An anonymous reader quotes a report from CBC.ca: A company largely owned by the French and U.K. governments is pitching Canada on a roughly $250-million plan to provide the military with secure satellite broadband coverage in the Arctic, CBC News has learned. Eutelsat, a rival to tech billionaire Elon Musk's Starlink, already provides some services to the Canadian military, but wants to deepen the partnership as Canada looks to diversify defence contracts away from suppliers in the United States.

A proposal for Canada's Department of National Defence to join a French Ministry of Defence initiative involving Eutelsat was apparently raised by French President Emmanuel Macron with Prime Minister Mark Carney on the sidelines of last year's G7 summit in Alberta. The prime minister's first question, according to Eutelsat and French defence officials, was how the proposal would affect the Telesat Corporation, a former Canadian Crown corporation that was privatized in the 1990s.

Telesat is in the process of developing its Lightspeed system, a Low Earth Orbit (LEO) constellation of satellites for high-speed broadband. And in mid-December, the Liberal government announced it had established a strategic partnership with Telesat and MDA Space to develop the Canadian Armed Forces' military satellite communications (MILSATCOM) capabilities. A Eutelsat official said the company already has its own satellite network in place and running, along with Canadian partners, and has been providing support to the Canadian military deployed in Latvia. "What we can provide for Canada is what we call a sovereign capacity capability where Canada would actually own all of our capacity in the Far North or wherever they require it," said David van Dyke, the general manager for Canada at Eutelsat.

"We also give them the ability to not be under the control of a singular individual who could decide to disconnect the service for political or other reasons."

An anonymous reader shares a report: Internet access available through mobile devices in Iran appears to be limited, according to several social media accounts that routinely track such developments. Cloudflare Radar, which monitors internet traffic on behalf of the internet infrastructure firm Cloudflare, said on Thursday that IPv6 (Internet Protocol version 6), a standard widely used for mobile infrastructure, was affected.

"IPv6 address space in Iran dropped by 98.5 per cent, concurrent with IPv6 traffic share dropping from 12 per cent to 1.8 per cent, as the government selectively blocks internet access amid protests," read Cloudflare Radar's social post. NetBlocks, which tracks internet access and digital rights around the world, also confirmed it was seeing problems with connectivity through various internet providers in Iran. "Live network data show Tehran and other parts of Iran are now entering a digital blackout," NetBlocks posted on X.

TV manufacturers at CES 2026 in Las Vegas this week unveiled a wave of AI features that frequently consume significant screen space and take considerable time to deliver results -- all while global TV shipments declined 0.6% year over year in Q3, according to Omdia. Google demonstrated Veo generating video from a photo on a television, a process that took about two minutes to produce eight seconds of footage, The Verge writes in a column. Samsung presented a future where viewers ask their sets for sports predictions and recipes to share with kitchen displays. Hisense showed an AI agent that displays real-time stats for every soccer player on screen, a feature requiring so much space the company built a prototype 21:9 aspect ratio display to accommodate it.

Demos repeatedly showed video shrinking to make room for sports scores and information when viewers asked questions -- noticeable on 70-inch displays and likely worse on anything 50 inches or smaller. Amazon's Alexa Plus can jump to Prime Video scenes based on verbal descriptions. LG's sets switch homescreen recommendations based on voice recognition of individual family members.

An anonymous reader shares a report: Prior to World War II the vast majority of telescopes built around the world were funded by wealthy people with an interest in the heavens above.

However, after the war, two significant developments in the mid-20th century caused the burden of funding large astronomical instruments to largely shift to the government and academic institutions. First, as mirrors became larger and larger to see deeper into the universe, their costs grew exponentially. And then, with the advent of spaceflight, the expense of space-based telescopes expanded even further.

But now the tide may be turning again.

On Wednesday evening, former Google CEO Eric Schmidt and his wife, Wendy, announced a major investment in not just one telescope project, but four. Each of these new telescopes brings a novel capability online; however, the most intriguing new instrument is a space-based telescope named Lazuli. This spacecraft, if successfully launched and deployed, would offer astronomers a more capable and modern version of the Hubble Space Telescope, which is now three decades old.

A billionaire with a keen interest in science and technology, Schmidt and his wife did not disclose the size of his investment in the four telescopes, which collectively will be known as the Schmidt Observatory System. However, it likely is worth half a billion dollars, at a minimum.

Astronomers using the Vera C. Rubin Observatory have discovered a record-setting asteroid, known as 2025 MN45, nearly half a mile wide and spinning once every 1.88 minutes -- the fastest known rotation for an object of its size. "This is now the fastest-spinning asteroid that we know of, larger than 500 meters," said Sarah Greenstreet, University of Washington astronomer and lead author of the study. The findings have been published in the The Astrophysical Journal Letters. GeekWire reports: 2025 MN45 is one of more than 2,100 solar system objects that were detected during the observatory's commissioning phase. Over time, the LSST Camera tracked variations in the light reflected by those objects. Greenstreet and her colleagues analyzed those variations to determine the size, distance, composition and rate of rotation for 76 asteroids, all but one of which are in the main asteroid belt between the orbits of Mars and Jupiter. (The other asteroid is a near-Earth object.)

The team found 16 "super-fast rotators" spinning at rates ranging between 13 minutes and 2.2 hours per revolution -- plus three "ultra-fast rotators," including 2025 MN45, that make a full revolution in less than five minutes. Greenstreet said 2025 MN45 appears to consist of solid rock, as opposed to the "rubble pile" material that most asteroids are thought to be made of. "We also believe that it's likely a collisionary fragment of a much larger parent body that, early in the solar system's history, was heated enough that the material internal to it melted and differentiated," Greenstreet said. She and her colleagues suggest that the primordial collision blasted 2025 MN45 from the dense core of the parent body and sent it whirling into space.

Dell has reversed course and resurrected the XPS brand as its "premium consumer" brand of laptops, admitting it was a mistake to kill it in the first place. Slashdot reader joshuark shares a report from Gizmodo: At last year's CES, Dell made the eyebrow-raising decision to ax all its legacy laptop brand names and instead opt for Apple-like conventions. Instead of XPS, we were forced to comprehend the differences between a "Dell," a "Dell Pro," a "Dell Premium," and a "Dell Pro Max." "This complicated brand we called Dell last year was trying to cover this very large consumer space with lots of similar products," Jeff Clarke, Dell's chief operating officer said. Now those non-XPS products are mostly dedicated to the base consumer and entry-level laptops, "no pluses, minuses, squares, or whatever the hell else we called them."

"We won't chase every competitor down every rabbit hole," he added. What that means is we probably won't see any kind of handheld PC from Alienware, like that age-old UFO design showed off back in 2020. Just as well, Dell isn't remodeling its entire laptop lineup for a second time in two years. The company isn't bringing back brand names like Inspiron (which became mere "Dells) or Latitude (which transformed into "Dell Pro). According to Clarke, Dell Pro "still tests well."

America's tech companies and data center developers "are increasingly losing fights in communities where people don't want to live next to them, or even near them," reports the Associated Press: Communities across the United States are reading about — and learning from — each other's battles against data center proposals that are fast multiplying in number and size to meet steep demand as developers branch out in search of faster connections to power sources... [A]s more people hear about a data center coming to their community, once-sleepy municipal board meetings in farming towns and growing suburbs now feature crowded rooms of angry residents pressuring local officials to reject the requests...

A growing number of proposals are going down in defeat, sounding alarms across the data center constellation of Big Tech firms, real estate developers, electric utilities, labor unions and more. Andy Cvengros, who helps lead the data center practice at commercial real estate giant JLL, counted seven or eight deals he'd worked on in recent months that saw opponents going door-to-door, handing out shirts or putting signs in people's yards. "It's becoming a huge problem," Cvengros said. Data Center Watch, a project of 10a Labs, an AI security consultancy, said it is seeing a sharp escalation in community, political and regulatory disruptions to data center development. Between April and June alone, its latest reporting period, it counted 20 proposals valued at $98 billion in 11 states that were blocked or delayed amid local opposition and state-level pushback. That amounts to two-thirds of the projects it was tracking...

For some people angry over steep increases in electric bills, their patience is thin for data centers that could bring still-higher increases. Losing open space, farmland, forest or rural character is a big concern. So is the damage to quality of life, property values or health by on-site diesel generators kicking on or the constant hum of servers. Others worry that wells and aquifers could run dry...

"Starlink is beginning a significant reconfiguration of its satellite constellation focused on increasing space safety," announced Michael Nicolls, Starlink's vice president of engineering: "We are lowering all Starlink satellites orbiting at ~550 km to ~480 km (~4400 satellites) over the course of 2026. The shell lowering is being tightly coordinated with other operators, regulators, and USSPACECOM. Lowering the satellites results in condensing Starlink orbits, and will increase space safety in several ways... Starlink satellites have extremely high reliability, with only 2 dead satellites in its fleet of over 9000 operational satellites. Nevertheless, if a satellite does fail on orbit, we want it to deorbit as quickly as possible. These actions will further improve the safety of the constellation, particularly with difficult to control risks such as uncoordinated maneuvers and launches by other satellite operators.
But orbits are being lowered for another reason (besides quick de-orbiting), notes Space.com. Within the next four years the period of least solar activity is expected, a period which coincides with decreased atmospheric density, Nicolls added, "which means the ballistic decay time at any given altitude increases." [Bringing the satellites lower] will mean a >80% reduction in ballistic decay time in solar minimum, or 4+ years reduced to a few months," Nicolls wrote in his X post. "Correspondingly, the number of debris objects and planned satellite constellations is significantly lower below 500 km, reducing the aggregate likelihood of collision...." The downward migration in 2026 involves roughly half of SpaceX's Starlink megaconstellation, which currently consists of nearly 9,400 operational spacecraft (though that number is always growing).

A small section of the International Space Station that has experienced persistent leaks for years appears to have stopped venting atmosphere into space. ArsTechnica: The leaks were caused by microscopic structural cracks inside the small PrK module on the Russian segment of the space station, which lies between a Progress spacecraft airlock and the Zvezda module. The problem has been a long-running worry for Russian and US operators of the station, especially after the rate of leakage doubled in 2024. This prompted NASA officials to label the leak as a "high likelihood" and "high consequence" risk. However, recently two sources indicated that the leaks have stopped. And NASA has now confirmed this.

"Following additional inspections and sealing activities, the pressure in the transfer tunnel attached to the Zvezda Service Module of the International Space Station, known as the PrK, is holding steady in a stable configuration," a space agency spokesman, Josh Finch, told Ars. "NASA and Roscosmos continue to monitor and investigate the previously observed cracks for any future changes that may occur."

For the better part of half a decade, Russian cosmonauts have been searching for the small leaks like a proverbial needle in a haystack. They would periodically close the hatch leading to the PrK module and then, upon re-opening it, look for tiny accumulations of dust to indicate the leak sites. Then the Russian cosmonauts would apply a sealant known as Germetall-1 (which has now been patented) to the cracks. They would close the hatch again, monitor the pressure inside the PrK module, and begin the search anew for additional leaks. This process went on for years.

The European Space Agency has acknowledged yet another security incident after a cybercriminal posted an offer on BreachForums the day after Christmas claiming to have stolen over 20GB of data including source code, confidential documents, API tokens and credentials.

The attacker claims they gained access to ESA-linked external servers on December 18 and remained connected for about a week, during which they allegedly exfiltrated private Bitbucket repositories, CI/CD pipelines, Terraform files and hardcoded credentials. ESA said that the breach may have affected only "a very small number of external servers" used for unclassified engineering and scientific collaboration, and that it has initiated a forensic security analysis.

An anonymous reader quotes a report from the San Francisco Chronicle: A long stretch of curb in San Francisco's Mission District might contain a whole menagerie of parked vehicles: hatchbacks, SUVs, dusty pick-ups, chic Teslas. And recently, Waymo robotaxis. That's what Kyle Grochmal saw walking through the northeast Mission District on Monday afternoon. Cutting down York Street, he glimpsed a tell-tale white electric Jaguar in one of the coveted one-hour spots, its sensors spinning. The Waymo sat there for at least 20 minutes, Grochmal said. He whipped out his cell phone and started recording. After the Waymo drove off, another one showed up within an hour and took the same spot.

"This is something I started to notice about six months ago," Grochmal said, recalling how disorienting it was to be strolling down a largely deserted sidewalk, and suddenly hear the purring motor and soft click of autonomous vehicle cameras. He'd look up to see a Waymo "just sitting there, not loading anyone." But Waymo's use of public curb space raised questions for Grochmal, who wonders whether San Franciscans are prepared to have their infrastructure dominated by autonomous vehicles. "Say Tesla gets to self-driving, so people have personal AVs," he said. "So then do people from Palo Alto get dropped off in San Francisco and let their cars drive around all day searching for free parking?"

Such a future seems particularly unsettling in the northeast Mission, where snug streets couldn't handle much traffic, and competition for parking is already fierce. A recent influx of Artificial Intelligence companies brought many more workers and cars, as well as robotaxis that trawl the blocks, waiting for fares. It makes sense, to Grochmal, that some of them wind up squatting in one-hour spaces. [...] Still, it's conceivable that residents will lose patience with Waymo, and other AV companies, as the fleets scale up and the vehicles compete more aggressively with humans for parking.

A UK-based company has successfully powered up a microwave-sized space factory in orbit, proving it can run a 1,000C furnace to manufacture ultra-pure semiconductor materials in microgravity. "The work that we're doing now is allowing us to create semiconductors up to 4,000 times purer in space than we can currently make here today," says Josh Western, CEO of Space Forge. "This sort of semiconductor would go on to be in the 5G tower in which you get your mobile phone signal, it's going to be in the car charger you plug an EV into, it's going to be in the latest planes." The BBC reports: Conditions in space are ideal for making semiconductors, which have the atoms they're made of arranged in a highly ordered 3D structure. When they are being manufactured in a weightless environment, those atoms line up absolutely perfectly. The vacuum of space also means that contaminants can't sneak in. The purer and more ordered a semiconductor is, the better it works.

[...] The company's mini-factory launched on a SpaceX rocket in the summer. Since then the team has been testing its systems from their mission control in Cardiff. Veronica Viera, the company's payload operations lead, shows us an image that the satellite beamed back from space. It's taken from the inside of the furnace, and shows plasma - gas heated to about 1,000C -- glowing brightly. [...]

The team is now planning to build a bigger space factory -- one that could make semiconductor material for 10,000 chips. They also need to test the technology to bring the material back to Earth. On a future mission, a heat shield named Pridwen after the legendary shield of King Arthur will be deployed to protect the spacecraft from the intense temperatures it will experience as it re-enters the Earth's atmosphere.

NASA is closing its largest research library at the Goddard Space Flight Center amid budget cuts and campus consolidation, putting tens of thousands of largely non-digitized historical and scientific documents at risk of being warehoused or discarded. The New York Times reports: Jacob Richmond, a NASA spokesman, said the agency would review the library holdings over the next 60 days and some material would be stored in a government warehouse while the rest would be tossed away. "This process is an established method that is used by federal agencies to properly dispose of federally owned property," Mr. Richmond said.

The shutdown of the library at NASA's Goddard Space Flight Center in Greenbelt, Md., is part of a larger reorganization under the Trump administration that includes the closure of 13 buildings and more than 100 science and engineering laboratories on the 1,270-acre campus by March 2026. "This is a consolidation not a closure," said NASA spokeswoman Bethany Stevens. The changes were part of a long-planned reorganization that began before the Trump administration took office, she said. She said that shutting down the facilities would save $10 million a year and avoid another $63.8 million in deferred maintenance.

Goddard is the nation's premiere spaceflight complex. Its website calls it "the largest organization of scientists, engineers, and technologists who build spacecraft, instruments, and new technology to study Earth, the Sun, our solar system, and the universe." [...] The library closure on Friday follows the shutdown of seven other NASA libraries around the country since 2022, and included three libraries this year. As of next week, only three -- at the Glenn Research Center in Cleveland, the Ames Research Center in Mountain View, Calif., and the Jet Propulsion Laboratory in Pasadena, Calif. -- will remain open.

New Jersey has found its answer to the relentless flooding that has plagued the state's coastal and inland communities for decades: buy the homes, demolish them and turn the land back into open space permanently. The state's Blue Acres program has acquired some 1,200 properties since 1995, spending more than $234 million in federal and state funds to pay fair market value to homeowners exhausted by repeated floods from tropical storms, nor'easters, and heavy rain.

A Georgetown Climate Center report this month called the program a national model, crediting its success to faster processing than federal buyout programs, stable state funding and case managers who guide each homeowner through the process. The demolished homes become grass lots that absorb rainwater far better than concrete and asphalt.

Manville, a borough of 11,000 at the confluence of two rivers about 25 miles southwest of Newark, has sold 120 homes to the state for roughly $22 million between 2015 and 2024. Another 53 buyouts are underway there. The need for such programs is only growing. Sea levels along the New Jersey coast rose about 1.5 feet over the past century -- more than double the global rate -- and a Rutgers study predicts a further increase of 2.2 to 3.8 feet by 2100.

A November report from the Natural Resources Defense Council noted that billions in previously approved FEMA resilience grants have already been cancelled, making state-run initiatives like Blue Acres increasingly essential.

An anonymous reader shares a report: Getting to space is hard. In many ways, getting back is even harder. NASA soon aims to pull off the kind of re-entry it last conducted more than 50 years ago: safely returning astronauts to Earth after they fly to the moon and back. The mission is a big moment for NASA, which will put a crew on its Orion ship for the first time. The flight will test the spacecraft's heat shield, designed to protect the astronauts on board.

Re-entries of vehicles from orbit remain one of the high-stakes parts of any human spaceflight, given the stress they put on spacecraft. In 2003, NASA's Columbia Space Shuttle broke apart as it came back from low-Earth orbit due to a breach on the vehicle that occurred during launch. All seven astronauts on board were killed. Orion will be coming back to Earth from much further away than low-Earth orbit, where all recent human spaceflights have been conducted. That means its velocity and the energy it needs to disperse will be greater, putting even more stress on the heat shield.

During a test flight in 2022 that didn't include astronauts, Orion's heat shield didn't perform as expected. That sparked worries about crew safety on future missions, prompting NASA to investigate and address what happened. NASA will launch Orion with the astronauts on board as soon as February. [...] When the vehicle initially re-enters the Earth's atmosphere, it will be traveling around 25,000 miles an hour and face temperatures of 5,000 degrees as it slows down. The Orion craft, developed by Lockheed Martin for NASA, has a shield that is almost 17 feet in diameter. Installed on the vehicle's underside, the shield is covered in what is called an "ablative" material, which is designed to shift heat away from the craft during re-entry by burning off in a controlled manner.

PostNord is ending letter delivery in Denmark after a 90%+ collapse in mail volume. It marks the first known case of a national postal carrier abandoning letters entirely -- a symbolic milestone of a fully digitized society that's sparking nostalgia even among people who stopped sending mail years ago. The New York Times reports: Denmark has had a postal service for more than 400 years. But a steep decline in its use has led the Nordic country's longtime postal carrier to stop letter deliveries entirely, a change taking effect on Tuesday.

Danes have seen it coming for months: The carrier, PostNord, has been removing its red mailboxes, once a ubiquitous public fixture. The disappearance of the mailboxes is "what actually made people emotional," said Julia Lahme, a trend researcher and the director of Lahme, a Danish communications agency, "even though most of them hadn't sent a letter in 18 months."

Letter writing in the country has declined by more than 90 percent since 2000, according to PostNord, which is owned jointly by the Danish and Swedish governments. Next year, in Denmark, it will only deliver packages, although in Sweden it will continue to deliver letters.

The change comes partly as a result of a drop-off in government mail. Denmark is one of the world's most digitized countries. Only 250,000 people, or less than 5 percent of the population, still receive their official communications in the mail. "People simply do not rely on physical letters the way they used to," Andreas Brethvad, the communications director of PostNord Denmark, said in an emailed statement. He said that because nine in 10 Danes shop online each month, the change "is about keeping up with times to meet the demands of society. It's a natural evolution." The report notes that snail mail lovers will still be able to send and receive letters through Dao, a private company. "While some Danes are quietly mourning a service that, for the most part, they had largely stopped using, the transition feels like a sign of the times," reports the Times.

The Wall Street Journal reports that Boston's once-booming biotech sector has hit a sharp downturn, leaving newly minted Ph.D.s struggling to find work as venture funding dries up, lab space sits empty, and companies downsize or relocate amid rising costs and policy uncertainty. The Wall Street Journal reports: Boston's biotech sector, long a vital economic engine for one of America's wealthiest metro areas, is sputtering. A double whammy of cutbacks in venture capital and government funding have taken a toll, leading to layoffs and struggles for job seekers. For workers who thought they would easily launch into a well-paying science career, the downturn has been especially harsh.

Massachusetts experienced a slight decline in its roughly 65,000 biotech research-and-development jobs in 2024 after years of mostly strong increases, including during the Covid-19 pandemic, according to federal data. The numbers indicate that job losses continued through at least June, while hiring remains sluggish. By the end of September, nearly 28% of greater Boston's laboratory space sat empty, according to the latest estimates from real-estate firm CBRE. "Every stage of the life cycle has been impacted by policy or regulatory uncertainty this year," said Kendalle Burlin O'Connell, chief executive of MassBio, an industry trade group. The impact has hit startups especially hard, she said.

A continued downturn poses risks for a region where workers will put up with sky-high real-estate costs if they can land high-paying jobs. Massachusetts faces competition from other states and China, which are eager to peel away talent and investment. "There are states and countries chasing us every single day," Gov. Maura Healey said in an interview. In late October, the Democrat testified before the Massachusetts legislature in support of a $400 million "competitiveness agenda" that she is seeking to spur new investment and supplement research funding lost this year. Lawmakers are reviewing the bill, a House spokesman said.

A group of researchers is calling on universities to treat consulting work as a strategic priority, arguing that bureaucratic obstacles and inconsistent policies have left a massive revenue stream largely untapped even as higher education institutions face mounting financial pressures. (Consulting work refers to academics offering their advice and expertise to outside organizations -- industry, government, civil society -- for a fee. It's one of the most direct and scalable ways academics can shape the world beyond campus, and the projects are typically shorter in duration and easier to set up than alternatives like spin-out companies.)

Writing in Nature, the authors found that fewer than 10% of academic staff at nine UK universities engaged in consulting work, and the number of academic consulting contracts across the country fell 38% over the past decade -- from around 99,000 in 2014-15 to fewer than 62,000 in 2023-24.

Academic consulting in the UK is currently worth roughly $675-810 million annually, a figure that represents just 0.6% of the country's $124 billion management consulting market. The authors examined policies at 30 universities and surveyed 76 fellows from a UK Research and Innovation programme. Two-thirds of the surveyed institutions had publicly available consulting policies, and two outright prohibit private consulting. Permitted consulting time ranged from unlimited to 30 days or fewer per year, institutional charges varied from 10-40% of fees, and contract approval timelines stretched from 24 hours to several months.

Private consultancy firms are moving into this space, capturing opportunities that universities neglect. Small-scale projects under $6,750 are commonly sidelined by university contract offices because they represent too small an income for strained institutional resources. The authors propose standardized policies across institutions, shared consulting income with departments, and faster approval processes -- reforms similar to those already implemented for university spin-out companies.

Google's Pixel 10 series arrived this year as the company's first eSIM-only lineup in the United States, forcing users who wanted to review or buy the new phones to abandon their physical SIM cards entirely. Ryan Whitwam, a senior technology reporter at Ars Technica, made the switch and now regrets it, he says. "In the three months since Google forced me to give up my physical SIM card, I've only needed to move my eSIM occasionally," Whitwam wrote. "Still, my phone number has ended up stuck in limbo on two occasions."

The core problem is how carriers handle verification. When an eSIM transfer fails and you need support, carriers authenticate via SMS -- a message you cannot receive because your SIM is broken. "What should have been 30 seconds of fiddling with a piece of plastic turned into an hour standing around a retail storefront," Whitwam noted.

Apple started this trend by dropping the SIM slot on iPhone 14 in 2022. The space savings are modest: the international iPhone 17 has a smaller battery than its eSIM-only counterpart by only about 8%. Google's US Pixel 10 models offer no such trade-off -- they lack the SIM slot but "unfortunately don't have more of anything compared to the international versions." He concludes: "A physical SIM is essentially foolproof, and eSIM is not."

An anonymous reader shared this report from the BBC: There is growing controversy over recent evidence suggesting that a mysterious force known as dark energy might be changing in a way that challenges our current understanding of time and space. An analysis by a South Korean team has hinted that, rather than the Universe continuing to expand, galaxies could be pulled back together by gravity, ending in what astronomers call a "Big Crunch".

The scientists involved believe that they may be on the verge of one of the biggest discoveries in astronomy for a generation. Other astronomers have questioned these findings, but these critics have not been able to completely dismiss the South Korean team's assertions...

The controversy began in March with unexpected results from an instrument on a telescope in the Arizona desert called the Dark Energy Spectroscopic Instrument (Desi)... The data hinted that acceleration of the galaxies had changed over time, something not in line with the standard picture, according to Prof Ofer Lehav of University College London, who is involved with the Desi project. "Now with this changing dark energy going up and then down, again, we need a new mechanism. And this could be a shake up for the whole of physics," he says. Then in November the Royal Astronomical Society (RAS) published research from a South Korean team that seems to back the view that the weirdness of dark energy is weirder still.

Prof Young Wook Lee of Yonsei University in Seoul and his team went back to the kind of supernova data that first revealed dark energy 27 years ago. Instead of treating these stellar explosions as having one standard brightness, they adjusted for the ages of the galaxies they came from and worked out how bright the supernovas really were. This adjustment showed that not only had dark energy changed over time, but, shockingly, that the acceleration was slowing down... If, as Prof Lee's results suggest, the force that is pushing galaxies away from each other — dark energy — is weakening, then one possibility is that it becomes so weak that gravity begins to pull the galaxies back together.