which are for its own internal use only. The latest iteration is the Graviton3E for high-performance computing applications, introduced towards the end of 2022. According to Bernstein, because these chips were optimized for the specific needs of AWS, the company is able to fit in more cores per socket or per rack and the chips consume less power, translating to lower spending on space and cooling.

Long-time Slashdot reader William Robinson shares a report from the BBC: India's space agency has released the first images of the Moon taken by the Chandrayaan-3 spacecraft, which entered lunar orbit on Saturday. The images show craters on lunar surface getting larger and larger as the spacecraft draws closer. Chandrayaan-3's lander and rover are due to reach the surface on August 23. If successful, India will be the first country to perform a controlled "soft landing" near the south pole. It will also become only the fourth to achieve a soft landing on the Moon after the US, the former Soviet Union and China.

After the spacecraft orbited the Earth for about 10 days, it was sent into the translunar orbit last Tuesday and successfully injected into the lunar orbit on Saturday. Indian Space Research Agency (Isro) said that all checks showed that Chandrayaan-3 was in good "health." It has also pointed out that "this is the third time in succession that Isro has successfully injected a spacecraft into the lunar orbit." Scientists say Chandrayaan-3, the third in India's program of lunar exploration, is expected to build on the success of its earlier Moon missions.

An anonymous reader quotes a report from New Atlas: Scientists have discovered that the Sun produces higher energy light than was thought possible. An unusual type of telescope detected gamma rays with energies of over 1 tera electron volt (TeV), at least five times more energetic than previously known. The Sun emits light spanning a wide range of energies, from infrared through visible light and up to ultraviolet. It was previously predicted that the Sun could produce gamma rays -- electromagnetic radiation with the highest energy -- through interactions with cosmic rays from distant sources, but these would rarely reach Earth to be detectable. A few decades later, these gamma rays were eventually detected by NASA's Fermi Gamma-ray Space Telescope in 2011. With more and more observations over the years since, Fermi found that the Sun was producing around seven times more gamma rays than had been predicted. Their energies were detected at up to 200 giga electron volts (GeV), which is the upper limit that Fermi can pick up.

So for the new study, scientists used a different instrument that's sensitive beyond that limit. The instrument in question is called the High-Altitude Water Cherenkov Observatory (HAWC), and it works in a way unlike your everyday telescope. It's made up of a series of 300 big tanks filled with 200 tons of water each. When gamma rays hit molecules in the Earth's atmosphere, they create a cascade of lower energy particles, and these can interact with the water molecules in those big tanks. Sensitive instruments keep watch for these interactions, and scientists can work backwards to calculate the energy of the original gamma ray. Using HAWC data gathered between 2015 and 2021, the researchers discovered that the Sun was producing gamma rays with energies well beyond that which Fermi detected. They were reaching energies on the scale of TeV, with some spiking to almost 10 TeV. Exactly how the Sun produces them remains a mystery, the team says, but further research will investigate how their energy gets so high and what role the Sun's magnetic field might play. The research was published in the journal Physical Review Letters.

Recently Ars Technica reported on "another application for SpaceX's Starship architecture that the company is studying," adding that NASA "is on board to lend expertise.

"Though still in a nascent phase of tech development, the effort could result in repurposing Starship into a commercial space station, something NASA has a keen interest in because there are no plans for a government-owned research lab in low-Earth orbit after the International Space Station is decommissioned after 2030." NASA announced last month a new round of agreements with seven commercial companies, including SpaceX. The Collaborations for Commercial Space Capabilities (CCSC) program is an effort established to advance private sector development of emerging products and services that could be available to customers — including NASA — in approximately five to seven years... NASA passed over SpaceX's bid for a funded space station development agreement in 2021, identifying concerns about SpaceX's plans for scaling its life-support system to enable long-duration missions and SpaceX's plan for a single docking port, among other issues. The space agency isn't providing any funding for the new CCSC effort, which includes the Starship space station concept, but the government will support the industry with technical expertise, including expert assessments, lessons learned, technologies, and data.

Apart from the SpaceX agreement, NASA said it will provide non-financial support to Blue Origin's initiative to develop a crew spacecraft for orbital missions that would launch on the company's New Glenn rocket. The agency also supports Northrop Grumman's development of a human-tended research platform in low-Earth orbit to work alongside the company's planned space station. The other companies NASA picked for unfunded agreements were: Sierra Space's proposal for a crewed version of its Dream Chaser spacecraft, Vast's concept for a privately owned space station, ThinkOrbital's plan to develop welding, cutting, inspection, and additive manufacturing technology for construction work in space, and Special Aerospace Services for collaboration on an autonomous maneuvering unit to assist, or potentially replace, spacewalkers working outside a space station.

Despite the lack of NASA funding, the new collaboration announcement with SpaceX laid out — in broad strokes, at least — one of the directions SpaceX may want to take Starship. NASA said it will work with SpaceX on an "integrated low-Earth orbit architecture" that includes the Starship vehicle and other SpaceX programs, including the Dragon crew capsule and Starlink broadband network.
The artice links to a recent NASA document detailing SpaceX's space station concept. Phil McAlister, who heads NASA's commercial spaceflight division, says its size and reduced cost "could have a far-reaching impact on the sustainable development of the low-Earth orbit) economy...

"Adding increased confidence is the company's plan to self-fund Starship development from its launch and satellite enterprises."

Thanks to long-time Slashdot reader Amiga Trombone for sharing the article.

"NASA has reestablished full communications with Voyager 2," according to a mission update posted Friday: The agency's Deep Space Network facility in Canberra, Australia, sent the equivalent of an interstellar "shout" more than 12.3 billion miles (19.9 billion kilometers) to Voyager 2, instructing the spacecraft to reorient itself and turn its antenna back to Earth. With a one-way light time of 18.5 hours for the command to reach Voyager, it took 37 hours for mission controllers to learn whether the command worked. At 12:29 a.m. EDT on Aug. 4, the spacecraft began returning science and telemetry data, indicating it is operating normally and that it remains on its expected trajectory.
"Had the Earth-based signals not reached Voyager 2, the spacecraft is already programmed to reorient itself multiple times a year to keep its antenna pointing in our planet's direction," CNN points out. "The next reset was already scheduled for October 15. But the team didn't want to wait that long..."

After controllers sent the wrong command to the 46-year-old spacecraft, Voyager 2's antenna needed to be shifted "a mere 2 degrees," notes The Associated Press:

Voyager 2 has been hurtling through space since its launch in 1977 to explore the outer solar system. Launched two weeks later, its twin, Voyager 1, is now the most distant spacecraft — 15 billion miles (24 billion kilometers) away — and still in contact. As long as their plutonium power holds, the Voyagers may be alive and well for the 50th anniversary of their launch in 2027, according to Dodd. Among the scientific tidbits they've beamed back in recent years include details about the interstellar magnetic field and the abundance of cosmic rays.

Capella Space's synthetic aperture radar satellites are falling back to Earth much sooner than than the three years they were anticipated to operate, according to publicly available satellite data. TechCrunch reports: The startup has launched a total of ten small satellites to low Earth orbit since 2018, including eight in its family of "Whitney"-class spacecraft. Five of these satellites have reentered the atmosphere since the end of January of this year, including three of the Whitneys. Those Whitney sats were in orbit for less than two-and-a-half years; one, Capella-5, was in orbit for less than two years. That leaves five of the constellation in orbit, including the Capella-9 and Capella-10 launched on March 16, which are operating at an altitude of around 584 km and 588 km, respectively.

According to filings with the Federal Communication Commission, the propulsion system of Capella-9 was built by Phase Four. At least one of the satellites that has reentered prematurely, Capella-5, also used Phase Four propulsion. In that same filing from March 2022, Capella said its Capella-9 satellite would operate at an orbital altitude of 525 km, and maintain an altitude between 475-575 km for three years. It seems this is the typical mission profile of Capella satellites. But Capella-7 and Capella-8, launched in January 2022, appear to be now operating below 400 kilometers, and will likely deorbit in a matter of weeks to a few months. The unexpected decay could be due to a problem with the propulsion system, or a systematic miscalculation of its requirements.

"Probably they [Capella-7 and Capella-8] will reenter in Sep-Oct or so," astronomer and analyst Jonathan McDowell said when reviewing the data at TechCrunch's request. "I suspect propulsion failures but certainly it isn't clear." In a statement to TechCrunch, Capella CEO Payam Banazadeh confirmed that some of the satellites have been deorbiting faster than expected "due to the combination of increased drag due to much higher solar activity than predicted by NOAA and less than expected performance from our 3rd party propulsion system." "We have upgraded our propulsion system on all future satellites to account for these facts, including the launch of our next generation satellite Acadia-1, currently scheduled for launch on August 5th 2023. We plan to launch eight of our next generation Acadia satellites over the next 12 months," he added.

India has confirmed that an object that washed up on a Western Australian beach recently was from one of its rockets. The BBC reports: The giant metal dome was found at Green Head beach, about 250km (155 miles) north of Perth, in mid-July -- prompting speculation about its origins. India's space agency spokesman told the BBC on Monday it was from one of its Polar Satellite Launch Vehicles (PSLV). Sudhir Kumar added that it would be up to Australia to decide what to do with the object. He did not comment further. His comments came after the Australian Space Agency (ASA) on Wednesday said that the object was "most likely" the third stage of a PSLV, which are used by India to launch satellites into orbit.

The ASA said it was working with India's space agency to "determine next steps, including considering obligations under the United Nations space treaties." According to the UN Office for Outer Space Affairs, countries are required to return any "foreign" space objects found in their territory to the owners. Western Australia has already indicated it would be happy to keep it. The state's premier, Roger Cook, suggested to local media that the object could be stored in the state museum alongside debris from Nasa's Skylab station, which was discovered in 1979. Locals said they might be interested in turning it into a local tourist attraction, according to the Australian Broadcasting Corporation (ABC).

Cory Doctorow, author, digital rights advocate, and co-editor of the blog Boing Boing, has launched a Kickstarter campaign for his next book, called The Internet Con: How To Seize the Means of Computation. "The book presents an array of policy solutions aimed at dismantling the monopolistic power of Big Tech, making the internet a more open and user-focused space," writes Boing Boing's Mark Frauenfelder. "Key among these solutions is the concept of interoperability, which would allow users to take their apps, data, and content with them when they decide to leave a service, thus reducing the power of tech platforms." From Cory's Medium article announcing the Kickstarter: I won't sell my work with DRM, because DRM is key to the enshittification of the internet. Enshittification is why the old, good internet died and became "five giant websites filled with screenshots of the other four" (h/t Tom Eastman). When a tech company can lock in its users and suppliers, it can drain value from both sides, using DRM and other lock-in gimmicks to keep their business even as they grow ever more miserable on the platform.

Here is how platforms die: first, they are good to their users; then they abuse their users to make things better for their business customers; finally, they abuse those business customers to claw back all the value for themselves. Then, they die.

The Internet Con isn't just an analysis of where enshittification comes from: it's a detailed, shovel-ready policy prescription for halting enshittification, throwing it into reverse and bringing back the old, good internet.

Airbus is forming a joint venture with US start-up Voyager to compete to build a replacement for the International Space Station, an internationally funded laboratory in space that is due to be decommissioned by the end of the decade. From a report: The deal announced on Wednesday formalises the partnership unveiled in January on Voyager's Starlab project and will see Airbus replace US defence company Lockheed Martin as its main industrial partner. Starlab is one of the frontrunners in a race launched by Nasa four years ago to develop commercial alternatives to the ISS, which was launched 23 years ago and orbits some 420 kms above the earth.

The ISS is an international collaboration, funded by national space agencies from the US, EU, Canada, Japan and Russia. Since its launch it has hosted 258 astronauts and cosmonauts from 20 countries. Among the other contenders in the race trying to build a replacement is Jeff Bezos's Blue Origin, which is leading a consortium offering a 30,000 sq ft "ecosystem" of different habitats and services for industry, research and tourism. Nasa has allocated $550mn to four consortiums in the first phase of the competition, which will examine the spacecraft design and the business cases of each contender. The US agency has insisted each be commercially viable.

Video game retailer GameStop said it will remove its support for crypto wallets citing regulatory uncertainty in the United States, just one year after rolling out the service. From a report: "Due to the regulatory uncertainty of the crypto space, GameStop has decided to remove its iOS and Chrome Extension wallets from the market on November 1, 2023," according to its website. Customers will have access until October 1. The wallets, which were rolled out just about a year ago, allow users to manage crypto and non-fungible tokens (NFTs) throughout decentralized apps and enable transactions of GameStop's NFT marketplace.

According to CNBC, Walmart shoppers "will soon see more third-party ads on screens in Walmart self-checkout lanes and TV aisles; hear spots over the store's radio; and be able to sample items at demo stations." From the report: For Walmart, selling ad space to its wealth of existing partners is another way to capitalize on the company's huge reach and to expand into higher-margin businesses. The discounter has nearly 4,700 stores across the U.S., with roughly 90% of Americans living within 10 miles of a Walmart store. In the U.S., about 139 million customers visit Walmart stores and its website or app each week.

The company plans to ramp up in-store ads using its approximately 170,000 digital screens across its locations as well as 30-second radio spots that will be available to suppliers later this year and can target a specific store or region. And it's hoping at least one of the new advertising initiatives will be easy to digest: free samples in stores on the weekends. It tried out the new in-house approach of selling sampling stations in Dallas-Fort Worth and plans to offer the option in more than 1,000 stores across the country by the end of January.

Advertising still drives a small sliver of Walmart's overall revenue. Its global advertising business hit $2.7 billion in the most recent fiscal year, which ended in late January. That's less than 1% of Walmart's total annual revenue. Yet it is becoming a more meaningful growth engine for Walmart. CEO Doug McMillon said earlier this year that he expects company profits to grow faster than sales over the next five years, driven in part by higher-margin businesses, including advertising. In the most recent fiscal year, Walmart's global ads business grew nearly 30% and its U.S. ads business, Walmart Connect, rose about 40%. That's a sharper gain than the approximately 7% increase in Walmart's total revenue and Walmart U.S. net sales during the period.