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Yesterday β€” 22 July 2026Ars Technica

Microsoft brings original Xbox backward compatibility to Windows PCs

22 July 2026 at 16:36

For years, Microsoft has leaned heavily into extensive backward compatibility across multiple generations of Xbox hardware as a major selling point for its consoles. Today, that effort expands past the console ecosystem, making select original Xbox titles officially playable (and purchasable) on Windows PCs for the first time.

The appropriately and bluntly named "Xbox Backward Compatibility on PC" program kicks off today with compatibility for BLiNX: The Time Sweeper, Conker: Live and Reloaded, Crimson Skies: High Road to Revenge, and Fuzion Frenzy. PC players can download each title for $10, but those with Xbox Game Pass subscriptions or existing digital licenses for these games on console will have instant access without an additional purchase (no such luck if you simply stick an original Xbox disc in your PC drive, alas).

Playing these older Xbox titles on PC enables some bonus graphical features like Vsync support, anisotropic filtering, enhanced anti-aliasing, and up to 4x resolution scaling of the original SD signal (to 2560x1920). Games are limited to their original frame rates and aspect ratios, though, which means a 30 fps 4:3 image in most cases. Microsoft says this first batch of games should be playable with 11-year-old GTX 950 graphics hardware, but recommends a 2017-era GTX 1070 Ti with 8GB of VRAM for best performance.

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Β© Reddit

Before yesterdayArs Technica

The Space Force is now seeking to buy up to $30 billion in rocket launches

20 July 2026 at 16:30

It seems as though $5.6 billion wasn't enough. That was the news from the US Space Force on Friday, when military officials announced they were tripling the maximum value of one of the service's National Security Space Launch contracts to $17 billion.

The expansion of the Space Force's National Security Space Launch (NSSL) Phase 3 contract comes as the Pentagon signals rising demand for military satellite launches. The NSSL program is set up to allow Space Systems Command, which oversees the Space Force's launch program, to select from a pool of launch providers for individual missions to deliver the military's satellites to orbit.

The NSSL program has two parts. Lane 1 covers the Space Force's more risk-tolerant missions, such as medium-lift launches with experimental payloads or rideshare missions carrying satellites for the Pentagon's surveillance or data relay constellations. Lane 2 includes higher-priority strategic missions, like the government's largest and most expensive spy satellites, or radiation-hardened communications satellites designed to survive a nuclear war.

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Β© SpaceX

The Space Force is now seeking to buy up to $30 billion in rocket launches

20 July 2026 at 16:30

It seems as though $5.6 billion wasn't enough. That was the news from the US Space Force on Friday, when military officials announced they were tripling the maximum value of one of the service's National Security Space Launch contracts to $17 billion.

The expansion of the Space Force's National Security Space Launch (NSSL) Phase 3 contract comes as the Pentagon signals rising demand for military satellite launches. The NSSL program is set up to allow Space Systems Command, which oversees the Space Force's launch program, to select from a pool of launch providers for individual missions to deliver the military's satellites to orbit.

The NSSL program has two parts. Lane 1 covers the Space Force's more risk-tolerant missions, such as medium-lift launches with experimental payloads or rideshare missions carrying satellites for the Pentagon's surveillance or data relay constellations. Lane 2 includes higher-priority strategic missions, like the government's largest and most expensive spy satellites, or radiation-hardened communications satellites designed to survive a nuclear war.

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Β© SpaceX

The first trailer for Avengers: Doomsday is finally here

20 July 2026 at 10:33

With San Diego Comic-Con kicking off later this week, Marvel Studios has released the first official full trailer for Avengers: Doomsday, the penultimate film in the MCU's Phase Six and the end of the so-called "Multiverse Saga."

(Spoilers for prior relevant MCU films below.)

Marvel Studios originally planned to build its Phase Six Avengers arc (The Kang Dynasty) around Jonathan Majors’ Kang the Conqueror (and associated variants), introduced in Loki and Ant-Man and the Wasp: Quantumania. But then Majors was convicted of domestic violence, and Marvel fired the actor soon after. That meant the studio needed to retool its Phase Six plans, culminating in the announced return of the Russo brothers, who directed four of the Marvel Cinematic Universe’s most successful films, which brought in more than $6 billion at the global box office.

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Β© Marvel Studios

The Pentagon's Space Development Agency hasn't moved as fast as anyone would like

17 July 2026 at 15:19

The Space Development Agency was established in 2019 to help speed up the deployment of US military space systems by sidestepping the Pentagon's traditional sluggish bureaucracy.

Seven years later, SDA is finally launching its first batches of operational satellites, just as the Pentagon plans to shutter the semi-autonomous agency and fold it back into the Space Force's procurement pipeline, newly reorganized under several program acquisition executives in a bid to streamline weapons buying.

SDA's fate is not a surprise, and lawmakers in both houses of Congress have backed the agency's closure in drafts of this year's National Defense Authorization Act.

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Β© SpaceX

SpaceX scrubs Starship launch after some of its engines didn't start

16 July 2026 at 20:02

SpaceX called off a test flight of its powerful Starship rocket and Super Heavy booster as the countdown clock reached zero Thursday at the company'sΒ spaceport in South Texas.

The launch team at Starbase, Texas, just north of the US-Mexico border, aimed to launch the more than 400-foot-tall rocket at 5:45 pm local time (6:45 pm EDT; 22:45 UTC). The countdown proceeded smoothly throughout the day, culminating in the loading of more than 11.5 million pounds of liquid methane and liquid oxygen into the two-stage rocket.

But the computers controlling the countdown called an abort during the Super Heavy booster's engine startup sequence. SpaceX scrubbed the launch attempt, and engineers began preparations to drain the rocket's propellant tanks. Officials did not immediately announce when they plan to try to launch again.

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Β© SpaceX

Now, even Russia's most elite hackers are using Clickfix to infect devices

16 July 2026 at 15:28

One of the Russian government’s most elite hacking groups has adopted an attack, known as Clickfix, to compromise devices belonging to sensitive organizations in Ukraine, the latter country’s CERT center is warning.

Clickfix has emerged as an effective attack technique that attackers, primarily financially motivated criminals, began using in the last year or so. Websites under the control of the attackers display a CAPTCHA that requires the visitor to copy a jumble of text and paste it into the terminal. The text contains scripts that, once entered, perform malicious actions, typically by installing malware or exfiltrating sensitive data. Ukraine’s CERT said Wednesday that Sandworm, an advanced hacking unit inside the GRU, Russia’s military intelligence arm, is now using the technique.

"GhettoVibe," "ScoutCurl," and many more

The Clickfix attacks began in the spring and have continued through the summer. The campaign has resulted in the network compromise of at least one organization when a connected device was found to be infected by FreakyPoll, the name of one of Sandworm’s custom malware packages. Ukrainian authorities discovered 10 compromised websites that displayed a PowerShell command as part of a fake CAPTCHA that said it had to be passed to ensure a real human was behind the visiting device’s keyboard.

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Β© Getty Images

Linus Torvalds to critics of AI coding in Linux: "Fork it. Or just walk away."

16 July 2026 at 15:18

The widespread introduction of AI-powered coding tools has led to some dramatic splits between those integrating those tools into their workflows and anti-AI absolutists who don't want large language model-generated code anywhere near their projects. When it comes to the Linux kernel, though, creator and top-level maintainer Linus Torvalds said he is "willing to absolutely put my foot down" in support of using AI tools to improve the long-standing open source project.

Writing in a lengthy post on the Linux kernel mailing list this week, Torvalds said that "Linux is not one of those anti-AI projects, and if somebody has issues with that, they can do the open-source thing and fork it. Or just walk away."

The statement came amid a lengthy thread arguing about the use of Sashiko, an "agentic Linux kernel code review system" that its creators claim can, in tests, independently find 53.6 percent of the bugs that would end up being fixed by human coders in later commits. But the tool can also waste maintainers' time by sending "false positive" reports of bugs that don't exist, at a rate Sashiko's maintainers estimate is "well within [the] 20% range."

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Β© Getty Images

Could China and Russia really destroy Starlink? Only with a boomerang.

16 July 2026 at 12:19

One week ago, three widely respected European news outlets published the results of an investigation into what they described as a "joint plan" by China and Russia to "defeat Elon Musk's Starlink."

The story was the product of a long-running inquiry by The Insider, Der Spiegel, and Le Monde. Reporters at those publications said they reviewed a cache of documents detailing growing military cooperation between China and Russia. The documents covered discussions between the nuclear powers on integrated air and missile defense systems, autonomous "swarm" loitering munitions, next-generation armored vehicles, and military aviation, the report said.

According to the papers, the investigation found evidence of a partnership between China and Russia in the field of space weapons far deeper than either country has acknowledged. One particular focus for China and Russia has been developing strategies to counter SpaceX's Starlink satellite broadband network.

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Β© SpaceX

Hundreds rally at Bethesda HQ to protest Xbox layoffs, and Ars was there

15 July 2026 at 18:36

ROCKVILLE, Marylandβ€”Hundreds of Bethesda Game Studios and Zenimax Online Studios employees and their supporters braved nearly 100Β° F temperatures to protest sweeping layoffs across Xbox during a lunchtime rally in front of parent company Zenimax's headquarters today. The rally was one of fiveΒ today organized by Zenimax Workers United and its parent union, the Communication Workers of America, at offices across Texas, California, and Montreal.

Attendees held up signs with messages like "Layoffs... layoffs never change" and "Our players deserve better" as union organizers and employees rallied the crowd with speeches and songs. The overwhelming message was one of solidarity and a willingness to push back against job cuts they say have decimated their development and quality assurance teams.

"It's about us building our movement and making sure that we get seen and we're visible," Bethesda technical producer and union volunteer organizer Nathan Hahn told Ars. "Because we want to make sure that we're not okay with these layoffs and that Xbox knows."

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Judge: Trump can’t deport researchers just for working in content moderation

15 July 2026 at 17:26

This week, the Coalition for Independent Technology Research (CITR) won a key battle in its fight to reverse a visa-restriction policy that the Trump administration had used to attempt to revoke green cards and deport non-US citizens who work on misinformation, disinformation, fact-checking, content moderation, compliance, and trust and safety.

In an opinion published Tuesday, US District Judge James Boasberg granted a preliminary injunction blocking the State Department from enforcing the policy until the CITR’s lawsuit is resolved.

On its face, the policy does not require visa denials or deportations. Instead, it authorizes immigration investigations into individuals suspected of helping foreign adversaries attempt to manipulate public opinion by suppressing US speech.

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Β© UCG / Contributor | Universal Images Group

Engineer identifies and explains every '90s computer seen in Jurassic Park

15 July 2026 at 17:04

Jurassic Park, while beloved as a film, has been the subject of snarky memes for the infamous line in which one of the characters declares, "This is a Unix system, I know this!" while using a computer with an unusual 3D file manager interface.

Despite the memes, the film's production team was meticulous in accurately sourcing the right PCs (and adjacent details) for the setsβ€”not too much of a surprise, given writer Michael Crichton's background with computing and his obsessive attention to detail in the book the film is based on.

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Β© Universal Pictures

A most improbable astronaut just went to space

15 July 2026 at 07:30

Anil Menon, a NASA flight surgeon, felt crushed nine years ago as his hopes and aspirations collapsed around him.

For the fourth time, he had diligently applied to become an astronaut at the US space agency, seeking to fulfill a lifelong dream. Although he made it to the final round, NASA had once again rejected his application at the end of the grueling process.

"I was so sad, and I admitted defeat," Menon said. "I just did not see a pathway forward. So I pretty much, at that point in time, gave up on being an astronaut. I thought there was a zero percent chance."

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Β© John Kraus/NASA

Sotheby's big T. rex auction raises concerns hype and wealth are upending science

15 July 2026 at 06:30

Forget the sale of the century. The auction house Sotheby’s has geared up for the sale of the epoch. On July 14 it opened live bidding on assorted fossils, but the piΓ¨ce de rΓ©sistance is lot 20, a rare 67-million-year-old Tyrannosaurus rex skeleton.

The specimenβ€”dubbed Gusβ€”is billed as one of the largest, most completeΒ T. rexesΒ ever found. Gus is expected to fetch up to $30 million and will go to the highest bidder, whether public museum or private collector. The latter have played an increasingly prominent role in buying fossils, with auction houses, according to paleontologists, contributing to the trend by building hype. But when private collectors swoop in and buy fossils at auction as luxury assets, those pieces of history are effectively lost to science.

By nearly all accounts, Gus is a big deal. In its description, Sotheby’s boasts that the specimen, which was discovered on a ranch in South Dakota, comprises β€œan incredible 183 fossil bone elements” making it β€œapproximately 61% complete by bone count.” The fossil remains have been mounted in a custom steel armature along with replicas of the missing bones. The result is a reconstructed skeleton posed as if in hot pursuit, its mouth full of dagger teeth ready to tear into prey.

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Β© Courtesy of Matthew Sherman/Sotheby's

SpaceX is gearing up for Starship's 13th test flight later this week

13 July 2026 at 21:17

The next test flight of SpaceX's Starship spacecraft and Super Heavy booster could take off as soon as Thursday, and much of the hour-long mission will look a lot like the last Starship flight in May.

But there are a few key differences for this launch, set to occur during a launch window that opens at 5:45 pm CDT (22:45 UTC) on Thursday. The most notable change is the inclusion of real, functioning Starlink satellites inside Starship's cargo bay. SpaceX previously tested the ship's payload deployment mechanism using simulators mimicking the mass and dimensions of the company's next-generation Starlink Version 3 broadband satellites.

This timeβ€”Starship's 13th full-scale test flight and the second to use SpaceX's newest version of Starshipβ€”technicians have installed 20 Starlink V3 satellites into the ship's deployer, a system of pulleys and cables designed to eject a stack of satellites one at a time through an opening on the side of the spacecraft. The satellites will not be part of SpaceX's operational network, but engineers will attempt to briefly establish laser communication links between the Starlink V3s and other spacecraft flying in low-Earth orbit. If successful, these links will validate Starlink V3's interoperability with SpaceX's previous generation of Starlink satellites.

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Β© SpaceX

OpenAI wants its new tool to do your work for you and with you

9 July 2026 at 17:25

Last year, when we tested out the "Agent Mode" in OpenAI's Atlas web browser, we complained that any automated tasks tended to stop after a few minutes, limiting its usefulness for ongoing or complex tasks. With today's release of ChatGPT Work, OpenAI says it has solved that problem with a new tool that can "stay with a project for hours if needed, and turn a goal into finished work."

The company is challenging users to evaluate ChatGPT Work by "giv[ing] it a task you already know well," such as analyzing a budget or preparing a sales meeting. The company also promises that ChatGPT Work can automate entire workflows, going from customer research to a campaign brief to locally tailored marketing assets, for instance. At the same time, the company stresses that the tool will wait for you to "approve important actions."

ChatGPT Work also integrates Scheduled Tasks, a souped-up version of cron jobs that can "take repetitive tasks off your plate" on a schedule or whenever a monitored event occurs. These tasks can keep going when you're away from your desk and can be monitored from your phone, the company says.

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Β© OpenAI

Lawsuit: Man used Grok to make 7K sex images of stepdaughter, then shot himself

8 July 2026 at 15:56

One of the most horrific cases of allegedly Grok-generated child sex images was shared in a proposed class action lawsuit that was expanded Tuesday. Now, young girls not only accuse X and xAI of building toxic AI "nudify" tools but also of shielding child predators by obstructing police investigations into Grok-generated child sex abuse materials (CSAM).

In March, a girl’s stepfather took his own life after cops discovered that he had used Grok to create 7,000 sexually explicit images using one photo taken when his stepdaughter was 11 years old, the amended complaint alleged.

Grok allowed the man to generate extreme images depicting incest and rape without flagging any harmful behavior, the complaint said. Seemingly, xAI’s child safety system only intervened after the man input a prompt for β€œgang rape.” That request sent a CyberTip to the National Center for Missing and Exploited Children (NCMEC), which alerted law enforcement to the AI CSAM.

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Β© NurPhoto / Contributor | NurPhoto

Google pays $250K for Linux vulnerability allowing guest VM escapes

8 July 2026 at 15:01

A Linux vulnerability that allows untrusted virtual machines to gain root access to host machines is one of two high-severity flaws to surface this week in the open source operating system.

The vulnerability resides in KVM, which is, in essence, a virtual machine app included in the kernel of many Linux distributions. The vulnerability, tracked as CVE-2026-53359, allows guest virtual machinesβ€”such as those used in cloud platforms to isolate one user’s instance from the host OS and other user instancesβ€”to break out of that container.

Januscape: A threat to cloud platforms

The vulnerability affects KVM running on both AMD and Intel processors. It exploits bugs residing in the KVM guest-side, the portion of the VM that consists of only resources like the OS or drivers present in the guest VM, rather than resources present on the host machine. The threat went unnoticed in the Linux kernel for 16 years.

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Miami-based City Labs achieves a first for commercial nuclear power in space

8 July 2026 at 13:26

The proliferation of nuclear power in space got a little more real Tuesday with the launch of a small satellite developed by a Florida-based company specializing in nuclear micro-power technology.

It's a long way from launching a bona fide nuclear reactor, a breakthrough that could help power a permanent Moon base and efficiently drive rockets throughout the Solar System. But you have to start somewhere.

The satellite from Miami-based City Labs is named BOHR, short for Betavoltaic Orbital High-Reliability, and it launched on a SpaceX rideshare mission Tuesday alongside 80 other payloads. SpaceX's Falcon 9 rocket released the BOHR satellite into an orbit between 350 and 400 miles (nearly 600 km) in altitude.

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Β© City Labs

The incredible shrinking Xbox: Five studios, 3,200 employees let go

6 July 2026 at 12:01

Last month, Xbox executives laid out some "hard truths" about Microsoft's struggling gaming division that they said would require a difficult "Xbox reset." This morning, Microsoft revealed the brutal shape of that "reset," announcing plans for 3,200 layoffs and the divestment of five smaller studios that the company has spent years acquiring and shepherding.

Half of those 3,200 layoffs are effective today, new Xbox CEO Asha Sharma wrote, while the other half will come by the end of Microsoft's 2027 fiscal year (which runs through June 30, 2027). CNBC cites "a person familiar with the matter" in reporting that these cuts amount to roughly 20 percent of the Xbox division.

When combined with 1,600 newly announced layoffs across the rest of Microsoft, the company as a whole is letting go of just over 2 percent of its workforce. But The Seattle Times reports that Microsoft's total headcount has remained relatively stable thanks to other hiring.

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Β© Aurich Lawson

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