geek

02 May 2026

Slashdot

New Lithium-Plasma Engine Passes Key Mars Propulsion Test

NASA engineers have tested a next-generation lithium-plasma electric propulsion system that reached 120 kilowatts, a new U.S. record and about 25 times the power of the electric thrusters on NASA's Psyche spacecraft. "Designing and building these thrusters over the last couple of years has been a long lead-up to this first test," said James Polk, who is a senior research scientist at NASA Jet Propulsion Laboratory. "It's a huge moment for us because we not only showed the thruster works, but we also hit the power levels we were targeting. And we know we have a good testbed to begin addressing the challenges to scaling up." Universe Today reports: While 120 kilowatts is a new record, NASA estimates it a future human mission to Mars will require 2 to 4 megawatts of power consisting of several thrusters and requiring more than 23,000 hours (958 days/2.6 years) of operation. To accomplish this, the thrusters would have to withstand more than 2,800 degrees Celsius (5,000 degrees Fahrenheit), which the thrusters achieved during testing. The reason for the extended operation is due to the estimated time of an entire human mission to Mars, which is estimated to be approximately 2.6 years. This is because the launch window to Mars only opens once every two years due to the orbital behaviors of both planets. While no mission has ever returned from the Red Planet, this same launch window works from Mars to Earth, too. When launched within this window, robotic spacecraft have traditionally taken approximately 6-7 months to reach Mars. However, a human mission would require a much larger spacecraft to accommodate the astronauts, food, fuel, water, and other mission-essential items. For the approximate 2.6-year mission, this would entail approximately 6-9 months traveling to Mars, followed by approximately 18 months on the surface of Mars until the next launch window opens, then another approximate 6-9 months back to Earth. However, having much less fuel due to the electric propulsion system could potentially alter this timeframe.

Amazon Stuck With Months of Repairs After Drone Strikes On Data Centers

An anonymous reader quotes a report from Ars Technica: Amazon's cloud customers will need to wait several more months before the US tech company can repair war-damaged data centers and restore normal operations in the Middle East. The announcement comes two months after Iranian drone strikes targeted three Amazon data centers in the United Arab Emirates and Bahrain -- meaning that full recovery from the cloud disruption could take nearly half a year in all. The Amazon Web Services (AWS) dashboard posted an April 30 update describing how its UAE and Bahrain cloud regions "suffered damage as a result of the conflict in the Middle East" and are unable to support customer applications. The update also said that "relevant billing operations are currently suspended while we restore normal operations" in a process that "is expected to take several months." That wording suggests Amazon will continue to avoid billing AWS customers in the affected regions -- ME-CENTRAL-1 and ME-SOUTH-1 -- after it initially waived all usage-related charges for March 2026 at an estimated cost of $150 million. AWS also "strongly" recommended that customers migrate resources to other cloud regions and rely on remote backups to restore any "inaccessible resources." Some customers, such as the Dubai-based super app Careem-which offers ride-hailing, household services, and food and grocery delivery -- were able to get back online quickly after doing an overnight migration to other data center servers.

01 May 2026

Slashdot

Microsoft's Xbox Mode Is Now Available For All Windows 11 PCs

Microsoft is rolling out Xbox mode to all Windows 11 PCs, bringing a full-screen Xbox PC app interface similar to Steam's Big Picture Mode. "Some players in select markets will be able to download the Xbox mode experience today, with availability expanding to more players in those markets over the next several weeks," says the Xbox team. The Verge reports: Xbox mode aims to try and bridge the gap between Xbox consoles and Windows, but its original debut felt like a beta on the Xbox Ally devices. "Since first introducing Xbox mode, formerly known as 'full screen experience,' on Windows handhelds, we've been listening closely to player feedback and continuing to evolve the experience across devices," says the Xbox team. "Those learnings directly shaped Xbox mode on Windows 11 PCs." Microsoft is also rolling out improvements to the Xbox Ally X handheld today, including a preview of its Auto SR upscaling technology. Xbox console owners are also getting a new dashboard update today, with the ability to disable Quick Resume on individual games and a feature to add custom colors to the dashboard.

Ars Technica

Study: AI models that consider user's feeling are more likely to make errors

Overtuning can cause models to "prioritize user satisfaction over truthfulness."

01 May 2026 10:23pm GMT

The RAMpocalypse has bought Microsoft valuable time in the fight against SteamOS

Op-ed: Valve has made a dent in Windows' gaming share, but can it keep going?

01 May 2026 10:00pm GMT

Man dies covered in necrotic lesions after amoebas eat him alive

Doctors suspect three factors, each unremarkable on its own, contributed to his fate.

01 May 2026 9:05pm GMT

30 Apr 2026

OSnews

Email is crazy

Email is like those creaking old Terminators from the '70s which continue to function without complaining. Designed for a world that doesn't exist anymore, it has optional encryption, no built-in auth, three⁺ retrofitted security layers bolted on top, an unstandardized filtering layer and many more quirks. Yet billions of emails arrive correctly every single day. Email is not elegant but nonetheless it is Lindy. In the new age of agentic AI, we can only expect it to metamorphose into another dimension. ↫ Saurabh "Sam" Khawase The fact that email is as complicated as it is bad enough, but having it be so dominantly controlled by only a few large gatekeepers like Google and Microsoft surely isn't helping either. I feel like email is no longer really a technology individuals can actively partake in at every level; it feels much more like WhatsApp or iMessage or whatever in that we just get to send messages, and that's it. Running your own mail sever isn't only a complex endeavour, it's also a continuous cat-and-mouse game with companies like Google and Microsoft to ensure you don't end up on some shitlist and your emails stop arriving. I settled on Fastmail as my email service, and it works quite well. Still, I would love to be able to just run my own email server, or have some of my far more capable friends run one for a small group of us, but it's such a daunting and unpleasant effort few people seem to have the stomach and perseverance for it.

30 Apr 2026 7:30pm GMT

The day I logged 1 in every 2000 public IPv4: visualizing the AI scraper DDoS

What if you run a few online services for you and your friends, like a small git instance and a grocery list service, but you get absolutely hammered by "AI" scrapers? I cannot impress upon you, reader, that this is not only an attack that is coordinated, it is an attack that is distributed. I run a small set of services, basically only for me and my friends. I am not a hyperscaler, I am not a tech company, I am not even a small platform. I have a git forge where I put the shit I make, and a couple other services where me and my friends backup our files or write our grocery lists. I am not fucking Meta and I cannot scale the fuck up just because OpenAI or Anthropic or Meta or whoever is training a model that weeks wants to suck all the content out of my VPS ONCE MORE until it's dry. ↫ lux at VulpineCitrus So how much traffic did the author of this piece, lux, get from "AI" scraping bots? Within a time period of 24 hours, they were hammered by 2040670 unique IP addresses, 98% of which were IPv4 addresses, which means that 1 out of every 2000 publicly available IPv4 addresses were involved in the scraping. Together, they performed over 5 million requests. And just to reiterate: they were scraping a few very small, friends-only services run by some random person. This is absolutely insane. If, at this point in time, with everything that we know about just how deeply unethical every single aspect of "AI" is, you're still using and promoting it, what is wrong with you? If you're so addicted to your "AI" girlfriend's unending stream of useless, forgettable sycophantic slop, despite being aware of the damage you're doing to those around you, there's something seriously wrong with you, and you desperately need professional help. You don't need any of this. The world doesn't need any of this. Nobody likes the slop "AI" regurgitates, and nobody likes you for enabling it. Get help.

30 Apr 2026 11:04am GMT

29 Apr 2026

OSnews

Earliest 86-DOS and PC-DOS code released as open source

Microsoft is continuing its efforts to release early versions of DOS as open source, and today we've got a special one. We're stoked today to showcase some newly available source code materials that provide an even earlier look into the development of PC-DOS 1.00, the first release of DOS for the IBM PC. A dedicated team of historians and preservationists led by Yufeng Gao and Rich Cini has worked to locate, scan, and transcribe the stack of DOS-era source listings from Tim Paterson, the author of DOS. The listings include sources to the 86-DOS 1.00 kernel, several development snapshots of the PC-DOS 1.00 kernel, and some well-known utilities such as CHKDSK. Not only were these assembler listings, but there were also listings of the assembler itself! This work offers rare insight into how MS-DOS/PC-DOS came to be, and how operating system development was done at the time, not as it was later reconstructed. ↫ Stacey Haffner and Scott Hanselman It's wild that the source code had to be transcribed from paper, including notes and changes. You can find more information about the process on Gao's website and Cini's website.

29 Apr 2026 8:55pm GMT