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The Military

The US Military's AI 'Swarm' Initiatives Speed Pace of Hard Decisions About Autonomous Weapons (apnews.com) 70

AI employed by the U.S. military "has piloted pint-sized surveillance drones in special operations forces' missions and helped Ukraine in its war against Russia," reports the Associated Press.

But that's the beginning. AI also "tracks soldiers' fitness, predicts when Air Force planes need maintenance and helps keep tabs on rivals in space." Now, the Pentagon is intent on fielding multiple thousands of relatively inexpensive, expendable AI-enabled autonomous vehicles by 2026 to keep pace with China. The ambitious initiative — dubbed Replicator — seeks to "galvanize progress in the too-slow shift of U.S. military innovation to leverage platforms that are small, smart, cheap, and many," Deputy Secretary of Defense Kathleen Hicks said in August. While its funding is uncertain and details vague, Replicator is expected to accelerate hard decisions on what AI tech is mature and trustworthy enough to deploy — including on weaponized systems.'

There is little dispute among scientists, industry experts and Pentagon officials that the U.S. will within the next few years have fully autonomous lethal weapons. And though officials insist humans will always be in control, experts say advances in data-processing speed and machine-to-machine communications will inevitably relegate people to supervisory roles. That's especially true if, as expected, lethal weapons are deployed en masse in drone swarms. Many countries are working on them — and neither China, Russia, Iran, India or Pakistan have signed a U.S.-initiated pledge to use military AI responsibly.

Space

A NASA Spacecraft Could Carry Your Name to Jupiter in 2024 (msn.com) 51

An anonymous reader shared this report from the Washington Post: In 2024, a new spacecraft will hurtle toward Jupiter in a bid to learn whether its moon Europa is capable of supporting life. The craft will carry more than high-tech sensors: It also will bear a poem and hundreds of thousands of human names.

Yours could be one of them.

NASA is asking people to submit their names ahead of the mission's October 2024 launch. Those submitted by the end of 2023 will go into space on the Europa Clipper spacecraft, which should enter Jupiter's orbit in 2030... They'll eventually be stenciled onto a dime-sized microchip in microscopic writing, then attached to a metal plate engraved with the poem that will accompany the craft.

700,000 names have been submitted so far — and they'll all be carried a distance of over 1.8 billion miles.

They'll travel through space with a poem that ends by describing what we humans on earth are made of — including "a need to call out through the dark."
Space

The Most Powerful Cosmic Ray Since the Oh-My-God Particle Puzzles Scientists (nature.com) 63

Scientists have detected the most powerful cosmic ray seen in more than three decades. But the exact origin of this turbocharged particle from outer space remains a mystery, with some suggesting that it could have been generated by unknown physics. From a report: The puzzling cosmic ray had an estimated energy of 240 exa-electron volts (EeV; 10^18 volts), making it comparable to the most powerful cosmic ray ever detected, aptly named the Oh-My-God particle, which measured at around 320 EeV when it was discovered in 1991. The findings were published today in Science.

"It's amazing because you have to think of what could produce such high energy," says Clancy James, an astronomer at Curtin University in Perth, Australia. A cosmic ray, despite its name, is actually a high-energy subatomic particle -- often a proton -- that zips through space at close to the speed of light. In their ultra-high energy form, cosmic rays have energy levels that exceed one EeV, which is around one million times greater than those reached by the most powerful human-made particle accelerators. Cosmic rays with energies of more than 100 EeV are rarely spotted -- fewer than one of these particles arrive on each square kilometre of Earth each century.

Robotics

NYC Will Soon Be Home To 15 Robot-Run Vegetarian Restaurants From Chipotle's Founder (eater.com) 60

The founder of Chipotle is opening a new endeavor called Kernel, a vegetarian fast-casual restaurant that will be operated mostly by robots. Steve Ells is opening at least 15 locations of Kernel, the first by early 2024; the remainder are on track for NYC in the next two years, a spokesperson confirms. From a report: Kernel will serve vegetarian sandwiches, salads, and sides, made in a space that's around 1,000 square-feet or smaller. Each location would employ three workers, the Wall Street Journal reported, "rather than the dozen that many fast-casual eateries have working." The menu pricing will be on par with Chipotle's, and, Ells says, the company will pay more and offer better benefits for actual humans working than other chains.

As you'd expect from the former CEO of Chipotle -- which had at least five foodborne illness outbreaks between 2015 and 2018, costing the company $25 million per the Justice Department -- "the new system's design helps better ensure food safety," Ells told the Journal. It has taken $10 million in his personal funds to start Kernel, along with $36 million from investors. The company suggests customers may not want much interaction with other people -- and neither do CEOs. "We've taken a lot of human interaction out of the process and left just enough," he told the Journal. Yet in a 2022 study on the future of dining out conducted by commerce site, PYMNTS, of 2,500 people surveyed, 63 percent of diners believe restaurants are becoming increasingly understaffed, and 39 percent said that they are becoming less personal.

NASA

NASA Chooses Blue Origin's Rocket To Launch Smallsat Mission To Mars (spacenews.com) 71

NASA selected Blue Origin in February to launch the Escape and Plasma Acceleration and Dynamics Explorers (ESCAPADE) mission, a pair of smallsats that will study the interaction of the solar wind with the magnetosphere of Mars. The space agency now expects the mission will be on the first launch of Blue Origin's New Glenn launch vehicle next year. SpaceNews reports: Neither Blue Origin nor NASA disclosed exactly where in the manifest of New Glenn launches ESCAPADE would take place. "It will be an early New Glenn mission and we're going to be ready," one Blue Origin executive, Ariane Cornell, said at the Satellite 2023 conference in March. At a Nov. 20 meeting of the NASA Advisory Council's human exploration and operations committee, Bradley Smith, director of NASA's Launch Services Office, said he was "incredibly excited" about the ESCAPADE launch, which he said was scheduled for about one year. His charts, though, and past presentations, listed an August 2024 launch for ESCAPADE.

"It's an incredibly ambitious first launch for New Glenn and we really appreciate the partnership," he said. Later in the committee meeting, he confirmed that NASA expected ESCAPADE to be on the inaugural New Glenn launch. "We will very likely be the very first launch of New Glenn," he said. That is acceptable, Smith said, since ESCAPADE is what NASA characterizes as a "class D" mission with a higher tolerance for risk. "We're willing to take a little bit of risk with a price tag and a mission assurance model that reflects that risk."

Besides the inherent technical risks in the first launch of a new rocket, there are also schedule risks. New Glenn development is years behind the original schedule Blue Origin put forward. The company has not provided recent updates about progress towards a first launch of the rocket, although Jarrett Jones, senior vice president for New Glenn at Blue Origin, said at World Satellite Business Week in September that the first flight vehicle would arrive at a Florida integration facility by the end of the year, with the company planning "multiple" launches of New Glenn in 2024.

Space

Deep Space Astronauts May Be Prone To Erectile Dysfunction, Study Finds (theguardian.com) 85

As if homesickness, wasting muscles, thinner bones, an elevated cancer risk, the inescapable company of overachievers and the prospect of death in the endless vacuum of space were not enough to contend with, male astronauts may return from deep space prone to erectile dysfunction, scientists say. From a report: In what is claimed to be the first study to assess the impact of galactic radiation and weightlessness on male sexual health, Nasa-funded researchers found that galactic cosmic rays, and to a lesser extent microgravity, can impair the function of erectile tissues, with effects lasting potentially for decades. Raising their concerns in a report on Wednesday, the US researchers said they had identified "a new health risk to consider with deep space exploration." They called for the sexual health of astronauts to be closely monitored on their return from future deep space missions, noting that certain antioxidants may help to counteract the ill-effects by blocking harmful biological processes.

"While the negative impacts of galactic cosmic radiation were long-lasting, functional improvements induced by acutely targeting the redox and nitric oxide pathways in the tissues suggest that the erectile dysfunction may be treatable," said Dr Justin La Favor, an expert in neurovascular dysfunction at Florida State University and a senior author on the study. The warning comes amid a renewed focus on deep space missions, with Nasa and other major space agencies preparing for long-term expeditions to the moon and more ambitious voyages to Mars. Nasa's Artemis programme aspires to send astronauts to the moon as early as next year, with crewed missions to Mars tentatively lined up for as early as 2040.

Space

Earth Receives Laser-Beamed Message From 10 Million Miles Away (space.com) 31

Rahul Rao reports via Space.com: On Nov. 14, NASA picked up a laser signal fired from an instrument that launched with the Psyche spacecraft, which is currently more than 10 million miles (16 million kilometers) from Earth and heading toward a mysterious metal asteroid. (The spacecraft is at more than 40 times the average distance of Earth's moon, and still voyaging afar.) The moment marked the first successful test of NASA's Deep Space Optical Communications (DSOC) system, a next-generation comms link that sends information not by radio waves but instead by laser light. It's part of a series of tests NASA is doing to speed up communications in deep space, on different missions. "Achieving first light is a tremendous achievement. The ground systems successfully detected the deep space laser photons from DSOC," Abi Biswas, the system's project technologist at NASA's Jet Propulsion Laboratory (JPL) in Southern California, said in an agency statement.

"And we were also able to send some data, meaning we were able to exchange 'bits of light' from and to deep space," Biswas added.
Microsoft

Microsoft Hires Ex-OpenAI Leaders Altman and Brockman To Lead New AI Group (techcrunch.com) 63

Microsoft has hired OpenAI co-founders Sam Altman and Greg Brockman to head up a "new advanced AI research team," the software conglomerate's chief Satya Nadella said Monday, capping three days of intense discussions following the unexpected decision by OpenAI's board to dismiss Altman. From a report: Many OpenAI members, including the co-founder Brockman, left the firm in protest last week. Altman will serve as the chief executive of the new AI group at Microsoft, Nadella said. "We've learned a lot over the years about how to give founders and innovators space to build independent identities and cultures within Microsoft, including GitHub, Mojang Studios, and LinkedIn, and I'm looking forward to having you do the same." Nadella said Altman and Brockman will be joined by "colleagues." Former OpenAI top talent Szymon Sidor, Jakub Pachocki, Aleksander Madry are joining Microsoft with "more" to follow suit, Brockman said in a post on X.
Supercomputing

Linux Foundation Announces Intent to Form 'High Performance Software Foundation' (linuxfoundation.org) 5

This week the Linux Foundation "announced the intention to form the High Performance Software Foundation.

"Through a series of technical projects, the High Performance Software Foundation aims to build, promote, and advance a portable software stack for high performance computing by increasing adoption, lowering barriers to contribution, and supporting development efforts." As use of high performance computing becomes ubiquitous in scientific computing and digital engineering, and AI use cases multiply, more and more data centers deploy GPUs and other compute accelerators. The High Performance Software Foundation intends to leverage investments made by the United States Department of Energy's Exascale Computing Project, the EuroHPC Joint Undertaking, and other international projects in accelerated high performance computing to exploit the performance of this diversifying set of architectures. As an umbrella project under the Linux Foundation, HPSF intends to provide a neutral space for pivotal projects in the high performance software ecosystem, enabling industry, academia, and government entities to collaborate together on the scientific software stack.

The High Performance Software Foundation already benefits from strong support across the high performance computing landscape, including leading companies and organizations like Amazon Web Services, Argonne National Laboratory, CEA, CIQ, Hewlett Packard Enterprise, Intel, Kitware, Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, NVIDIA, Oak Ridge National Laboratory, Sandia National Laboratory, and the University of Oregon.

Its first open source technical projects include:
  • Spack: the high performance computing package manager
  • Kokkos: a performance-portable programming model for writing modern C++ applications in a hardware-agnostic way.
  • AMReX: a performance-portable software framework designed to accelerate solving partial differential equations on block-structured, adaptively refined meshes.
  • WarpX: a performance-portable Particle-in-Cell code with advanced algorithms that won the 2022 Gordon Bell Prize
  • Trilinos: a collection of reusable scientific software libraries, known in particular for linear, non-linear, and transient solvers, as well as optimization and uncertainty quantification.
  • Apptainer: a container system and image format specifically designed for secure high-performance computing.
  • VTK-m: a toolkit of scientific visualization algorithms for accelerator architectures.
  • HPCToolkit: performance measurement and analysis tools for computers ranging from laptops to the world's largest GPU-accelerated supercomputers.
  • E4S: the Extreme-scale Scientific Software Stack
  • Charliecloud: high performance computing-tailored, lightweight, fully unprivileged container implementation.

Space

SpaceX's Starship Reaches Outer Space Before Intentional Detonation (cnn.com) 125

CNN reports SpaceX made a second attempt to successfully launch Starship, the most powerful rocket ever constructed. The uncrewed rocket took off just after 7 a.m. CT (8 a.m. ET). The rocket took off as intended, making it roughly 8 minutes into flight before SpaceX confirmed it had to intentionally explode the Starship spacecraft as it flew over the ocean...

This mission comes after months of back-and-forth with federal regulators as SpaceX has awaited a launch license. The company is also grappling with pushback from environmentalists...

After separating from the Super Heavy rocket booster, the Starship spacecraft soared to an altitude of approximately 93 miles (150 kilometers) before SpaceX lost contact, according to a statement issued by the company. For context, the U.S. government considers 50 miles (80 kilometers) above Earth's surface the edge of outer space...

SpaceX is OK with rockets exploding in the early stages of development. That's because the company uses a completely different approach to rocket design than, say, NASA. The space agency focuses on building one rocket and strenuously designing and testing it on the ground before its first flight — taking years but all but guaranteeing success on the first launch. SpaceX, however, rapidly builds new prototypes and is willing to test them to their breaking point because there's usually a spare nearby. During a drive by the company's facilities on Friday — four Starship spacecraft and at least two Super Heavy boosters could be seen from public roadways.

CNN reminds readers that "so far in 2023 alone, the Falcon 9 has launched more than 70 spaceflights...

"Elon Musk described Starship as the vehicle that underpins SpaceX's founding purpose: sending humans to Mars for the first time. NASA has its own plans for the rocket."
Communications

US Space Force Monitors Satellites in the 'Robotic Battlefield' of Space (nytimes.com) 15

"At least 44,500 space objects now circle Earth," reports the New York Times magazine, "including 9,000 active satellites and 19,000 significant pieces of debris."

The article notes a threat assessment from U.S. Space Force Chief Master Sergeant Ron Lerch: What's most concerning isn't the swarm of satellites but the types. "We know that there are kinetic kill vehicles," Lerch said — for example, a Russian "nesting doll" satellite, in which a big satellite releases a tiny one and the tiny one releases a mechanism that can strike and damage another satellite. There are machines with the ability to cast nets and extend grappling hooks, too. China, whose presence in space now far outpaces Russia's, is launching unmanned "space planes" into orbit, testing potentially unbreakable quantum communication links and adding A.I. capabilities to satellites.

An intelligence report, Lerch said, predicted the advent, within the next decade, of satellites with radio-frequency jammers, chemical sprayers and lasers that blind and disable the competition. All this would be in addition to the cyberwarfare tools, electromagnetic instruments and "ASAT" antisatellite missiles that already exist on the ground. In Lerch's assessment, space looked less like a grand "new ocean" for exploration — phrasing meant to induce wonder that has lingered from the Kennedy administration — and more like a robotic battlefield, where the conflicts raging on Earth would soon extend ever upward.

One interesting detail from the article. "[I]f a requirement to 'blind and deafen' an enemy's satellites were to arise from U.S. Space Command, the Space Force could help fulfill the order. The means would most likely not be "kinetic" — some form of physical or explosive contact — but electronic, a weapon of code-related stealth, or perhaps a kind of debilitating high-energy burst."

And Space Force's highest-ranking officer, General Chance Saltzman, describes the kind of new military calculations made, for example, when Ukraine moved its communications to Starlink satellites: "The Russians are trying to interrupt it," he said, "and they're not having very good success." And the takeaway is that proliferated systems of many small machines in low orbit can be more technologically resilient to hacking and disruption than a few big machines in higher orbits... [W]hile small satellites in a large configuration could potentially be a more expensive investment than two or three megasatellites, the shift could be worthwhile. If an adversary believes that it cannot achieve a military objective, Saltzman remarked, it will hesitate to cross "a threshold of violence." No conflicts. No debris. No crisis.
Games

Valve Celebrates 25 Years of Half-Life With Feature-Packed Steam Update (arstechnica.com) 49

An anonymous reader quotes a report from Ars Technica: This Sunday, November 19, makes a full 25 years since the original Half-Life first hit (pre-Steam) store shelves. To celebrate the anniversary, Valve has uploaded a feature-packed "25th anniversary update" to the game on Steam, and made the title free to keep if you pick it up this weekend. Valve's 25th Anniversary Update page details a bevy of new and modernized features added to the classic first-person shooter, including:

- Four new multiplayer maps that "push the limits of what's possible in the Half-Life engine"
- New graphics settings, including support for a widescreen field-of-view on modern monitors and OpenGL Overbright lighting (still no official ray-tracing support, though-leave that to the modders)
- "Proper gamepad config out of the box" (so dust off that Gravis Gamepad Pro)
- Steam networking support for easier multiplayer setup
- "Verified" support for Steam Deck play ("We failed super hard" on the first verification attempt, Valve writes)
- Proper UI scaling for resolutions up to 3840x1600
- Multiplayer balancing updates (because 25 years hasn't been enough to perfect the meta)
- New entity limits that allow mod makers to build more complex mods
- A full software renderer for the Linux version of the game
- Various bug fixes
- "Removed the now very unnecessary 'Low video quality. Helps with slower video cards' setting"

In addition, the new update includes a host of restored and rarely seen content, including:

- Three multiplayer maps from the "Half-Life: Further Data" CD-ROM: Double Cross, Rust Mill, and Xen DM
- Four restored multiplayer models: Ivan the Space Biker, Proto-Barney (from the alpha build), a skeleton, and Too Much Coffee Man (from "Further Data")
- Dozens of "Further Data" sprays to tag in your multiplayer matches
- The original Half-Life: Uplink demo in playable form

Technology

Proton Mail CEO Calls New Address Verification Feature 'Blockchain in a Very Pure Form' (fortune.com) 28

Proton Mail, the leading privacy-focused email service, is making its first foray into blockchain technology with Key Transparency, which will allow users to verify email addresses. From a report: In an interview with Fortune, CEO and founder Andy Yen made clear that although the new feature uses blockchain, the key technology behind crypto, Key Transparency isn't "some sketchy cryptocurrency" linked to an "exit scam." A student of cryptography, Yen added that the new feature is "blockchain in a very pure form," and it allows the platform to solve the thorny issue of ensuring that every email address actually belongs to the person who's claiming it.

Proton Mail uses end-to-end encryption, a secure form of communication that ensures only the intended recipient can read the information. Senders encrypt an email using their intended recipient's public key -- a long string of letters and numbers -- which the recipient can then decrypt with their own private key. The issue, Yen said, is ensuring that the public key actually belongs to the intended recipient. "Maybe it's the NSA that has created a fake public key linked to you, and I'm somehow tricked into encrypting data with that public key," he told Fortune. In the security space, the tactic is known as a "man-in-the-middle attack," like a postal worker opening your bank statement to get your social security number and then resealing the envelope.

Blockchains are an immutable ledger, meaning any data initially entered onto them can't be altered. Yen realized that putting users' public keys on a blockchain would create a record ensuring those keys actually belonged to them -- and would be cross-referenced whenever other users send emails. "In order for the verification to be trusted, it needs to be public, and it needs to be unchanging," Yen said.

Space

FAA Clears SpaceX To Launch Second Starship Flight (cnbc.com) 19

The FAA has cleared SpaceX to launch its second spaceflight attempt of its Starship rocket. CNBC reports: SpaceX posted on the social media platform X shortly after the greenlight that it was "targeting Friday, November 17 for Starship's second flight test." A two-hour launch window will begin at 8 a.m. ET. SpaceX plans to livestream the Starship launch, with a webcast beginning about 30 minutes before lift off. Starship first launched in April, achieving flight for a few minutes before exploding mid-air, severely damaging the ground infrastructure and raising environmental concerns. The FAA in coordination with the U.S. Fish and Wildlife Service launched a safety review prior to issuing a new flight license for the second attempt.

FWS determined that the rocket launch and subsequent damage to the pad infrastructure had no long-term negative effects on the surrounding ecology, according to an agency report released Wednesday. Still, SpaceX will help mitigate damage to the area by reducing sound waves and vibrations, assisting in fire suppression, and providing launch pad protection, the agency said. As a result, "the FAA determined SpaceX met all safety, environmental, policy and financial responsibility requirements," the agency said in a statement Wednesday.

Space

Planet Where It Rains Sand Revealed By Nasa Telescope (theguardian.com) 22

Nasa's James Webb space telescope has revealed a planet where specks of sand fall as rain, in groundbreaking observations. From a report: The planet, Wasp-107b, lies 200 light years away in the Virgo constellation and had already caught the attention of astronomers because it is very large but very light, earning it the nickname the "candy floss" planet. The latest observations give an unprecedented glimpse of a strange and exotic world beyond our solar system that features silicate sand clouds and rain, scorching temperatures, raging winds and the distinct burnt-matches scent of sulphur dioxide. "Our knowledge of other planets is based on what we know from Earth," said Prof Leen Decin, of the Catholic Institute (KU) Leuven and first author of the research. "That's a very restricted knowledge."

The planet was discovered in 2017 after astronomers spotted a telltale periodic flickering of light from its host star each time the planet passed in front of it. "It's like a fly in front of a street lamp," said Decin. "You see a slight dimming of the light." James Webb takes these observations to the next level by measuring starlight that is filtered through the planet's atmosphere. Because different elements absorb different wavelengths of light, the spectrum of starlight indicates which gases are present. Wasp-107b is similar in mass to Neptune but almost the size of Jupiter, and its vast, diffuse nature allows the James Webb telescope to peer deep into its atmosphere.

Space

Airbus Introduces 'Detumbler' Device To Address Satellite Tumbling In Low Earth Orbit (spacedaily.com) 23

Airbus has launched an innovative "detumbler" device designed to mitigate the risks posed by tumbling satellites in space. Space Daily reports: The Detumbler, a brainchild of Airbus and supported by the French Space Agency CNES under their Tech4SpaceCare initiative, was unveiled on Saturday, November 11. This magnetic damping device, weighing approximately 100 grams, is engineered to be attached to satellites nearing the end of their operational lives. Its purpose is to prevent these satellites from tumbling, a common issue in orbital flight dynamics, especially in LEO. The device features a central rotor wheel and magnets that interact with the Earth's magnetic field, effectively damping unwanted motion.

Airbus' development of the Detumbler commenced in 2021. Its operational principle is simple yet innovative. When a satellite functions normally, the rotor behaves akin to a compass, aligning with the Earth's magnetic field. However, if the satellite begins to tumble, the movement of the rotor induces eddy currents, creating a friction torque that dampens this motion. The design of the Detumbler involves a stator housing, complete with a bottom plate and top cover, along with the rotor comprising the central axle, rotor wheel, and magnets.

Tumbling satellites, particularly those in LEO, pose a significant challenge for future active debris removal missions. Dead satellites naturally tend to tumble due to orbital flight dynamics. The introduction of the Airbus Detumbler could revolutionize this scenario, making satellites easier to capture during debris-clearing missions and enhancing the overall safety and sustainability of space operations.
Airbus is expected to perform an in-orbit demonstration of the Detumbler in early 2024.
ISS

Lost NASA Tool Bag Can Be Seen With Binoculars (nbcnews.com) 74

A tool bag that astronauts accidentally let float away during a routine spacewalk at the International Space Station is now orbiting Earth and can be seen with a pair of binoculars. NBC News reports: The bag drifted away from the space station this month when NASA astronauts Jasmin Moghbeli and Loral O'Hara were performing maintenance on the exterior of the orbiting outpost. "During the activity, one tool bag was inadvertently lost," NASA officials wrote Nov. 1 in a blog post detailing the outcome of the spacewalk. "Flight controllers spotted the tool bag using external station cameras. The tools were not needed for the remainder of the spacewalk."

The bag is now circling the planet in low-Earth orbit, but NASA said there's little danger of the tools hitting the International Space Station. "Mission Control analyzed the bag's trajectory and determined that risk of recontacting the station is low and that the onboard crew and space station are safe with no action required," the agency said in the blog post. For now then, the lost tool bag has become a new artificial "star" in the night sky.
The tool bag is orbiting about a minute ahead of the space station and may be bright enough to see with a pair of binoculars. "Skywatchers who want to try to spot the tool bag in orbit should head out on a clear night and first determine when the International Space Station is passing overhead," reports NBC News. "The tool bag will likely remain visible in the night sky for a few months, before its orbit slowly degrades and it eventually falls toward Earth."

You can track the ISS via NASA's Spot the Station website.
Earth

A Supernova 'Destroyed' Some of Earth's Ozone For a Few Minutes In 2022 53

An anonymous reader quotes a report from the New York Times: On Oct. 9, 2022, telescopes in space picked up a jet of high energy photons careening through the cosmos toward Earth, evidence of a supernova exploding 1.9 billion light-years away. Such events are known as gamma ray bursts, and astronomers who have continued studying this one said it was the "brightest of all time." Now, a team of scientists have discovered that this burst caused a measurable change in the number of ionized particles found in Earth's upper atmosphere, including ozone molecules, which readily absorb harmful solar radiation.

"The ozone was partially depleted -- was destroyed temporarily," said Pietro Ubertini, an astronomer at the National Institute of Astrophysics in Rome who was involved in discovering the atmospheric event. The effect was detectable for just a few minutes before the ozone repaired itself, so it was "nothing serious," Dr. Ubertini said. But had the supernova occurred closer to us, he said, "it would be a catastrophe." The discovery, reported Tuesday in a paper published in the journal Nature Communications, demonstrates how even explosions that occur far from our solar system can influence the atmosphere, which can be used as a giant detector for extreme cosmic phenomena.

To study the effects of last year's gamma ray burst on Earth, Dr. Ubertini and his colleagues looked for signals at the top of the ionosphere using data from the China Seismo-Electromagnetic Satellite, an orbiter designed to study changes in the atmosphere during earthquakes. They identified a sharp jump in the electric field at the top of the ionosphere, which they correlated to the gamma ray burst signal measured by the European Space Agency's International Gamma-Ray Astrophysics Laboratory, a mission that launched in 2002 to observe radiation from faraway celestial objects. The researchers found that the electric field rose by a factor of 60 as gamma rays ionized (essentially knocking away electrons from) ozone and nitrogen molecules high in the atmosphere. Once ionized, the molecule is unable to absorb any ultraviolet radiation, temporarily exposing Earth to more of the sun's damaging rays.
Japan

Japan To Create $6.6 Billion Fund To Develop Outer Space Industry (japantimes.co.jp) 22

Japan plans to establish a new 1 trillion yen ($6.6 billion) fund to develop the country's outer space industry. "We believe it is a necessary fund to speed up our country's space development so we don't lag behind the increasingly intensifying international competition," Sanae Takaichi, minister in charge of space development, said in a news conference last week. The Japan Times reports: The fund will be allocated over a 10-year period for the Japan Aerospace Exploration Agency (JAXA), an Education, Culture, Sports, Science and Technology Ministry spokesperson said. Some 300 billion yen has been set aside for the fund in the latest supplementary budget approved by the Cabinet on Friday. The funding, which will support JAXA and the development of Japan's space industry, was a response to increased public and private sector focus on space activities.

Back in June, Tokyo unveiled a Space Basic Plan, detailing budgetary support for innovation in the private sector as an area of business growth. At the same time, it also unveiled a Space Security Initiative, which labeled space "a major arena for geopolitical competition for national power over diplomacy, defense, economic, and intelligence, as well as the science and technology and innovation that support these national powers."

United States

US Pledges Work Toward More Airwaves for Wireless Providers Facing Surging 5G Demand (bloomberg.com) 57

The Biden administration on Monday told US agencies to work toward giving up use of some telecommunications airwaves in order to make room for commercial providers facing surging demand for fast 5G services. From a report: The plan, called the National Spectrum Strategy, called for "detailed studies" to be concluded within two years. The document provides for "more transparent, more coordinated" efforts at airwaves management, Lael Brainard, director of the National Economic Council, said.

"We have to make better use of the airwaves we have," said Alan Davidson, an assistant secretary of commerce who will help lead further steps to fulfill the strategy. Commercial providers have long sought more access to airwaves occupied by US agencies, saying that government uses at times aren't efficient and they should share space with new commercial technologies. Spectrum refers to the array of airwaves that carry everything from voice calls to satellite transmissions to signals for industrial machinery.

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