Main menu

Feed aggregator

'Ubuntu Web Remix' Distro Offers Firefox-Based Chrome OS Alternative

Slashdot - Sun, 11/22/2020 - 08:34
Rudra Saraswat is the creator of the Ubuntu Unity distro (which uses the Unity interface in place of Ubuntu's GNOME shell). But this week they released Ubuntu Web Remix, "a privacy-focused, open source alternative to Google Chrome OS/Chromium OS" using Firefox instead of Google Chrome/Chromium. Liliputing reports: If the name didn't give it away, this operating system is based on Ubuntu, but it's designed to offer a Chrome OS-like experience thanks to a simplified user interface and a set of pre-installed apps including the Firefox web browser, some web apps from /e/, and Anbox, a tool that allows you to run Android apps in Linux... You don't get the long battery life, cloud backup, and many other features that make Chromebooks different from other laptops (especially other cheap laptops). But if you're looking for a simple, web-centric operating system that isn't made by a corporate giant? Then I guess it's nice to have the option. Rudra Saraswat writes: An easy web-app (wapp) format has been created to package web-apps for the desktop. You can now create your own web apps using web technologies, package them for the desktop and install them easily. An experimental wapp store can be found at store.ubuntuweb.co, for distributing web apps. Developers and packagers can do pull requests at gitlab.com/ubuntu-web/ubuntu-web.gitlab.io to contribute wapps.

Read more of this story at Slashdot.

Are There Active Volcanoes on Mars?

Slashdot - Sun, 11/22/2020 - 05:34
Mars is a dead planet — "Or is it?" asks the New York Times: Previous research has hinted at volcanic eruptions on Mars 2.5 million years ago. But a new paper suggests an eruption occurred as recently as 53,000 years ago in a region called Cerberus Fossae, which would be the youngest known volcanic eruption on Mars. That drives home the prospect that beneath its rusty surface pocked with gigantic volcanoes that have gone silent, some volcanism still erupts to the surface at rare intervals. "If this deposit is of volcanic origin then the Cerberus Fossae region may not be extinct and Mars may still be volcanically active today," scientists at the University of Arizona and Smithsonian Institution, write in their paper — which was posted online ahead of peer review and has been submitted to the journal Icarus... If it holds up to scrutiny, the discovery would have large implications for Mars. In geological terms, 53,000 years is the blink of an eye, suggesting Mars might well still be volcanically active now. It could also have big implications for the search for life on Mars. Such volcanic activity could melt subsurface ice, providing a potential habitable environment for living things. "To have life, you need energy, carbon, water and nutrients," said Steven Anderson, an earth sciences professor at the University of Northern Colorado in Greeley, who was not involved in the paper. "And a volcanic system provides all of those."

Read more of this story at Slashdot.

Apple Lets Some Network Traffic Bypass Firewalls on MacOS Big Sur

Slashdot - Sun, 11/22/2020 - 02:34
"Security researchers are blasting Apple for a feature in the latest Big Sur release of macOS that allows some Apple apps to bypass content filters and VPNs..." reports Threatpost. "While users assumed Apple would fix the flaw before the OS emerged from beta into full release, this doesn't appear to have happened." "Beginning with macOS Catalina released last year, Apple added a list of 50 Apple-specific apps and processes that were to be exempted from firewalls like Little Snitch and Lulu," explains Ars Technica: The undocumented exemption, which didn't take effect until firewalls were rewritten to implement changes in Big Sur, first came to light in October. Patrick Wardle, a security researcher at Mac and iOS enterprise developer Jamf, further documented the new behavior over the weekend. To demonstrate the risks that come with this move, Wardle — a former hacker for the NSA — demonstrated how malware developers could exploit the change to make an end-run around a tried-and-true security measure... Wardle tweeted a portion of a bug report he submitted to Apple during the Big Sur beta phase. It specifically warns that "essential security tools such as firewalls are ineffective" under the change. Apple has yet to explain the reason behind the change.

Read more of this story at Slashdot.

Werner Herzog On Asteroids, Star Wars, and the 'Obscenity' of a City On Mars

Slashdot - Sun, 11/22/2020 - 00:34
78-year-old filmmaker Werner Herzog shared some interesting thoughts before the release of his new documentary on asteroids, Fireball: Visitors From Darker Worlds now available on Apple TV+. From Herzog's new interview with the science site inverse: Herzog tells Inverse he's less concerned than ever that a meteorite will destroy the Earth, but that doesn't mean we shouldn't still be worried about our own extinction. "It may be 100 million years to go until then," Herzog says, before adding, "within the next thousand years, we may have done such stupid things that we are not around anymore to contemplate it...." There's a theory that all life on Earth came from a meteorite. Do you think that's possible...? [I]f you expand the question, it wouldn't surprise me if we found life somewhere outside of our solar system, or even within our solar system, because we share the same chemistry with the universe. We share the same physics with the universe. And we share the same history with the universe. So with trillions and trillions and trillions of stars out there, it's highly likely that somewhere there are some forms of life. Probably not as good and interesting as in movies. We can be pretty certain there are no creatures out there like in Star Wars... Have you heard the theory that we're living inside a simulation? Yes, but I don't buy it. Because when I kick a soccer ball from the penalty spot, I know this is for real. If the goalie saves it, oh shit, this is for real. He also discusses the 1998 asteroid disaster film Deep Impact and his own appearance on Rick and Morty, as well as part on The Mandalorian — and the experience of watching its premiere with 1,000 hardcore Star Wars fans. ("It was unbelievable. The first credit appears and there's a shout of joy that you cannot describe... It's evident Star Wars is a new mythology for our times, whether you like it or not.") But though Herzog's films "often feature ambitious protagonists with impossible dreams, people with unique talents in obscure fields, or individuals who are in conflict with nature," according to Wikipedia, Herzog insists to Inverse that Elon Musk's plan to build a city on Mars is a "mistake." In a blistering criticism, Herzog describes the idea as "an obscenity," and says humans should "not be like the locusts...." Herzog is not opposed to going to Mars at all. In fact, the German filmmaker would "love to go [to Mars] with a camera with scientists." But the long-term vision of a Mars city is a "mistake." Herzog's main concern is that humanity should "rather look to keep our planet habitable," instead of trying to colonize another one. In short, Mars is not a livable place. There is no liquid water at the surface, or air to breathe. Solar wind means inhabitants would be "fried like in a microwave," Herzog says.

Read more of this story at Slashdot.

In the Last Week America Experienced 1 Million New Coronavirus Cases

Slashdot - Sat, 11/21/2020 - 23:47
The total number of U.S. coronavirus cases since the pandemic started has now surpassed 12 million, CNN reports — "an increase of more than 1 million cases in less than a week." Researchers at John Hopkins University calculate that over a quarter of a million Americans have now died from the disease. Almost every state has reported a rapid surge in cases, and nationwide numbers have been climbing much faster than ever before — with the country reporting a staggering 2.8 million infections since the beginning of the month. On Friday, more than 195,500 new infections were reported — the country's highest for a single day, and far beyond what the nation was seeing just weeks ago. The highest number of single-day cases during the country's summer surge was a little more than 77,100 in July, Johns Hopkins University data shows. The U.S. on Friday also recorded its highest number of Covid-19 patients in hospitals on a given day: just over 82,100 — according to the COVID Tracking Project. Rising death rates typically follow rising hospitalizations. In just the past week, more than 10,000 U.S. deaths have been reported — nearly double the weekly death toll of just a month ago... The virus is still running unabated in the U.S. and the rate of rising cases is now "dramatically" different from what it was before, White House Coronavirus task force coordinator Dr. Deborah Birx told CNN's Chief Medical Correspondent Dr. Sanjay Gupta.... The good news? Experts say promising vaccines are on the horizon and until then, there are things the American public can do to help hold down the virus. Those include wearing a mask, social distancing, avoiding crowds and washing hands regularly. The University of Washington's Institute for Health Metrics and Evaluation projected this week about 65,000 lives could be saved by March 1 if 95% of Americans wore masks. The rising graph (midway through the story) says it all.

Read more of this story at Slashdot.

Does the Human Brain Resemble the Universe?

Slashdot - Sat, 11/21/2020 - 22:34
"Does the human brain resemble the Universe?" teases an announcement that an astrophysicist of the University of Bologna and a neurosurgeon of the University of Verona "compared the network of neuronal cells in the human brain with the cosmic network of galaxies...and surprising similarities emerged." Slashdot reader Iwastheone shares their report: Despite the substantial difference in scale between the two networks (more than 27 orders of magnitude), their quantitative analysis, which sits at the crossroads of cosmology and neurosurgery, suggests that diverse physical processes can build structures characterized by similar levels of complexity and self-organization. The human brain functions thanks to its wide neuronal network that is deemed to contain approximately 69 billion neurons. On the other hand, the observable universe can count upon a cosmic web of at least 100 billion galaxies. Within both systems, only 30% of their masses are composed of galaxies and neurons. Within both systems, galaxies and neurons arrange themselves in long filaments or nodes between the filaments. Finally, within both system, 70% of the distribution of mass or energy is composed of components playing an apparently passive role: water in the brain and dark energy in the observable Universe. Starting from the shared features of the two systems, researchers compared a simulation of the network of galaxies to sections of the cerebral cortex and the cerebellum. The goal was to observe how matter fluctuations scatter over such diverse scales. "We calculated the spectral density of both systems. This is a technique often employed in cosmology for studying the spatial distribution of galaxies", explains Franco Vazza (astrophysicist at the University of Bologna). "Our analysis showed that the distribution of the fluctuation within the cerebellum neuronal network on a scale from 1 micrometre to 0.1 millimetres follows the same progression of the distribution of matter in the cosmic web but, of course, on a larger scale that goes from 5 million to 500 million light-years". The two researchers also calculated some parameters characterising both the neuronal network and the cosmic web: the average number of connections in each node and the tendency of clustering several connections in relevant central nodes within the network. "Once again, structural parameters have identified unexpected agreement levels. Probably, the connectivity within the two networks evolves following similar physical principles, despite the striking and obvious difference between the physical powers regulating galaxies and neurons", adds Alberto Feletti (neurosurgeon at the University of Verona).

Read more of this story at Slashdot.

Email and Web Traffic Redirected for Multiple Cryptocurrency Sites After GoDaddy Attack

Slashdot - Sat, 11/21/2020 - 21:34
"Fraudsters redirected email and web traffic destined for several cryptocurrency trading platforms over the past week," reports security researcher Brian Krebs: The attacks were facilitated by scams targeting employees at GoDaddy, the world's largest domain name registrar, KrebsOnSecurity has learned... This latest campaign appears to have begun on or around Nov. 13, with an attack on cryptocurrency trading platform liquid.com. "A domain hosting provider 'GoDaddy' that manages one of our core domain names incorrectly transferred control of the account and domain to a malicious actor," Liquid CEO Kayamori said in a blog post. "This gave the actor the ability to change DNS records and in turn, take control of a number of internal email accounts. In due course, the malicious actor was able to partially compromise our infrastructure, and gain access to document storage." In the early morning hours of Nov. 18 Central European Time (CET), cyptocurrency mining service NiceHash disclosed that some of the settings for its domain registration records at GoDaddy were changed without authorization, briefly redirecting email and web traffic for the site. NiceHash froze all customer funds for roughly 24 hours until it was able to verify that its domain settings had been changed back to their original settings. "At this moment in time, it looks like no emails, passwords, or any personal data were accessed, but we do suggest resetting your password and activate 2FA security," the company wrote in a blog post. NiceHash founder Matjaz Skorjanc said the unauthorized changes were made from an Internet address at GoDaddy, and that the attackers tried to use their access to its incoming NiceHash emails to perform password resets on various third-party services, including Slack and Github. But he said GoDaddy was impossible to reach at the time because it was undergoing a widespread system outage in which phone and email systems were unresponsive. "We detected this almost immediately [and] started to mitigate [the] attack," Skorjanc said in an email to this author. "Luckily, we fought them off well and they did not gain access to any important service. Nothing was stolen...." [S]everal other cryptocurrency platforms also may have been targeted by the same group, including Bibox.com, Celcius.network, and Wirex.app. None of these companies responded to requests for comment. In response to questions from KrebsOnSecurity, GoDaddy acknowledged that "a small number" of customer domain names had been modified after a "limited" number of GoDaddy employees fell for a social engineering scam.

Read more of this story at Slashdot.

Why Amazon's Echo Shines an Ominous Red Light When Its Microphone is Muted

Slashdot - Sat, 11/21/2020 - 20:34
This year Amazon followed up its cylindrical Echo (and its hockey puck-shaped Echo Dot) with a cloth-wrapped sphere-shaped Echo device. And Fast Company reports that one significant change was to the light pipe, "that glowing ring on top of the Echo that signals it's talking or thinking. "For the fourth generation, that light pipe has been moved to the bottom of the device, to reflect off tables or countertops, and provide a more ambient lighting experience that blends into one's environment — with a catch." Once you hit the privacy button on your Echo, deafening it from hearing your speech, the ring glows a DEFCON 2 red until you unmute it. (Note: Google uses an orange to convey mute for its Assistant, as does Sony's new PS5 controller that has a mic built in.) It's not just overt; it's borderline warlike, adding a Red October glow to your space. Echos have always glowed red when muted. Now your environment does, too. When I mention this design decision, which seems to punish consumers who prefer privacy, Miriam Daniel, vice president of Echo and Alexa devices at Amazon, acknowledges, but brushes off, the criticism. "[Red] makes for a strong [statement]. There's always a tradeoff. Is it too bright? Annoying? Too in your face?" she muses. But she argues that the greater benefit is that "it gives people a sense of comfort knowing the mic isn't working." The article notes that in 2019, Amazon announced it had already sold 100 million Alexa-powered devices.

Read more of this story at Slashdot.

In Historic Test, US Navy Shoots Down an Intercontinental Ballastic Missile

Slashdot - Sat, 11/21/2020 - 19:34
"In a historic test, a U.S. Navy guided missile destroyer shot down an intercontinental ballistic missile (ICBM) warhead aimed at a patch of ocean off the Hawaiian Islands," reports Popular Mechanics: Once the missile launched, a network of sensors picked it up. The data was then handed off to the guided missile destroyer USS John Finn, which launched a SM-3 Block IIA interceptor. Just as the ICBM released a [simulated] nuclear warhead, the SM-3 released an Exoatmospheric Kill Vehicle (EKV) designed to smash itself into the incoming warhead. Infrared cameras recorded a visible explosion as the EKV took out the simulated nuclear warhead. Most types of ballistic missiles are basically small payload space rockets designed to boost nuclear warheads into low-Earth orbit. Once in space, the warhead coasts through orbit at several thousand miles per hour — the so-called midcourse phase when the warhead is midway between its launch point and target. The warhead then de-orbits into a trajectory that sends it plunging toward its target. Meanwhile, space-based infrared sensors pick up the hot launch plume of the ballistic missile. A launch alert is passed on to ground-based long range radars, which search the skies for the incoming threat. As the missile falls away and the warhead continues on to its target, missile defense radars track the target, plot its trajectory, and alert any "shooters" in the flight path capable of shooting down the warhead. The shooter then launches an interceptor, and the EKV steers itself into the warhead path... The article includes video of the test, and concludes that the ability to shoot down missiles is "terrible news for China" — while adding this "could very well cause Beijing to increase its nuclear arsenal."

Read more of this story at Slashdot.

Assigning Homework Exacerbates Class Divides, Researchers Find

Slashdot - Sat, 11/21/2020 - 18:34
"Education scholars say that math homework as it's currently assigned reinforces class divides in society and needs to change for good," according to Motherboard — citing a new working paper from education scholars: Status-reinforcing processes, or ones that fortify pre-existing divides, are a dime a dozen in education. Standardized testing, creating honors and AP tracks, and grouping students based on perceived ability all serve to disadvantage students who lack the support structures and parental engagement associated with affluence. Looking specifically at math homework, the authors of the new working paper wanted to see if homework was yet another status-reinforcing process. As it turns out, it was, and researchers say that the traditional solutions offered up to fix the homework gap won't work. "Here, teachers knew that students were getting unequal support with homework," said Jessica Calarco, the first author of the paper and an associate professor of psychology at Indiana University. "And yet, because of these standard, taken-for-granted policies that treated homework as students' individual responsibilities, it erased those unequal contexts of support and led teachers to interpret and respond to homework in these status-reinforcing ways...." The teachers interviewed for the paper acknowledged the unequal contexts affecting whether students could complete their math homework fully and correctly, Calarco said. However, that did not stop the same teachers from using homework as a way to measure students' abilities. "The most shocking and troubling part to me was hearing teachers write off students because they didn't get their homework done," Calarco said.... Part of the reason why homework can serve as a status-reinforcing process is that formal school policies and grading schemes treat it as a measure of a student's individual effort and responsibility, when many other factors affect completion, Calarco said.... "I'm not sure I want to completely come out and say that we need to ban homework entirely, but I think we need to really seriously reconsider when and how we assign it."

Read more of this story at Slashdot.

After Restoring YouTube-dl, GitHub Revamps Its Copyright Takedown Policy

Slashdot - Sat, 11/21/2020 - 17:39
On October 23rd GitHub initially complied with a takedown request for the open-source project youtube-dl — and then after 24 days, reinstated it. "If there's a silver lining to the episode, it's that GitHub is implementing new policies to avoid a repeat of a repeat situation moving forward," reports Engadget: First, it says a team of both technical and legal experts will manually evaluate every single section 1201 claim. In instances where there's any ambiguity to a claim, the company says it will err on the side of developers and leave their repository online. If the company's technical and legal teams ultimately find any issues with a project, GitHub will give its owners the chance to address those problems before it takes down their work. Following a takedown, it will continue to give people the chance to recover their data — provided it doesn't include any offending code. GitHub is also establishing a $1 million defense fund to provide legal aid to developers against suspect section 1201 claims, as well as doubling down on its lobbying work to amend the DMCA and other similar copyright laws across the world.

Read more of this story at Slashdot.

SpaceX Begins a Day With Two Falcon 9 Launches, Seventh Flight of a Recycled Rocket

Slashdot - Sat, 11/21/2020 - 16:47
While tonight will see SpaceX's 16th launch of its broadband satellites, that launch will also make history, reports CNET: The first stage of the Falcon 9 rocket is set to make its seventh flight, which would be a record for rocket recycling for the company. The booster previously flew on four Starlink missions and a pair of larger telecom satellite launches. SpaceX will likely attempt to land the booster on a droneship in the Atlantic shortly after launch and may also try to catch the two halves of the nose cone or fairing with another pair of ships. This all happens just about 10 hours after SpaceX is scheduled to perform another big launch on the other side of the country. On Saturday morning [in just one half hour], another Falcon 9 will blast off from Vandenburg Air Force Base in California carrying the new NASA/European Space Agency Sentinel 6 Michael Freilich satellite designed to monitor global sea level rise and improve weather forecasting... You can watch the whole thing right here. SpaceX has also begun tweeting photos taken last weekend during its Crew Dragon capsule's flight from earth— and its arrival at the International Space Station.

Read more of this story at Slashdot.

Masks are Effective, Despite One Flawed Study From Denmark

Slashdot - Sat, 11/21/2020 - 15:34
"I think the overwhelming body of evidence suggests that masks are effective," the lead author of a study recently cited by America's Center for Disease Control told the Washington Post. They were responding to another (very controversial) outlier study whose findings "conflict with those from a number of other studies," according to the New York Times, citing numerous experts. "Critics were quick to note [that] study's limitations, among them that the design depended heavily on participants reporting their own test results and behavior, at a time when both mask-wearing and infection were rare in Denmark." The Washington Post reports: In the large, randomized study published Wednesday in the Annals of Internal Medicine, researchers observed more than 6,000 people in Denmark from April to June when mask-wearing was not required in the country. Fewer people in the group that was advised to wear masks contracted the virus — or about a 14 percent reduced risk because of mask-wearing — but the difference was not statistically significant, indicating that the medical masks issued were not particularly effective at preventing the wearers from being infected. Other experts, however, argue that the study was conducted when there was relatively less community spread of the virus and that testing the participants' antibodies cannot reliably measure whether they had the virus during the time of the study. "We think you should wear a face mask at least to protect yourself, but you should also use it to protect others," lead author Henning Bundgaard told The Washington Post. "We consider that the conclusion is we should wear face masks." Bundgaard said even the small risk reduction masks offer "is very important, considering it is a life-threatening disease..." "Because the issue has become so politicized, there's a real risk — and it's already being used in this way — that studies like this will be sort of cherry-picked and presented as conclusive evidence that masks are completely ineffective," Columbia University virologist Angela Rasmussen said... In letters and blog posts, public health experts express concern about the design of the study and warn that policymakers could misinterpret the research to mean that masks are ineffective. "However, the more accurate translation is that this study is uninformative regarding the benefits (or lack thereof) of wearing masks outside of the healthcare setting," one letter states. "As such, we caution decision-makers and the media from interpreting the results of this trial as being anything other than artifacts of weak design." Even the Denmark study itself acknowledged its own limitations, citing "Inconclusive results, missing data, variable adherence, patient-reported findings on home tests, no blinding, and no assessment of whether masks could decrease disease transmission from mask wearers to others." And it also acknowledges large gaps in adherence to proper mask usage among its participants: "Based on the lowest adherence reported in the mask group during follow-up, 46% of participants wore the mask as recommended, 47% predominantly as recommended, and 7% not as recommended." The Post notes that America's Center for Disease Control reiterated that people do benefit from wearing a mask that can filter out virus-carrying droplets, and last week "cited multiple studies evaluating mechanical evidence that concluded masks can block certain respiratory particles, depending on the material of the mask..."

Read more of this story at Slashdot.

Deep Frozen Arctic Microbes Are Waking Up

Slashdot - Sat, 11/21/2020 - 13:00
An anonymous reader shares an opinion piece from Scientific American: Permafrost covers 24 percent of the Earth's land surface, and the soil constituents vary with local geology. Arctic lands offer unexplored microbial biodiversity and microbial feedbacks, including the release of carbon to the atmosphere. In some locations, hundreds of millions of years' worth of carbon is buried. The layers may still contain ancient frozen microbes, Pleistocene megafauna and even buried smallpox victims. As the permafrost thaws with increasing rapidity, scientists' emerging challenge is to discover and identify the microbes, bacteria and viruses that may be stirring. Some of these microbes are known to scientists. Methanogenic Archaea, for example metabolize soil carbon to release methane, a potent greenhouse gas. Other permafrost microbes (methanotrophs) consume methane. The balance between these microbes plays a critical role in determining future climate warming. Others are known but have unpredictable behavior after release... It is clear that the warmer we make the Arctic, the weirder it will get, as temperatures at the surface become more extreme and thawing deepens. With the coalescence of microbes reawakening from the deep and surface conditions unprecedented in human history, it is challenging to assess risks accurately without improved Arctic microbial datasets. We should pay attention to both known unknowns, such as antibiotic-resistant bacteria, and unknown unknowns, including the potential risks from the resurrection of ancient and poorly described viral genomes from Arctic ice by synthetic biologists. For all of these reasons, we must come up with guidelines for future Arctic research. As travel through the region increases, the likelihood of pathogen export and import rises as well. The planetary protection guidelines that space agencies follow to prevent interplanetary contamination can provide a framework for how microbial investigation can safely continue. Biosurveillance measures must be put into place to protect communities in the Arctic and beyond. As the Arctic continues to transform, one thing is clear: as climate change warms this microbial repository during the 21st century, the full range of consequences is yet to be told.

Read more of this story at Slashdot.

T-Mobile Becomes First Carrier To Enable 988 Number For Mental Health Services

Slashdot - Sat, 11/21/2020 - 10:00
T-Mobile has added support for the 988 emergency mental health services number more than a year and a half ahead of the Federal Communications Commission's deadline, the company announced on Friday. The Verge reports: T-Mobile customers who dial 988 will be connected to the National Suicide Prevention Lifeline (NSPL) and its network of crisis centers across the US. T-Mobile says it is the first carrier in the US to make 988 available to its customers. T-Mobile chief technology officer Abdul Saad said in a statement that making the shorter emergency number available to customers was "a matter of urgency for us, particularly as the COVID-19 pandemic continues and the holiday season approaches." People in need of mental health support can still contact the NSPL by calling 1-800-273-8255 (1-800-273-TALK) or by using online chats.

Read more of this story at Slashdot.

Astronomers Discover New 'Fossil Galaxy' Buried Deep Within the Milky Way

Slashdot - Sat, 11/21/2020 - 07:00
fahrbot-bot shares a report from Phys.Org: Scientists working with data from the Sloan Digital Sky Surveys' Apache Point Observatory Galactic Evolution Experiment (APOGEE) have discovered a 'fossil galaxy' hidden in the depths of our own Milky Way. The proposed fossil galaxy may have collided with the Milky Way ten billion years ago, when our galaxy was still in its infancy. Astronomers named it Heracles, after the ancient Greek hero who received the gift of immortality when the Milky Way was created. The remnants of Heracles account for about one third of the Milky Way's spherical halo. But if stars and gas from Heracles make up such a large percentage of the galactic halo, why didn't we see it before? The answer lies in its location deep inside the Milky Way. "To find a fossil galaxy like this one, we had to look at the detailed chemical makeup and motions of tens of thousands of stars," says Ricardo Schiavon from Liverpool John Moores University (LJMU) in the UK, a key member of the research team. "That is especially hard to do for stars in the center of the Milky Way, because they are hidden from view by clouds of interstellar dust. APOGEE lets us pierce through that dust and see deeper into the heart of the Milky Way than ever before." APOGEE does this by taking spectra of stars in near-infrared light, instead of visible light, which gets obscured by dust. Over its ten-year observational life, APOGEE has measured spectra for more than half a million stars all across the Milky Way, including its previously dust-obscured core. To separate stars belonging to Heracles from those of the original Milky Way, the team made use of both chemical compositions and velocities of stars measured by the APOGEE instrument. [...] Stars originally belonging to Heracles account for roughly one third of the mass of the entire Milky Way halo today -- meaning that this newly-discovered ancient collision must have been a major event in the history of our galaxy. That suggests that our galaxy may be unusual, since most similar massive spiral galaxies had much calmer early lives. The findings have been reported in Monthly Notices of the Royal Astronomical Society.

Read more of this story at Slashdot.

Rocket Lab Becomes Second Company After SpaceX To Launch and Land Orbital Rocket

Slashdot - Sat, 11/21/2020 - 03:30
Thelasko shares a report from Forbes: In a major milestone, the New Zealand-based launch company Rocket Lab has successfully recovered an orbital-class rocket after parachuting it back to Earth from near-space -- only the second company in history ever to do so. Yesterday, Thursday, November 20 at 9.20 P.M. Eastern Time, the company's two-stage Electron rocket lifted off from the company's launch site on the Mahia Peninsula on New Zealand's North Island. Named 'Return to Sender', the mission lofted 30 satellites into a sun-synchronous orbit 500 kilometers above the surface of Earth -- the most satellites ever flown on an Electron rocket. Of the satellites launched, 24 were small communications satellites called "SpaceBees" from the California-based company Swarm Technologies. The others included a space junk removal test, a maritime observation satellite, and an earthquake investigation satellite -- while a small gnome also made its way to space for charity. The launch was especially notable, however, for Rocket Lab's recovery efforts. Shortly after the launch, the first stage of the rocket descended back to Earth under parachute, falling into the ocean where it was then recovered by a waiting ship several hours later. Rocket Lab's plan is to catch its smaller rockets with a helicopter as they fall from space under a parachute. At some point, possibly next year, the first helicopter recovery will be attempted. "First, the company says it wants to perform a few more splashdown tests in the ocean like this one, to check everything is nominal," reports Forbes. "If all goes well, however, SpaceX quite soon might not be the only private company that's able to launch, recover, and re-launch its own rockets."

Read more of this story at Slashdot.

Tesla Model 3 Crash Hurls Battery Cells Into Nearby Home

Slashdot - Sat, 11/21/2020 - 02:10
According to a facebook post from the police department of Corvallis, Oregon, a Tesla Model 3 crashed at over 100mph, causing batteries from the Tesla to enter two different residences by breaking through the windows, one landing on a person's lap and the second landing on a bed, catching the bedding on fire. "A tire was ripped from the car during the collision and struck the second story siding of a nearby apartment complex with such force that it ruptured the water pipes within the wall, destroying the bathroom to the apartment and flooding the downstairs portion of the apartment as well," adds ExtremeTech. From the report: Tesla goes to some trouble to make certain that the battery cells in its vehicles don't go flying in the event of a collision. But the nature of this impact was obviously sufficient to break whatever solution the manufacturer has developed for dealing with the problem. Previous teardowns of the Model 3 battery pack have shown that the cells are sealed in place with high-strength epoxy. With that said, there does appear to be a unique problem for BEVs in a situation like this. According to a follow-up post, the Model 3 battery cells can remain hot to the touch and might cause burns for up to 24 hours following involuntary dispersal. That kind of hazard -- specifically, the length of time you might be at risk from harm due to leftover detritus -- seems a potentially significant issue in certain situations. Tesla's epoxy solution shows it has considered the problem, but there may be reason to revisit things. It is unclear if individual cells remain at significant risk for secondary ignition after being separated from the main battery for any length of time or if the majority of fire risk is in the immediate period post-impact. The driver, incidentally, survived, which seems to say something good about Tesla's crash survival measures, at the least. The vehicle, needless to say, did not.

Read more of this story at Slashdot.

Tech Organizations Back 'Inclusive Naming Initiative'

Slashdot - Sat, 11/21/2020 - 01:30
New submitter LeeLynx shares a report from The Register: A new group called the "Inclusive Naming Initiative" has revealed its existence and mission "to help companies and projects remove all harmful and unclear language of any kind and replace it with an agreed-upon set of neutral terms." Akamai, Cisco, the Cloud Native Computing Foundation, IBM, the Linux Foundation, Red Hat, and VMware are all participants. The group has already offered a Word replacement list that suggests alternatives to the terms whitelist, blacklist, slave, and master. There's also a framework for evaluating harmful language that offers guidance on how to make changes. Red Hat's post announcing its participation in the Initiative links to a dashboard listing all instances of terms it wants changed and reports over 330,000 uses of "Master" and 105,000 uses of "Slave," plus tens of thousands and whitelists and blacklists. Changing them all will be a big job, wrote Red Hat's senior veep and CTO Chris Wright. "On a technical level, change has to be made in hundreds of discrete communities, representing thousands of different projects across as many code repositories," Wright wrote. "Care has to be taken to prevent application or API breakage, maintain backward compatibility, and communicate the changes to users and customers." The Initiative nonetheless hopes to move quickly, with its roadmap calling for best practices to be defined during Q1 2021, case studies to be available in Q3 2021 and a certification program delivered in Q4 2021.

Read more of this story at Slashdot.

Xbox Series X Controller Support Coming To Apple Devices

Slashdot - Sat, 11/21/2020 - 00:50
Apple and Microsoft are working on adding support for the Xbox Series X controller to Apple devices, according to an Apple Support page spotted by a Reddit user. MacRumors reports: The support page states that Apple devices only support the Xbox Wireless Controller with Bluetooth, Xbox Elite Wireless Controller Series 2, Xbox Adaptive Controller, PlayStation DualShock 4 Wireless Controller, and various other MFi Bluetooth controllers. However, small print on the page states: "Microsoft and Apple are working together to bring compatibility for the Xbox Series X controller to customers in a future update." There is no mention of the Sony PlayStation 5 DualSense Controller or the Amazon Luna Controller on the Apple Support page, but MacRumors has spotted code mentioning the controllers in the iOS and iPadOS 14.3 betas.

Read more of this story at Slashdot.

Pages

Subscribe to computing.ermysteds.co.uk aggregator