Eric Berger writes via Ars Technica: A consortium of nearly every major European satellite company announced Tuesday that it plans to bid for a proposed satellite constellation to provide global communications. Essentially, such a constellation would provide the European Union with connectivity from low-Earth orbit similar to what SpaceX's Starlink offers. The bid, which includes large players such as Airbus Defence and Space, Eutelsat, SES, and Thales Alenia Space, comes in response to a request by the European Union for help in constructing a sovereign constellation to provide secure communications for government services, including military applications.

European Union Commissioner Thierry Breton announced the continent's plans for this constellation -- known as Infrastructure for Resilience, Interconnectivity and Security by Satellite, or IRIS^2 -- last November. The European Union will provide 2.4 billion euro, with additional contributions expected from the European Space Agency and private investments. "IRIS^2 establishes space as a vector of our European autonomy, a vector of connectivity and a vector of resilience," Breton said at the time. "It heightens Europe's role as a true space power. With a clear ambition and sense of direction."

The partnership announced Tuesday, which also includes Deutsche Telekom, Hispasat, OHB, Orange, Hisdesat, and Telespazio, will aim to create a state-of-the-art satellite constellation based on a multi-orbit architecture. Although it is top-heavy with established industry players, the partnership said it will encourage startups in the European space sector to join the coalition. This is in response to a desire by Breton to broaden the European commercial space sector. At present, Europe estimates the cost of this constellation at about 6 billion euro and desires it to be ready to provide global coverage by the year 2027.

Slashdot reader Dave Knott shares the four class of 2023 inductees into the Video Game Hall Of Fame. They were announced today at The Strong National Museum of Play. From the press release: Barbie Fashion Designer : "The 1996 hit Barbie Fashion Designer emerged at a time when many games were marketed to male players. Published by Digital Domain/Mattel Media, it proved that a computer game targeted to girls could succeed, selling more than 500,000 copies in two months. The game helped greatly expanded the market for video games and in the process opened important -- and ongoing -- discussions about gender and stereotypes in gaming. Barbie Fashion Designer was also innovative in bridging the gap between the digital and the physical, allowing players to design clothes for their Barbie dolls and print them on special fabric."

Computer Space : "Nutting Associate's Computer Space appeared in 1971 and was the first commercial video game. Inspired by the early minicomputer and previous World Video Game Hall of Fame inductee -- Spacewar! (1962) -- the coin-operated Computer Space proved that video games could reach an audience outside of computer labs. While not a best-seller, it was a trailblazer in the video game world and inspired its creators to go on to establish Atari Inc., a video game giant in the 1970s and 1980s."

The Last of Us : "Released by Naughty Dog and Sony Interactive Entertainment in 2013, The Last of Us jumped into an oversaturated field of post-apocalyptic zombie games and quickly stood out among the rest with its in-depth storytelling, intimate exploration of humanity, thrilling game jumps and cutscenes, and its memorable characters. More than 200 publications named it the game of the year in 2013. Its story has since made the jump to Hollywood, inspiring an HBO adaptation in 2023 watched weekly by millions."

Wii Sports : "Wii Sports launched with the Nintendo Wii home video game system in 2006 and introduced motion-based technology to living rooms across the world. With a simple swipe of the controller, players could serve a tennis ball, hurl a bowling bowl, throw a left hook, or drive a golf ball. The simple mechanics made the game accessible to almost anyone -- allowing it to be played by young children and seniors alike -- and helped to redefine the idea of who is a "gamer." Ultimately, the game helped Nintendo to sell more than 100 million Wii consoles worldwide." These titles managed to beat out several other incredibly popular titles, including Angry Birds, Age of Empires, Call of Duty 4: Modern Warfare, GoldenEye 007, NBA 2K, FIFA International Soccer, Quake, and Wizardry.

The James Webb Space Telescope (JWST) has detected water vapor around a distant rocky planet located 26 light-years away. "The water vapor could indicate the presence of an atmosphere around the extrasolar planet, or exoplanet, a discovery that could be important for our search for habitable worlds outside the solar system," reports Space.com. "However, the scientists behind the discovery caution that this water vapor could be coming from the world's host star rather than the planet itself." From the report: The exoplanet, designated GJ 486 b, orbits a red dwarf star located 26 light-years away in the Virgo constellation. Although it has three times the mass of Earth, it is less than a third the size of our planet. GJ 486 b takes less than 1.5 Earth days to orbit its star and is probably tidally locked to the red dwarf, meaning it perpetually shows the same face to its star.

Red dwarfs like the parent star of GJ 486 b are the most common form of stars in the cosmos, meaning that statistically speaking, rocky exoplanets are most likely to be found orbiting such a stellar object. Red dwarf stars are also cooler than other types of stars, meaning that a planet must orbit them tightly to remain warm enough to host liquid water, a vital element needed for life. But, red dwarfs also emit violent and powerful ultraviolet and X-ray radiation when they are young that would blast away the atmospheres of planets that are too close, potentially making those exoplanets very inhospitable to life.

That means astronomers are currently keen to discover if a rocky planet in such a harsh environment could manage to both form an atmosphere and then hang on to it long enough for life to take hold, a process that took around a billion years on Earth. [...] Even though GJ 486 b's host star is cooler than the sun, water vapor could still concentrate in starspots. If that is the case, this could create a signal that mimics a planetary atmosphere. If there is an atmosphere around GJ 486 b, then radiation from its red dwarf parent star will constantly erode it, meaning it has to be replenished by steam from the exoplanet's interior ejected by volcanic activity. The research appears in a paper on arXiv while it awaits publication in the journal Astrophysical Journal Letters. You can read more about it via NASA.

The number of known mountains in Earth's oceans has roughly doubled. Global satellite observations have revealed nearly 20,000 previously unknown seamounts, researchers report in the April Earth and Space Science. From a report: Just as mountains tower over Earth's surface, seamounts also rise above the ocean floor. The tallest mountain on Earth, as measured from base to peak, is Mauna Kea, which is part of the Hawaiian-Emperor Seamount Chain. These underwater edifices are often hot spots of marine biodiversity. That's in part because their craggy walls -- formed from volcanic activity -- provide a plethora of habitats. Seamounts also promote upwelling of nutrient-rich water, which distributes beneficial compounds like nitrates and phosphates throughout the water column. They're like "stirring rods in the ocean," says David Sandwell, a geophysicist at the Scripps Institution of Oceanography at the University of California, San Diego.

More than 24,600 seamounts have been previously mapped. One common way of finding these hidden mountains is to ping the seafloor with sonar. But that's an expensive, time-intensive process that requires a ship. Only about 20 percent of the ocean has been mapped that way, says Scripps earth scientist Julie Gevorgian. "There are a lot of gaps." So Gevorgian, Sandwell and their colleagues turned to satellite observations, which provide global coverage of the world's oceans, to take a census of seamounts. The team pored over satellite measurements of the height of the sea surface. The researchers looked for centimeter-scale bumps caused by the gravitational influence of a seamount. Because rock is denser than water, the presence of a seamount slightly changes the Earth's gravitational field at that spot. "There's an extra gravitational attraction," Sandwell says, that causes water to pile up above the seamount.

The Boston Globe reports on a 25-person startup pursuing an unusual solution to the problem of space junk: "Imagine if every car we ever created was just left on the road," said aerospace entrepreneur Jeromy Grimmett. "That's what we're doing in space." Grimmett's tiny company, Rogue Space Systems Corp., has devised a daring solution. It's building "orbots" — satellites with robotic arms that can fly right up to a disabled satellite and fix it. Or these orbots could use their arms to collect orbiting rubble left behind by hundreds of previous launches — dangerous junk that's become a hazard to celestial navigation...

Rogue Space aims to catch up fast, with help from Small Business Technology Transfer funds from the SpaceWERX Orbital Prime initiative. Created by the U.S. Space Force, Orbital Prime seeks to build up U.S. private-sector firms that can protect national security by maintaining military satellites and clearing hazardous space debris.
Its first 10-pound, proof-of-concept satellite will launch later this year, the article points out, "to test sensors and software to confirm the system can identify and track other satellites." But "the real excitement will begin later this year" when the company launches a prototype that's four times larger that will "use maneuvering thrusters to test the extremely precise navigation needed to approach a satellite."

And then in late 2024 or early 2025 the company will launch its 660-pound satellite "with robotic arms for fixing other satellites or for dragging debris to a lower orbit, where it will fall back to Earth."

The Associated Press reports that "water may be more widespread and recent on Mars than previously thought, based on observations of Martian sand dunes by China's rover." A paper published in Science suggests thin films of water appeared on sand dunes sometime between 1.4 million years ago and as recently as 400,000 years ago — or perhaps even sooner: The finding highlights new, potentially fertile areas in the warmer regions of Mars where conditions might be suitable for life to exist, though more study is needed...

Before the Zhurong rover fell silent, it observed salt-rich dunes with cracks and crusts, which researchers said likely were mixed with melting morning frost or snow as recently as a few hundred thousand years ago... Conditions during that period were similar to now on Mars, with rivers and lakes dried up and no longer flowing as they did billions of years earlier...

The rover did not directly detect any water in the form of frost or ice. But Qin said computer simulations and observations by other spacecraft at Mars indicate that even nowadays at certain times of year, conditions could be suitable for water to appear... Small pockets of water from thawing frost or snow, mixed with salt, likely resulted in the small cracks, hard crusty surfaces, loose particles and other dune features like depressions and ridges, the Chinese scientists said.
Space.com explains exactly how the discovery was confirmed: The laser-induced breakdown spectrometer (MarSCoDe) instrument onboard the rover zapped sand grains into millimeter-sized particles. Their chemical makeup revealed hydrated minerals like sulfates, silica, iron oxide and chlorides... Researchers say water vapor traveled from Martian poles to lower latitudes like Zhurong's spot a few million years ago, when the planet's polar ice caps released high amounts of water vapor, thanks to a different tilt that had Mars' poles pointed more directly toward the sun. Frigid temperatures on the wobbling planet condensed the drifting vapor and dropped it as snow far from the poles, according to the latest study.

Mars' tilt changes over a 124,000-year cycle, so "this offers a replenishing mechanism for vapor in the atmosphere to form frost or snow at low latitudes where the Zhurong rover has landed," Qin told Space.com. But "no water ice was detected by any instrument on the Zhurong rover." Instead, in the same way that salting roads on Earth melts icy patches during storms, salts in Martian sand dunes warmed the fallen snow and thawed it enough to form saltwater. The process also formed minerals such as silica and ferric oxides, which Zhurong spotted, researchers say. The saltwater, however, didn't stay around for long. Temperatures on Mars swing wildly and spike in the mornings between 5 a.m. and 6 a.m., so the saltwater evaporated and left behind salt and other newly formed minerals that later seeped between the dune's sand grains, cementing them to form a crust, according to the study...

"The phenomenon was documented at one site, but it should be applicable to a fairly large fraction of Mars' surface at similar latitudes," Manasvi Lingam, an assistant professor of astrobiology at the Florida Institute of Technology who wasn't involved in the new research, told Space.com.
Since the rover found water activity on (and in) salty Martian dunes, the researchers now suggest future missions search for salt-tolerant microbes , and are raising the possibility of "extant life on Mars."

"Earth's magnetic environment is filled with a symphony of sound that we cannot hear," NASA wrote this month. When solar winds approach earth, "it causes the magnetic field lines and plasma around Earth to vibrate like the plucked strings of a harp, producing ultralow-frequency waves... a cacophonous operetta portraying the dramatic relationship between Earth and the Sun."

So NASA is now announcing "a new NASA-funded citizen science project called HARP — or Heliophysics Audified: Resonances in Plasmas " that has "turned those once-unheard waves into audible whistles, crunches, and whooshes..." Or, as the Washington Post puts it, "NASA wants your help listening in on the universe."

From NASA's news release: In 2007, NASA launched five satellites to fly through Earth's magnetic "harp" — its magnetosphere — as part of the THEMIS mission (Time History of Events and Macroscale Interactions during Substorms). Since then, THEMIS has been gathering a bounty of information about plasma waves across Earth's magnetosphere. "THEMIS can sample the whole harp," said Michael Hartinger, a heliophysicist at the Space Science Institute in Colorado. "And it's been out there a long time, so it has collected a lot of data."

The frequencies of the waves THEMIS measures are too low for our ears to hear, however. So the HARP team sped them up to convert them to sound waves. By using an interactive tool developed by the team, you can listen to these waves and pick out interesting features you hear in the sounds... Preliminary investigations with HARP have already started revealing unexpected features, such as what the team calls a "reverse harp" — frequencies changing in the opposite way than what scientists anticipated...

"Data sonification provides human beings with an opportunity to appreciate the naturally occurring music of the cosmos," said Robert Alexander, a HARP team member from Auralab Technologies in Michigan. "We're hearing sounds that are literally out of this world, and for me that's the next best thing to floating in a spacesuit."

To start exploring these sounds, visit the HARP website.
"Think listening to years' worth of wave patterns is a job for artificial intelligence? Think again," writes the Washington Post. In a news release, HARP team member Martin Archer of Imperial College London says humans are often better at listening than machines. "The human sense of hearing is an amazing tool," Archer says. "We're essentially trained from birth to recognize patterns and pick out different sound sources. We can innately do some pretty crazy analysis that outperforms even some of our most advanced computer algorithms."

VICE's Ade Adeniji booted up The Crew 2, GTA V, GTA San Andreas, Saints Row, and Watch Dogs 2, and noticed a interesting pattern: there are no suburbs to be seen. "We are transported to major cities and vast countrysides, but nothing that really speaks to the in between -- to the suburbs," writes Adeniji. "[H]ow can open world games leave out a space that we fundamentally see as Americana? Is this about design choices and constraints, or does it speak to something deeper about how we really view American suburbs -- and how desperately we want to escape them?" Here's an excerpt from the report: I figured I would first take my suburbia question to someone who has been creating games since the early 1970s. Don Daglow, pioneer of the MMORPG genre with Neverwinter Nights, broke down his answer into three parts: scale, visual interest, and stereotypes. In terms of scale, suburbs typically have lots of smaller, more repetitive environmental elements when compared to cities. Think strip malls and identical homes versus the Statue of Liberty and the Empire State Building. "Big objects in the environment create vertical movement opportunities as well as horizontal movement in 3D spaces. You can support superhero skills, think Spider Man, and jumping, think early Assassins Creed." Daglow said. "Godzilla never attacked a small suburb on the rail line north of Tokyo. Why would he waste his time there when there's so much more to chomp downtown?"

Lazlow Jones, voice of GTA III's Chatterbox FM and a longtime director, writer, and producer at Rockstar Games, agreed. But Rockstar itself made a gradual progression from the chaotic cities of GTA to the open natural worlds of Red Dead. Then the company brought the two together in GTA V. "When I was at Rockstar, we started off focusing on open world games set in urban areas because it gave us great density," Lazlow began. "But over the years we expanded to rural environments while keeping them interesting and engaging." [...] Carly Kocurek, who teaches in the Game Design and Experiential Media program at Illinois Tech, says suburbs operate in the realm of "perceived beigeness" making it hard to imagine them as settings for the kinds of stories and worlds we see most often in open world games. To the extent that suburbia does show up strongly, these spaces often serve as a starting or transition point for a character, akin to maybe the first 10 minutes of a film, or the movie's midpoint.

There are other design reasons why suburbs don't feature prominently in video games and why sparse areas away from intriguing points of interest are often the first to get cut. "You're really trying to compress a massive space in real life, into a virtual space which is actually really small. It's like taking something and cutting it down by 10x," explained Will Harris, who led the open world design team at Light Speed LA. Harris says that in world building, one of the first steps is thinking about defining features. What makes Chicago, for instance, feel different than Washington D.C.? Huge landmarks immediately orient us in a specific space and differentiate it from others. And woe unto you if you do try to architect suburbs in large numbers. Developers could try to build out distinct houses, began Erik Villarreal, an environmental artist at Visual Concepts/2K. "But this requires a developer to create homes that stand out from each other, which can be time consuming and tie up a lot of resources," he said. Harris adds that there are only so many mechanics in sandbox gameplay and design. He calls the suburbs "interstitial spaces." But the larger these spaces become, the more unwieldy, and the more quickly the player realizes that these spaces are superficial. We've all had the frustrating experience in gaming where we reach a certain part of a map, but then discover there's nothing actually to do there. "So the Staten Island kit gets vaporized. We trim the fat." Harris says.

The European Space Agency appears to have a slight problem: a critical antenna is jammed on their Jupiter-bound spacecraft launched two weeks ago. From the Associated Press: The 52-foot (16-meter) radar antenna on Juice unfolded only one-third of the way following liftoff, according to the space agency. Engineers suspect a tiny pin may be protruding. Flight controllers in Germany plan to fire the spacecraft's engine in hopes of shaking the pin loose. If that doesn't work, they said they have plenty of time to solve the problem.

Juice, short for Jupiter Icy Moons Explorer, won't reach the giant planet until 2031. It's taking a roundabout path to get there, including gravity-assist flybys of Earth and our moon, and Venus. The radar antenna is needed to peer beneath the icy crust of three Jupiter moons suspected of harboring underground oceans and possibly life, a major goal of the nearly $1.8 billion mission. Its targets include Callisto, Europa and Ganymede, the largest moon in the solar system.

Longtime Slashdot reader canux writes: In an effort to continue to power Voyager 2's five on-board scientific instruments, NASA engineers have devised a software update that disables the probe's electrical supply safety system [to redirect the power to them]. "Although the spacecraft's voltage will not be tightly regulated as a result, even after more than 45 years in flight, the electrical systems on both probes remain relatively stable, minimizing the need for a safety net," according to NASA JPL. "The engineering team is also able to monitor the voltage and respond if it fluctuates too much. If the new approach works well for Voyager 2, the team may implement it on Voyager 1 as well."

The Voyager probes each contain a Multihundred-Watt Radioisotope Thermoelectric Generator for their power which use Plutonium-238 to generate heat to produce electricity with a thermocouple. Plutonium-238 has a half-life of a little over 87 years which means that Voyager 2 has seen a greater than 25% reduction in its power output since it was launched.

A new set of patches have been released for the Intel Linux graphics driver that "can provide 10-15% better performance when operating in the tuned mode," reports Phoronix. From the report: The set of Intel i915 Linux kernel graphics driver patches are about exposing the Intel RPS (Requested Power State) up/down thresholds. Right now the Intel Linux kernel driver has static values set for the up/down thresholds between power states while these patches would make them dynamically configurable by user-space. Google engineer Syed Faaiz Hussain raised the issue that they experimented with the Intel RPS tuning and were able to manage up to 15% better performance. With Counter-Strike: Global Offensive with OpenGL was a 14.5% boost, CS:GO with Vulkan was 12.9% faster, and Civilization VI with OpenGL was 11% faster while Strange Brigade was unchanged. No other game numbers were provided.

But as this is about changing the threshold for how aggressively the Intel graphics hardware switches power states, the proposed patches leave it up to user-space to adjust the thresholds as they wish. Google engineers are interested in hooking this into Feral's GameMode so that the values could be automatically tuned when launching games and then returning to their former state when done gaming, in order to maximize battery life / power efficiency. The only downside with these current patches are that they work only for non-GuC based platforms... So the latest Alder/Raptor Lake notebooks as well as Intel DG2/Alchemist discrete graphics currently aren't able to make use of this tuning option.

Satellite manufacturer AST SpaceMobile partnered with AT&T to make the first two-way audio call using satellites with a standard smartphone. "The initial call was placed using AT&T's networks in Midland, Texas, to mobile carrier Ratuken in Japan on an unmodified Samsung Galaxy S22 smartphone using AST SpaceMobile's BlueWalker 3 satellite," reports Engadget. AST SpaceMobile claims to be building "the first and only space-based cellular broadband network." From the report: AT&T aims to use satellites to provide global cellular broadband from 2G to 5G. "Achieving what many once considered impossible, we have reached the most significant milestone to date in our quest to deliver global cellular broadband from space," Abel Avellan, CEO and chairman of AST SpaceMobile, said in a release. "While we take a moment to celebrate this tremendous accomplishment, we remain focused on the path ahead and pivotal next steps that get us closer to our goal of transforming the way the world connects."

It's unclear whether satellite access would come at an extra cost. In AT&T's original AST SpaceMobile partnership announcement, the company couldn't say whether existing plans would include satellite coverage. [...] While satellite offerings aren't available for consumers yet, this successful test brings widespread access one step closer to becoming a reality.

Japanese startup ispace assumed failure in its attempt to make the first private moon landing on Tuesday as engineers struggled to regain contact with the company's Hakuto-R Mission 1 (M1) lander long after it was due for a lunar touchdown. From a report: "We lost the communication, so we have to assume that we could not complete the landing on the lunar surface," ispace CEO Takeshi Hakamada said on a company live stream, as mission control engineers in Tokyo continued to try regaining contact with the lander. The M1 lander appeared set to touch down around 12:40 p.m. Eastern time (1640 GMT Tuesday) after coming as close as 295 feet from the lunar surface, a live animation of the lander's telemtry showed.

A group of ten bipartisan lawmakers from Nevada and California have asked the Biden administration to quickly provide federal funding for a private company to construct a high-speed rail line between Las Vegas and the Los Angeles area. The Associated Press reports: All six of Nevada's elected federal lawmakers and four House members from California sent the letter to U.S. Transportation Secretary Pete Buttigieg. They said they're on board with a proposal from Brightline West to spend more than $10 billion to lay tracks along the Interstate 15 corridor. The Mojave Desert is largely open space, and the electric-powered trains could potentially cut the four-hour trip in half, carrying passengers at speeds of nearly 200 mph (322 kph). "This project is a major priority because it will make southern Nevada more accessible to millions of visitors each year," said U.S. Sen. Jacky Rosen, the Nevada Democrat leading the group. She said it "will boost our economy and create more good-paying jobs."

Union labor will be used during construction, the company and the Southern Nevada Building Trades Union have announced in recent weeks. Brightline West is seeking $3.75 billion in federal funding from the Biden administration-backed federal infrastructure law. The project could be "the blueprint for how we can connect major city pairs that are too short to fly and too far to drive," said Mike Reininger, CEO of Florida-based Brightline Holdings LLC, the only privately owned and operated intercity passenger railroad in the United States. The lawmakers' letter pointed to company projections of 35,000 construction jobs, 1,000 permanent jobs and reduced planet-warming greenhouse gas emissions from vehicles.

Last week there was some good news for startups working on commercial nuclear fusion in the U.S. And it came from the Nuclear Regulatory Commission (or NRC), the top governing body for America's nuclear power plants nuclear materials, reports CNBC: The top regulatory agency for nuclear materials safety in the U.S. voted unanimously to regulate the burgeoning fusion industry differently than the nuclear fission industry, and fusion startups are celebrating that as a major win. As a result, some provisions specific to fission reactors, like requiring funding to cover claims from nuclear meltdowns, won't apply to fusion plants. (Fusion reactors cannot melt down....)

Other differences include looser requirements around foreign ownership of nuclear fusion plants, and the dispensing of mandatory hearings at the federal level during the licensing process, said Andrew Holland, CEO of the industry group, the Fusion Industry Association... The approach to regulating fusion is akin to the regulatory regime that is currently used to regulate particle accelerators, which are machines that are capable of making elementary nuclear particles, like electrons or protons, move really fast, the Fusion Industry Association says...

Technically speaking, fusion will be regulated under Part 30 of the Code of Federal Regulations, Jeff Merrifield, a former NRC commissioner, told CNBC. The regulatory structure for nuclear fission is under Part 50 of that code. "The regulatory structure needed to regulate particle accelerators under Part 30, is far simpler, less costly and more efficient than the more complicated rules imposed on fission reactors under Part 50," Merrifield told CNBC. "By making this decision to use the Part 30, the commission recognized the decreased risk of fusion technologies when compared with traditional nuclear reactors and has imposed a framework that more appropriately aligns the risks and the regulations," he said.
"Private fusion companies have raised about $5 billion to commercialize and scale fusion technology," the article points out, "and so the decision from the NRC on how the industry would be regulated is a big deal for companies building in the space." And they shared three reactions from the commercial fusion industry:

• The CEO of the industry group, the Fusion Industry Association told CNBC the decision was "extremely important."

• The scientific director for fusion startup Focused Energy told CNBC the decision "removes a major area of uncertainty for the industry."

• The general counsel for nuclear fusion startup Helion told CNBC. "It is now incumbent on us to demonstrate our safety case as we bring fusion to the grid, and we look forward to working with the public and regulatory community closely on our first deployments."

An anonymous reader quotes a report from Ars Technica: China is building sophisticated cyber weapons to "seize control" of enemy satellites, rendering them useless for data signals or surveillance during wartime, according to a leaked US intelligence report. The US assesses that China's push to develop capabilities to "deny, exploit or hijack" enemy satellites is a core part of its goal to control information, which Beijing considers to be a key "war-fighting domain." The CIA-marked document, which was issued this year and has been reviewed by the Financial Times, was one of dozens allegedly shared by a 21-year-old US Air Guardsman in the most significant American intelligence disclosures in more than a decade. A cyber capability of this nature would far exceed anything Russia has deployed in Ukraine, where electronic warfare teams have taken a brute-force approach with little effect.

These attacks, first developed in the 1980s, attempt to drown out signals between low-orbit SpaceX satellites and their on-ground terminals by broadcasting on similar frequencies from truck-borne jamming systems such as the Tirada-2. China's more ambitious cyber attacks aim to mimic the signals that enemy satellites receive from their operators, tricking them into either being taken over completely or malfunctioning during crucial moments in combat. The classified US document said this cyber capability would allow China "to seize control of a satellite, rendering it ineffective to support communications, weapons, or intelligence, surveillance, and reconnaissance systems." The US has never disclosed whether it has similar capabilities.

Taiwan, which has taken note of how indispensable satellite communications have been to the Ukrainian military, is seeking to build out communications infrastructure that can survive an attack from China. It is courting investors to establish its own satellite provider, while experimenting with non-geostationary satellite receivers in 700 locations around Taiwan to guarantee bandwidth in the event of war or disasters, the Financial Times reported in January. China's goals, according to the leaked assessment, [...] would seek to knock out the ability of satellites -- which tend to operate in interconnected clusters -- to communicate with each other, to relay signals and orders to weapons systems, or to send back visual and intercepted electronic data, according to experts. "China understands the superiority that the United States has in the space and cyber domains, so they are very interested in not only improving their own capabilities but in capitalizing on what we refer to as a first-mover advantage in both domains," said Moore, now a visiting professor at Vanderbilt University in Tennessee.

"They are working on all the capabilities that they want to have from a defensive and offensive standpoint, and from an ISR [intelligence, surveillance, and reconnaissance] standpoint. They're firing on all cylinders," he said.

According to CNBC, Google has halted construction of its proposed 80-acre campus in San Jose, California, after the first demolition phase. "Some sources close to the development told CNBC that the company doesn't have plans to revive the project in the near future." From the report: In June 2021, Google won approval to build an 80-acre campus, spanning 7.3 million square feet of office space, in San Jose, California, the third-largest city in the country's most populous state. The estimated economic impact: $19 billion. [...] The city of San Jose may now be paying the price. What was poised to be a mega-campus called "Downtown West," with thousands of new housing units and 15 acres of public parks, is largely a demolition zone at risk of becoming a long-term eyesore and economic zero. CNBC has learned that, as part of Google's downsizing that went into effect early this year, the company has gutted its development team for the San Jose campus.

The construction project, which was supposed to break ground before the end of 2023, has been put on pause, and no plan to restart construction has been communicated to contractors, according to people familiar with the matter who asked not to be named due to non-disclosure agreements. While sources are optimistic that a campus will be built at some point and said Google representatives have expressed a commitment to it, they're concerned the project may not reach the scale promised in the original master plan.

The Mercury News, one of Silicon Valley's main newspapers, previously reported that Google was reassessing its timeline. Sources told CNBC that the company started signaling to contractors late last year that the project could face delays and changes. In February, LendLease, the lead developer for the project, laid off 67 employees, including several community engagement managers, according to filings viewed by CNBC. Senior development managers, a head of business operations and other executives were among those let go. Last month, Google also removed construction updates from its website for the project, according to internal correspondence viewed by CNBC.

An anonymous reader quotes a report from Popular Mechanics: The Mayan calendar's 819-day cycle has confounded scholars for decades, but new research shows how it matches up to planetary cycles over a 45-year span. That's a much broader view of the tricky calendar than anyone previously tried to take. In a study published in the journal Ancient Mesoamerica, two Tulane University scholars highlighted how researchers never could quite explain the 819-day count calendar until they broadened their view.

"Although prior research has sought to show planetary connections for the 819-day count, its four-part, color-directional scheme is too short to fit well with the synodic periods of visible planets," the study authors write. "By increasing the calendar length to 20 periods of 819-days a pattern emerges in which the synodic periods of all the visible planets commensurate with station points in the larger 819-day calendar." That means the Mayans took a 45-year view of planetary alignment and coded it into a calendar that has left modern scholars scratching their heads in wonder.

Mercury was always the starting point for the tricky timeline because its synodic period -- 117 days -- matches nicely into 819. From there, though, we need to start extrapolating out the 819 number, and if you chart 20 cycles of 819, you can fit every key planet into the mix. And Mars may be the kicker for the overall length. With a 780-day synodic period, 21 periods match exactly to 16,380, or 20 cycles of 819. Venus needs seven periods to match five 819-day counts, Saturn has 13 periods to fit with six 819-day counts, and Jupiter 39 periods to hit 19 819-counts. "Rather than limit their focus to any one planet," the authors write, "the Maya astronomers who created the 819-day count envisioned it as a larger calendar system that could be used for predictions of all the visible planet's synod periods, as well as commensuration points with their cycles in the Tzolk'in and Calendar Round."

SpaceX on Thursday launched its next-generation Starship cruise vehicle for the first time atop the company's powerful new Super Heavy booster rocket, in a highly anticipated, uncrewed test flight from the Gulf Coast of Texas. From a report: The two-stage rocketship, standing taller than the Statue of Liberty at 394 feet (120 m) high, blasted off from the company's Starbase spaceport and test facility east of Brownsville, Texas, on a planned 90-minute debut flight into space. A live SpaceX webcast of the lift-off showed the rocketship rising from the launch tower into the morning sky as the Super Heavy's 33 raptor engines roared to life in a ball of flame and billowing clouds of exhaust and water vapor. Getting the Starship and its booster rocket off the ground together for the first time represents a milestone in SpaceX's ambition of sending humans back to the moon and ultimately on to Mars - playing a pivotal role in Artemis, NASA's newly inaugurated human spaceflight program.

US tech giants, grappling with a post-pandemic slowdown, have already laid off tens of thousands of workers. Now they're dumping millions of square feet of office space, pushing vacancies in city centers to record highs and ratcheting up pressure on the commercial real estate industry. From a report:No sector is looking to sublease more office space than Big Tech, according to Jones Lang LaSalle Inc. Alphabet, Meta Platforms, Microsoft and Amazon.com have all announced plans to reduce their office footprint. Amazon has paused construction at a new campus near Washington, DC, and Microsoft is reevaluating plans for a project in Atlanta.

Some 174 million square feet of office space -- double San Francisco's entire inventory -- is available for sublease across the US, according to real estate brokerage firm Savills. That's almost twice what was available pre-pandemic, Savills said. Companies looking to sublease space are still on the hook for rent for the entirety of the lease. But the retrenchment shows how the tech downturn, which contributed to the collapse of Silicon Valley Bank and turmoil in financial markets, is spilling into the broader economy. San Francisco, Seattle and New York are bearing the brunt of the pullback. While New York can count on office demand from financial services and legal firms, tech-centric San Francisco has no such cushion. Seattle business groups, meanwhile, are calling for a tax holiday to keep tenants downtown.