"Planetary scientists want to search for biosignatures in what they believe was once a Martian mud lake," reports Space.com: After scientists carefully studied what they believe are desiccated remnants of an equatorial mud lake on Mars, their study of Hydraotes Chaos suggests a buried trove of water surged onto the surface. If researchers are right, then this flat could become prime ground for future missions seeking traces of life on Mars... More generally, scientists suggest surface water on Mars froze over about 3.7 billion years ago as the atmosphere thinned and the surface cooled. But underground, groundwater might still have remained liquid in vast chambers. Moreover, life forms might have abided in those catacombs — leaving behind traces of their existence. Only around 3.4 billion years ago did that system of aquifers break down in Hydraotes Chaos, triggering floods of epic proportions that dumped mountains' worth of sediment onto the surface, the study suggests. Future close-up missions could someday examine that sediment for biosignatures...

Alexis Rodriguez, a senior scientist at the Planetary Science Institute in Arizona, and his colleagues pored over images of Hydraotes Chaos taken by NASA's Mars Reconnaissance Orbiter in search of more clues. In the midst of the chaos terrain's maelstrom lies a calm circle of relatively flat ground. This plain is pockmarked with cones and domes, with hints of mud bubbling from below — suggesting that sediment did not arrive via a rushing flash flood, but instead rose from underneath. Based on simulations, the authors suggest Hydraotes Chaos overlaid a reservoir of buried biosignature-rich water — potentially in the form of thick ice sheets.

Ultimately — potentially from the Red Planet's internal heat melting the ice — that water bubbled up to the surface and created a muddy lake. As the water dissipated, it would have left behind all those tantalizing biosignatures. Curiously, that water might have remained underground even after those megafloods. In fact, the authors' results suggest the sediment on the surface of this mud lake dates from only around 1.1 billion years ago: long after most of Mars's groundwater ought to have flooded out, and certainly long after Mars was habitable. With that timeline in mind, Rodriguez and colleagues plan to analyze what lies under the surface of the lake. That, Rodriguez tells Space.com, would allow scientists to establish when in Martian history the planet might have hosted life.
Rodriguez tells Space.com that this region is now "under consideration" for testing with an under-development NASA instrument called Extractor for Chemical Analysis of Lipid Biomarkers in Regolith (EXCALIBR) — that could test extraterrestrial rocks for biomarkers like lipids.

"Dropbox said Friday that it's agreed to return over one quarter of its San Francisco headquarters to the landlord," reports CNBC, "as the commercial real estate market continues to soften following the Covid pandemic."

The article notes that last year Dropbox's accountants declared a $175.2 million "impairment" on the office — a permanent reduction in its value — calling it "a result of adverse changes" in the market. And the year before they announced another $400 million charge "related to real estate assets."

Friday CNBC reported: In a filing, Dropbox said it agreed to surrender to its landlord 165,244 square feet of space and pay $79 million in termination fees. Under the amendment to its lease agreement, Dropbox will offload the space over time through the first quarter of 2025. Since going remote during the pandemic three years ago, Dropbox has been trying to figure out what to do with much of the 736,000 square feet of space in Mission Bay it leased in 2017, in what was the largest office lease in the city's history. The company subleased closed to 134,000 square feet of space last year to Vir Biotechnology, leaving it with just over 604,000 square feet...

"As we've noted in the past, we've taken steps to de-cost our real estate portfolio as a result of our transition to Virtual First, our operating model in which remote work is the primary experience for our employees, but where we still come together for planned in-person gatherings," a company spokesperson told CNBC in an emailed statement... Dropbox's 2017 lease for the brand new headquarters was for 15 years... "As a result of the amendment the company will avoid future cash payments related to rent and common area maintenance fees of $137 million and approximately $90 million, respectively, over the remaining 10 year lease term," Dropbox said in Friday's filing.

A short walk away from Dropbox, Uber has been trying to sublease part of its headquarters.
The article also notes that San Francisco's office vacancy rate "stood at 30% in the third quarter, the highest level since at least 2007, according to city data."

Images from the James Webb Space Telescope "don't match scientists' models of how the universe formed," reports the Washington Post.

"But it might not be time to dump the standard model of cosmology yet. " A recent analysis in the Astrophysical Journal Letters suggests an explanation for the surprisingly massive-seeming galaxies: brilliant, extremely bright bursts of newborn stars.

The galaxies photographed by the telescope looked far too mature and large to have formed so fully so soon after the universe began, raising questions about scientists' assumptions of galaxy formation. But when researchers ran a variety of computer simulations of the universe's earliest days, they discovered that the galaxies probably are not as large as they seem. Instead, they attribute their brightness to a phenomenon called "bursty star formation." As clouds of dust and debris collapse, they form dense, high-temperature cores and become stars. Bursty galaxies spit out new stars in intermittent, bright bursts instead of creating stars more consistently. Usually, these galaxies are low in mass and take long breaks between starbursts.

Because the galaxies in question look so bright in photos produced by the Webb telescope, scientists at first thought they were older and more massive. But bursty systems with the ability to produce extremely bright, abundant light may appear more massive than they really are.
"Not only does this finding explain why young galaxies appear deceptively massive, it also fits within the standard model of cosmology," explains the announcement: In the new study, Guochao Sun, who led the study, Northwestern's, Claude-André Faucher-Giguère, the study's senior author, and their team used advanced computer simulations to model how galaxies formed right after the Big Bang. The simulations produced cosmic dawn galaxies that were just as bright as those observed by the JWST...

Although other astrophysicists have hypothesized that bursty star formation could be responsible for the unusual brightness of galaxies at cosmic dawn, the Northwestern researchers are the first to use detailed computer simulations to prove it is possible. And they were able to do so without adding new factors that are unaligned with our standard model of the universe.

Stephen Clark reports via Ars Technica: Earlier this week, SpaceX launched for the 75th time this year, continuing a flight cadence that should see the company come close to 100 missions by the end of December. SpaceX plans to kick its launch rate into a higher gear in 2024. This will be largely driven by launches of upgraded Starlink satellites with the ability to connect directly with consumer cell phones, a service SpaceX calls "Starlink Direct to Cell," a company official told Ars this week. The goal next year is 12 launches per month, for a total of 144 Falcon rocket flights. Like this year, most of those missions will be primarily devoted to launching Starlink broadband satellites. So far in 2023, more than 60 percent of SpaceX's launches have delivered the company's own Starlink satellites into orbit.

Here are some numbers. Last year, SpaceX launched 61 missions. In 2021, the number was 31. In the last 12 months, SpaceX has launched 88 Falcon rockets, plus one test flight of the company's much larger Starship rocket. SpaceX's success in recovering and reusing Falcon 9 boosters and payload fairings has been vital to making this possible. SpaceX has gone past the original goal of launching each Falcon 9 booster 10 times before a major overhaul, first to 15 flights, and then recently certifying boosters for up to 20 missions. Technicians can swap out parts like engines, fins, landing legs, and valves that malfunction in flight or show signs of wear. With so many launches planned next year, 20 flights is probably not a stopping point. "We might go a little higher," the SpaceX official said. SpaceX may also see an uptick in missions for external customers, like NASA, the U.S. Space Force, and commercial companies. "External demand for Falcon 9 and Falcon Heavy launches is 'steady,' the official said, but some customers that had launches scheduled for this year encountered delays with their satellites, moving them into 2024."

Tereza Pultarova reports via Space.com: Light pollution is a growing threat to astronomy, but a new streetlamp technology could restore clear views of the night sky. [...] A study published earlier this year found that stars are disappearing from the sky at an average rate of 10% per year. This trend affects even the world's most remote observatories. Germany-based startup StealthTransit recently tested a solution to this growing issue. "Unfortunately, this problem haunts almost all observatories today," Vlad Pashkovsky, StealthTransit's founder and CEO, told Space.com in an email. "Modern telescopes are highly sensitive and feel the impact of outdoor lighting of cities located at the distance of 50 or even 200 kilometers [30 to 120 miles]. This means that virtually every observatory on Earth either already needs, or will need in the future 10 years, protection from the light of large cities."

StealthTransit's solution relies on three components: A simple device that makes LED lights flicker at a very high frequency that is imperceptible to the human eye, a GPS receiver, and a specially designed shutter on the telescope's camera that can blink in sync with the LED lights. The GPS technology guides the telescope's shutter to open only during the fleeting moments when the LED lights are switched off. The experiments, conducted at an observatory in the Caucasus Mountains in Russia, showed that the technology, dubbed the DarkSkyProtector, could reduce unwanted sky glow in astronomical images by 94%. "We can say that the telescope was seeing almost a dark sky at this time," Pashkovsky said. "The important thing about our technology is that it makes all kinds of lights astronomy-friendly, including outdoor advertising and indoor lighting in apartments, offices and stores."

The technology could filter out lights from nearby towns and villages as well as those surrounding the observatory itself. It might sound impractical to refit an entire town with devices that allow lamps to blink, but Pashkovsky said that most existing LED lights can operate in the blinking mode and that new lamps designed specifically with sky protection in mind would be no costlier than existing LED technology. The most expensive element of the DarkSkyProtector system is the telescope shutter, which needs to be lightweight and agile enough to blink about 150 times per second. StealthTransit tested the prototype shutter on a 24-inch-wide (60 centimeters) telescope and hopes to make the technology available for larger telescopes. Although StealthTransit's technology is not yet ready for commercial use, Pashkovsky said, the firm hopes to have a product fit for the world's best telescopes in five to seven years.

The government of India said on Tuesday that it plans to put an astronaut on the moon by 2040 and build an Earth-orbiting space station by 2035. Space.com reports: On Aug. 23, India became just the fourth nation ever to soft-land a spacecraft -- its Chandrayaan-3 lander-rover duo -- on the surface of the moon. In a recent meeting with the Indian government department that manages the country's space program, Prime Minister Narendra Modi "directed that India should now aim for new and ambitious goals," according to an official statement. India's future moon exploration efforts will include a series of additional robotic Chandrayaan missions, a new launch pad and a heavy-lift launch vehicle, the statement added.

India's delayed Gaganyaan human spaceflight program, now aiming to fly three astronauts to low Earth orbit in 2025, will feature 20 major tests, including three uncrewed missions to test the launch vehicle over the course of the remainder of this year and all of next. [...] By the middle of the 2030s, India hopes to have a 20-ton space station in a fixed orbit 248 miles (400 kilometers) above Earth, with capabilities to host astronauts for 15 to 20 days at a time, K. Sivan, former chairman of the Indian Space Research Organization (ISRO), has previously said.

Further down the pipeline of missions, ISRO is planning a Venus orbiter called Shukrayaan-1 to study the surface of that hellishly hot planet. The payloads for that mission are currently being developed, current ISRO chairman S. Somanath had said last month. A second orbiter mission to Mars is also on the books, according to the latest statement. The nation's first, the Mars Orbiter Mission (MOM), was launched in 2013 and studied the Red Planet's atmosphere for eight years before it lost contact with Earth in April 2022. The follow-up mission, Mars Orbiter Mission 2 or MOM 2, will likely include cameras to study the planet's crust and may also include a lander, although many of the mission plans are yet to be finalized.

Apple is taking a different approach to social with its Vision Pro headset: making apps social right out of the box. This, according to Road to VR's Ben Lang, is what Meta should have done all along. Instead, it's pioneered a social experience on the Quest platform that involves "jumping through a fragmented landscape of different apps and different ways to actually get into the same space with your friends." From the report: Apple is taking a fundamentally different approach with Vision Pro by making social the expectation rather than the rule, and providing a common set of tools and guidelines for developers to build from in order to make social feel cohesive across the platform. Apple's vision isn't about creating a server full of a virtual strangers and user-generated experiences, but to make it easy to share the stuff you already like to do with the people you already know. This obviously leans into the company's rich ecosystem of existing apps -- and the social technologies the company has already battle-tested on its platforms.

SharePlay is the feature that's already present on iOS and MacOS devices that lets people watch, listen, and experience apps together through FaceTime. And on Vision Pro, Apple intends to use its SharePlay tech to make many of its own first-party apps -- like Apple TV, Apple Music, and Photos -- social right out of the box, and it expects developers to do so too. In the company's developer documentation, the company says it expects "most visionOS apps to support SharePlay." [...]

Perhaps most importantly, Apple is leaning on every user's existing personal friend graph (ie: the people you already text, call, or email), rather than trying to create a bespoke friends list that lives only inside Vision Pro. Rather than launching an app and then figuring out how to get your friends into it, with SharePlay Apple is focused on getting together with your friends first, then letting the group seamlessly move from one app to the next as you decide what you want to do.

Even apps that don't explicitly have multi-user experience built-in can be 'social' by default, by allowing one user to screen-share the app with others. Only the host will be able to interact with the content, but everyone else will be able to see and talk about it in real-time. It's the emphasis on 'social by default', 'things you already do', and 'people you already know' that will make social on Vision Pro feel completely different than what Meta is building on Quest with Horizon Worlds and its ecosystem of fragmented social apps.

An anonymous reader shares a report: On May 4, 2022, NASA's InSight lander detected the largest quake yet recorded on Mars, one with a 4.7 magnitude -- fairly modest by Earth standards but strong for our planetary neighbor. Given Mars lacks the geological process called plate tectonics that generates earthquakes on our planet, scientists suspected a meteorite impact had caused this marsquake. But a search for an impact crater came up empty, leading scientists to conclude that this quake was caused by tectonic activity -- rumbling in the planet's interior -- and giving them a deeper understanding about what makes Mars shake, rattle and roll.

"We concluded that the largest marsquake seen by InSight was tectonic, not an impact. This is important as it shows the faults on Mars can host hefty marsquakes," said planetary scientist Ben Fernando of the University of Oxford in England, lead author of the research published this week in the journal Geophysical Research Letters. "We really thought that this event might be an impact." "This represents a significant step forward in our understanding of Martian seismic activity and takes us one step closer to better unraveling the planet's tectonic processes," added Imperial College London planetary scientist and study co-author Constantinos Charalambous, co-chair of InSight's Geology Working Group.

NASA retired InSight in 2022 after four years of operations. In all, InSight's seismometer instrument detected 1,319 marsquakes. Earth's crust - its outermost layer - is divided into immense plates that continually shift, triggering quakes. The Martian crust is a single solid plate. But that does not mean all is quiet on the Martian front. "There are still faults that are active on Mars. The planet is still slowly shrinking and cooling, and there is still motion within the crust even though there are no active plate tectonic processes going on anymore. These faults can trigger quakes," Fernando said.

Michael Kan reports via PCMag: Jeff Bezos' Blue Origin has announced a new spacecraft that promises to help humanity build and maintain projects in outer space. The company today debuted Blue Ring, a so-called "space platform" that can orbit Earth, but also travel around the Moon, with the goal of providing delivery and logistics support to other space projects. To do so, Blue Ring functions as a maneuverable platform that can host, transport, and refuel other spacecraft. In addition, it can relay data while also offering an "in-space" cloud computing capability, according to Blue Origin's announcement.

Other rockets, particularly those from rival SpaceX, can already send satellites up into predictable orbits around Earth. In contrast, Blue Ring is designed to serve customers for more "dynamic" space projects at varying orbits, Blue Origin Lars Hoffman VP tells Aviation Week. "It has a lot of capability and a lot of energy. It is a platform that has versatility across multiple missions and multiple customers on any given launch," Hoffman says.

The company adds that Blue Ring can travel with payloads of over 6,600 pounds. According to Aviation Week, Blue Origin is eyeing 2025 as a realistic launch date for the spacecraft, which has already received some interest from customers. Hoffman also says Blue Ring will be "launch-vehicle agnostic," allowing it to fly on a SpaceX Falcon 9 rocket or Blue Origin's own New Glenn, which is aiming to be used in its first mission next year.

While the tech in virtual reality headsets has "undoubtedly gotten better," iFixit says "repair is getting left off of designers' priority lists." In a recent teardown video, the DIY repair site disassembled Meta's Quest 3 headset to find that it's not super repairable," giving it a repairability score of 4 out of 10 due the absence of manuals, OEM spare parts, and "any sign of repairability considerations whatsoever." The Register reports: As the iFixit team tore into the headset, the first major failure from a repairability perspective was the "extremely complicated procedure of replacing the lithium polymer battery pack." "Replacing the battery in the Quest 3 is as difficult as it was in the Quest 2, and far more difficult than the Quest Pro." That said, the batteries in the controllers are AAs rather than the lithium-ion cells of the Quest Pro, so it's a win there.

Faced with a multitude of screws and the lack of a service manual, iFixit stripped the headset back to its bare components, revealing the new time of flight sensor -- essential for hand and controller tracking as well as mapping out the space around the user -- and, beyond the fan, the mainboard. The Quest 3 is powered by a Snapdragon 8, the XR2 Gen2. According to iFixit: "Leaked benchmarks suggest that this newer SoC improves on the XR2+ found in the Quest Pro both in terms of performance and power efficiency."

However, it is the battery that disappoints. Although it is a standard unit so theoretically replaceable, iFixit noted: "It's taken me three Fixmats, a single tray of plastic, and very careful organizing of about 50 screws to get this far." Yikes. Not really a user-serviceable part at all. [...] Overall, the team gave the device a provisional 4 out of 10 in its teardown, principally due to the absence of manuals, OEM spare parts, and "any sign of repairability considerations whatsoever." But hey, at least you can swap out the AAs in the controllers when they die.

"If we carry on the way we're going, we're going to have to concrete the whole planet just to store the data that we're generating," explains a deputy lab director at Microsoft Research Cambridge in a new video.

Fortunately, "A small sheet of glass can now hold several terabytes of data, enough to store approximately 1.75 million songs or 13 years' worth of music," explains a Microsoft Research web page about "Project Silica". (Data is retrieved by a high-speed, computer-controlled microscope from a library of glass disks storing data in three-dimensional pixels called voxels): Magnetic storage, although prevalent, is problematic. Its limited lifespan necessitates frequent re-copying, increasing energy consumption and operational costs over time. "Magnetic technology has a finite lifetime," says Ant Rowstron, Distinguished Engineer, Project Silica. "You must keep copying it over to new generations of media. A hard disk drive might last five years. A tape, well, if you're brave, it might last ten years. But once that lifetime is up, you've got to copy it over. And that, frankly, is both difficult and tremendously unsustainable if you think of all that energy and resource we're using."

Project Silica aims to break this cycle. Developed under the aegis of Microsoft Research, it can store massive amounts of data in glass plates roughly the size of a drink coaster and preserve the data for thousands of years. Richard Black, Research Director, Project Silica, adds, "This technology allows us to write data knowing it will remain unchanged and secure, which is a significant step forward in sustainable data storage." Project Silica's goal is to write data in a piece of glass and store it on a shelf until it is needed. Once written, the data inside the glass is impossible to change.

Project Silica is focused on pioneering data storage in quartz glass in partnership with the Microsoft Azure team, seeking more sustainable ways to archive data. This relationship is symbiotic, as Project Silica uses Azure AI to decode data stored in glass, making reading and writing faster and allowing more data storage... The library is passive, with no electricity in any of the storage units. The complexity is within the robots that charge as they idle inside the lab, awakening when data is needed... Initially, the laser writing process was inefficient, but after years of refinement, the team can now store several TB in a single glass plate that could last 10,000 years. For a sense of scale, each plate could store around 3,500 movies. Or enough non-stop movies to play for over half a year without repeating. A glass plate could hold the entire text of War and Peace — one of the longest novels ever written — about 875,000 times.
And most importantly, it can store data in a fraction of the space of a datacenter...

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

The BBC reports: Doctor Who's first writer could finally be recognised 60 years after he helped launch the hugely-popular series. Anthony Coburn penned the first four episodes of the sci-fi drama in 1963 — a story called An Unearthly Child. But after his second story did not air, the writer has been seen as a minor figure among some Doctor Who fans.

However, a campaign to erect a memorial to Coburn in his home town of Herne Bay, Kent, is gathering pace a month ahead of the show's 60th anniversary.
A local elected councillor told the BBC they're working to find a location for the memorial.

The BBC writes that Coburn's episode — broadcast November 23, 1963 — "introduced the character of The Doctor, his three travelling companions, and his time and space machine, the TARDIS, stuck in the form of a British police box." Richard Bignell, a Doctor Who historian, believes Coburn played a significant role in sowing the seeds of the programme's success. He said: "Although the major elements that would go on to form the core of the series were devised within the BBC, as the scriptwriter for the first story, Coburn was the one who really put the flesh on the bones of the idea and how it would work dramatically. "Many opening episodes of a new television series can be very clunky as they attempt to land their audience with too much information about the characters, the setting and what's going to happen, but Coburn was very reserved in how much he revealed, preserving all the wonder and mystery."
In 2013, the Independent reported: Mr Coburn's son claims that the BBC has been in breach of copyright since his father's death in 1977. He has demanded that the corporation either stop using the Tardis in the show or pay his family for its every use since then. Stef Coburn claims that upon his father's death, any informal permission his father gave the BBC to use his work expired and the copyright of all of his ideas passed to his widow, Joan. Earlier this year she passed it on to him.

He said: "It is by no means my wish to deprive legions of Doctor Who fans (of whom I was never one) of any aspect of their favourite children's programme. The only ends I wish to accomplish, by whatever lawful means present themselves, involve bringing about the public recognition that should by rights always have been his due, of my father James Anthony Coburn's seminal contribution to Doctor Who, and proper lawful recompense to his surviving estate."
Today jd (Slashdot reader #1,658) notes that Stef Coburn apparently has a Twitter feed, where this week Stef claimed he'd cancelled the BBC's license to distribute his father's episodes after being offered what he complained was "a pittance" to relicense them.

In response to someone who asked "What do you actually gain from doing this though?" Stef Coburn replied: "Vengeance." But elsewhere Stef Coburn writes "There are OTHER as yet unfulfilled projects & aspirations of Tony's (of one of which, I was a significant part, in his final year), which I would like to see brought to fruition. If Doctor Who is my ONLY available leverage. So be it!"

Stef Coburn also announced plans to publish his father's "precursor draft-scripts (At least one very different backstory; sans 'Timelords') plus accompanying notes, for the story that became 'The Tribe of Gum'."

Long-time Slashdot reader SonicSpike shared the Washington Post's speculation about the possibility of a gigantic solar storm leaving millions without phone or internet access, and requiring months or years of rebuilding: The odds are low that in any given year a storm big enough to cause effects this widespread will happen. And the severity of those impacts will depend on many factors, including the state of our planet's magnetic field on that day. But it's a near certainty that some form of this catastrophe will happen someday, says Ian Cohen, a chief scientist who studies heliophysics at the Johns Hopkins Applied Physics Laboratory.
Long-time Slashdot reader davidwr remains skeptical. "I've only heard of two major events in the last 1300 years, one estimated to be between A. D. 744 and A. D. 993, and the other being the Carrington Event in 1859.

But efforts are being made to improve our readiness, reports the Washington Post: To get ahead of this threat, a loose federation of U.S. and international government agencies, and hundreds of scientists affiliated with those bodies, have begun working on how to make predictions about what our Sun might do. And a small but growing cadre of scientists argue that artificial intelligence will be an essential component of efforts to give us advance notice of such a storm...

At present, no warning system is capable of giving us more than a few hours' notice of a devastating solar storm. If it's moving fast enough, it could be as little as 15 minutes. The most useful sentinel — a sun-orbiting satellite launched by the U.S. in 2015 — is much closer to Earth than the sun, so that by the time a fast-moving storm crosses its path, an hour or less is all the warning we get. The European Space Agency has proposed a system to help give earlier warning by putting a satellite dubbed Vigil into orbit around the Sun, positioned roughly the same distance from the Earth as the Earth is from the Sun. It could potentially give us up to five hours of warning about an incoming solar storm-enough time to do the main thing that can help preserve electronics: Switch them all off.

But what if there were a way to predict this better, by analyzing the data we've got? That's the idea behind a new, AI-powered model recently unveiled by scientists at the Frontier Development Lab — a public-private partnership that includes NASA, the U.S. Geological Survey, and the U.S. Department of Energy. The model uses deep learning, a type of AI, to examine the flow of the solar wind, the usually calm stream of particles that flow outward from our sun and through the solar system to well beyond the orbit of Pluto. Using observations of that solar wind, the model can predict the "geomagnetic disturbance" an incoming solar storm observed by sun-orbiting satellites would cause at any given point on Earth, the researchers involved say. This model can predict just how big the flux of the Earth's magnetic field will be when the solar storm arrives, and thus how big the induced currents in power lines and undersea internet cables will be...

Already, the first primitive ancestor of future AI-based solar-weather alert systems is live. The DstLive system, which debuted on the web in December 2022, uses machine learning to take data about the state of Earth's magnetic field and the solar wind and translate both into a single measure for the entire planet, known as DST. Think of it as the Richter scale, but for solar storms. This number is intended to give us an idea of how intense a storm's impact will be on earth, an hour to six hours in advance.

Unfortunately, we may not know how useful such systems are until we live through a major solar storm.

Richard Tribou reports via Phys.Org: NASA's goal to reduce the costs of the powerful Space Launch System rocket for its Artemis program by 50% was called "highly unrealistic" and a threat to its deep space exploration plans, according to a report by NASA's Office of the Inspector General released (PDF) on Thursday. The audit says the costs to produce one SLS rocket through its proposed fixed-cost contract will still top $2.5 billion, even though NASA thinks it can shrink that through "workforce reductions, manufacturing and contracting efficiencies, and expanding the SLS's user base."

"Given the enormous costs of the Artemis campaign, failure to achieve substantial savings will significantly hinder the sustainability of NASA's deep space human exploration efforts," the report warns. The audit looked at NASA's plans to shift from its current setup among multiple suppliers for the hardware to a sole-sourced services contract that would include the production, systems integration and launch of at least five SLS flights beginning with Artemis V currently slated for as early as 2029. NASA's claim it could get those costs to $1.25 billion per rocket was taken to task by the audit.

"NASA's aspirational goal to achieve a cost savings of 50% is highly unrealistic. Specifically, our review determined that cost saving initiatives in several SLS production contracts were not significant," the audit reads. It does find that rocket costs could approach $2 billion through the first 10 SLS rockets under the new contract, a reduction of 20%. [...] Through 2025, the audit stated its Artemis missions will have topped $93 billion, which includes billions more than originally announced in 2012 as years of delays and cost increases plagued the leadup to Artemis I. The SLS rocket represents 26% of that cost to the tune of $23.8 billion. The inspector general makes several recommendations to NASA. The most striking of which is that NASA consider using commercial heavy-lift rockets, such as SpaceX's Starship and Super Heavy or Blue Origin's New Glenn, as an alternative to the SLS rocket for future Artemis missions.

"Although the SLS is the only launch vehicle currently available that meets Artemis mission needs, in the next 3 to 5 years other human-rated commercial alternatives that are lighter, cheaper, and reusable may become available," the audit reads. "Therefore, NASA may want to consider whether other commercial options should be a part of its mid- to long-term plans to support its ambitious space exploration goals."

Is the asteroid Psyche really a hunk of mostly metal? Is the object, which is nearly as wide as Massachusetts, the core of a baby planet whose rocky outer layers were knocked off during a cataclysmic collision in the early days of the solar system? Right now, all that astronomers can say is maybe, maybe not. NASA launched a spacecraft on Friday morning, also named Psyche, on a journey to the asteroid belt between Mars and Jupiter to find out. From a report: "We're really going to see a kind of new object, which means that a lot of our ideas are going to be proven wrong," said Lindy Elkins-Tanton, a professor of earth and space exploration at Arizona State University who serves as the mission's principal investigator.

Being proven wrong, she added, "is, I think, the most exciting thing in science." That voyage in search of answers kicked off Friday at 10:19 a.m. Eastern time. Falcon Heavy, the largest of SpaceX's operational rockets, lifted off from Kennedy Space Center in Florida, sending the massive spacecraft on a journey that will last about six years and travel billions of miles. Friday's flight overcame early, unfavorable weather forecasts for a seemingly flawless flight. About eight minutes into the flight, the rocket's upper stage entered a 45-minute coasting period during which it will prepare to deploy the spacecraft on its flight away from Earth. The asteroid named Psyche has long been a curious enigma. Spotted in 1852 by Annibale de Gasparis, an Italian astronomer, it is named for the Greek goddess of the soul, and it was just the 16th asteroid to be discovered. In the early observations, it was, like the other asteroids, a starlike point of light that moved in an orbit around the sun, and not much more.

SpzToid writes: Ubuntu 23.10, codenamed Mantic Minotaur, is the 39th Ubuntu release, and it's one of the three smaller interim releases Canonical puts out between long-term support (LTS) versions. This last interim before the next LTS doesn't stand out with bold features you can identify at a glance. But it does set up some useful options and upgrades that should persist in Ubuntu for some time.

Two of the biggest changes in Ubuntu 23.10 are in the installer. Ubuntu now defaults to a "Default installation," which is quite different from what the "default" was even just one release prior. "Default" is described as "Just the essentials, web browser, and basic utilities," while "Full" is "An offline-friendly selection of office tools, utilities, web browser, and games." "Default" is somewhat similar to what "Minimal" used to be in prior versions, while "Full" is intended for those who are offline or have slow connections or just want as many options as possible right away.

Elsewhere in the installer, you can now choose ZFS as your primary file system. There's also an experimental option to set up Trusted Platform Module (TPM) full-disk encryption rather than rely entirely on passphrases to encrypt your disk. This brings Ubuntu up to speed with Windows in offering a way to both secure your system and find out the hard way that you lack a backup key to get in after messing with your boot options. (Kidding! Somewhat.)

SpaceX quietly published a new "Starlink Direct to Cell" webpage highlighting the company's forthcoming cell service for mobile phones. MobileSyrup reports: The new 'Starlink Direct to Cell' page boasts "seamless access to text, voice, and data for LTE phones across the globe" and notes that the company is targeting text capabilities in 2024, followed by voice and data capabilities in 2025. Internet of Things (IoT) support may also arrive in 2025. Starlink also advertises that the direct-to-cell system would work with "existing LTE phones wherever you can see the sky" and wouldn't require any changes to hardware, firmware, or special apps. The page also explains that Starlink Direct to Cell would use "an advanced eNodeB modem" that "acts like a cellphone tower in space." The system would allow network integration "similar to a standard roaming partner." Last year, SpaceX announced a partnership with T-Mobile, allowing users' mobile phones to connect directly with Starlink satellites in orbit. SpaceX said it was hoping to launch the service later this year but the company has been mum on the progress.

The jackpot from a seven-year mission to bring back bits of an asteroid was unveiled on Wednesday. From a report: NASA officials in Houston displayed images of salt-and-pepper chunks of rock and particles of dark space dust that were brought back to Earth from the asteroid, Bennu, and described initial scientific observations about the material. The mission, Osiris-Rex, concluded in September when a capsule full of asteroid was jettisoned through Earth's atmosphere and recovered in the Utah desert. The first pieces of materials that leaked outside the container were analyzed using a variety of laboratory techniques, revealing just the earliest findings.

Scientists found water molecules trapped in clay minerals -- water from asteroids similar to Bennu could have filled Earth's oceans. "The reason that Earth is a habitable world, that we have oceans and lakes and rivers and rain, is because these clay minerals, like minerals, like the ones we're seeing from Bennu, landed on Earth four billion years ago," Dante Lauretta, the mission's principal investigator, said during a NASA event on Wednesday. The materials also contained sulfur, key for many geological transformations in rocks.

"It determines how quickly things melt and it is also critical for biology," said Dr. Lauretta, who displayed microscopic images and 3-D visualizations of the material. The scientists also found magnetite, an iron oxide mineral that can play an important role as a catalyst in organic chemical reactions. "We're looking at the kinds of minerals that may have played a central role in the origin of life on Earth," Dr. Lauretta said. The samples are also chock-full of carbon, the element that is the building block for life.

US Space Force has temporarily banned the use of web-based generative AI tools and so-called large language models that power them, citing data security and other concerns, Bloomberg News reported Wednesday, citing a memo. From the report: The Sept. 29 memorandum, addressed to the Guardian Workforce, the term for Space Force members, pauses the use of any government data on web-based generative AI tools, which can create text, images or other media from simple prompts. The memo says they "are not authorized" for use on government systems unless specifically approved.

Chatbots and tools like OpenAI's ChatGPT have exploded in popularity. They make use of language models that are trained on vast amounts of data to predict and generate new text. Such LLMs have given birth to an entire generation of AI tools that can, for example, search through troves of documents, pull out key details and present them as coherent reports in a variety of linguistic styles. Generative AI "will undoubtedly revolutionize our workforce and enhance Guardian's ability to operate at speed," Lisa Costa, Space Force's chief technology and innovation officer, said in the memo. But Costa also cited concerns over cybersecurity, data handling and procurement requirements, saying that the adoption of AI and LLMs needs to be "responsible."

An anonymous reader quotes a report from The Verge: Here's how your computer should work, according to Mustafa Abdelhai, the co-founder and CEO of a startup called Deta. Instead of a big empty screen full of icons, your desktop should be an infinite canvas on which you can take notes or watch movies or run full apps just by drawing a rectangle on the screen. Instead of logging in to a bunch of cloud services over which you ultimately have no control, you should be able to download software like PC users did 20 years ago, and the stuff you download should be completely yours. All your apps should talk to each other, so you can move data between them or even use multiple apps' features simultaneously. You should be able to use AI to accomplish almost anything. And it should all happen in a browser tab.

For the last couple of years, the Berlin-based Deta has been building what it calls "the personal cloud computer." The product Deta is launching today is called Space OS, and the way Abdelhai explains it, it's the first step in putting the personal back in the personal computer. "Personal computing took a dive at the turn of the century," he says, "when cloud computing became the big thing. We all moved to the cloud, moved our data, and we don't own it anymore. It's just somebody else's computer." Deta wants to give it back. [...]

Deta's idea is both a very new one and a very old one. It harkens back to the early days of computers when you bought software in a box at a store and installed it on your computer. The cloud era, of course, made computing vastly easier and more powerful but also systematically ate away at the idea that you could control anything on your devices. It's an interesting thought experiment, actually: if every cloud service shut down tomorrow, what would be left on your phone or your laptop? Odds are, not much. Deta's trying to undo that a bit, to embrace the cloud and the expansive universe of apps while giving you back the feeling that your computer -- and everything on it -- is yours and no one else's. Because your computer should be yours -- even if it's on somebody's server.