fahrbot-bot shares a report from Phys.Org: Researchers from the Moscow Institute of Physics and Technology teamed up with colleagues from the U.S. and Switzerland and returned the state of a quantum computer a fraction of a second into the past. They also calculated the probability that an electron in empty interstellar space will spontaneously travel back into its recent past. The study is published in Scientific Reports.

Quantum physicists from MIPT decided to check if time could spontaneously reverse itself at least for an individual particle and for a tiny fraction of a second. That is, instead of colliding billiard balls, they examined a solitary electron in empty interstellar space. "Suppose the electron is localized when we begin observing it. This means that we're pretty sure about its position in space. The laws of quantum mechanics prevent us from knowing it with absolute precision, but we can outline a small region where the electron is localized," says study co-author Andrey Lebedev from MIPT and ETH Zurich. The physicist explains that the evolution of the electron state is governed by Schrodinger's equation. Although it makes no distinction between the future and the past, the region of space containing the electron will spread out very quickly. That is, the system tends to become more chaotic. The uncertainty of the electron's position is growing. This is analogous to the increasing disorder in a large-scale system -- such as a billiard table -- due to the second law of thermodynamics.

"However, Schrodinger's equation is reversible," adds Valerii Vinokur, a co-author of the paper, from the Argonne National Laboratory, U.S. "Mathematically, it means that under a certain transformation called complex conjugation, the equation will describe a 'smeared' electron localizing back into a small region of space over the same time period." Although this phenomenon is not observed in nature, it could theoretically happen due to a random fluctuation in the cosmic microwave background permeating the universe. The team set out to calculate the probability to observe an electron "smeared out" over a fraction of a second spontaneously localizing into its recent past. It turned out that even across the entire lifetime of the universe -- 13.7 billion years -- observing 10 billion freshly localized electrons every second, the reverse evolution of the particle's state would only happen once. And even then, the electron would travel no more than a mere one ten-billionth of a second into the past. The researchers then attempted to reverse time in a four-stage experiment by observing the state of a quantum computer made of superconducting qubits, instead of an electron. The researchers "found that in 85 percent of the cases, the two-qubit quantum computer returned back into the initial state," reports Phys.Org. "When three qubits were involved, more errors happened, resulting in a roughly 50 percent success rate. According to the authors, these errors are due to imperfections in the actual quantum computer. As more sophisticated devices are designed, the error rate is expected to drop."

Joe_NoOne (Slashdot reader #48,818) shares this update from Nature: The DNA of life on Earth naturally stores its information in just four key chemicals -- guanine, cytosine, adenine and thymine, commonly referred to as G, C, A and T, respectively. Now scientists have doubled this number of life's building blocks, creating for the first time a synthetic, eight-letter genetic language that seems to store and transcribe information just like natural DNA.

In a study published on 22 February in Science, a consortium of researchers led by Steven Benner, founder of the Foundation for Applied Molecular Evolution in Alachua, Florida, suggests that an expanded genetic alphabet could, in theory, also support life. "It's a real landmark," says Floyd Romesberg, a chemical biologist at the Scripps Research Institute in La Jolla, California. The study implies that there is nothing particularly "magic" or special about those four chemicals that evolved on Earth, says Romesberg. "That's a conceptual breakthrough," he adds... Benner says that the work shows that life could potentially be supported by DNA bases with different structures from the four that we know, which could be relevant in the search for signatures of life elsewhere in the Universe...

The researchers call the resulting eight-letter language 'hachimoji' after the Japanese words for 'eight' and 'letter'. The additional bases are each similar in shape to one of the natural four, but have variations in their bonding patterns. The researchers then conducted a series of experiments that showed that their synthetic sequences shares properties with natural DNA that are essential for supporting life... Benner's group previously showed that strands of DNA that included Z and P were better at binding to cancer cells than sequences with just the standard four bases. And Benner has set up a company which commercialises synthetic DNA for use in medical diagnostics.

The Economist tells the story of how French chemist Antoine-Laurent de Lavoisier came to publish the first putatively comprehensive list of chemical elements -- substances incapable of being broken down by chemical reactions into other substances -- known today as the periodic table. It was Lavoisier and his wife Marie-Anne who pioneered the technique of measuring quantitatively what went into and came out of a chemical reaction, as a way of getting to the heart of what such a reaction really is. "Where the story of the periodic table of the elements really starts is debatable," reports The Economist, "but Lavoisier's laboratory is as good a place as any to begin..." Here's an excerpt from the report: Lavoisier's list of elements, published in 1789, five years before his execution, had 33 entries. Of those, 23 -- a fifth of the total now recognized -- have stood the test of time. Some, like gold, iron and sulphur, had been known since ancient days. Others, like manganese, molybdenum and tungsten, were recent discoveries. What the list did not have was a structure. It was, avant la lettre, a stamp collection. But the album was missing.

Creating that album, filling it and understanding why it is the way it is took a century and a half. It is now, though, a familiar feature of every high-school science laboratory. Its rows and columns of rectangles, each containing a one- or two-letter abbreviation of the name of an element, together with its sequential atomic number, represent an order and underlying structure to the universe that would have astonished Lavoisier. It is little exaggeration to say that almost everything in modern science is connected, usually at only one or two removes, to the periodic table.

An anonymous reader shares a report: The fake Rotten Tomatoes review onslaught continues for Captain Marvel, giving the film the lowest-rating of all Marvel Cinematic Universe movies on the site nearly two weeks ahead of its release. As of this writing, Captain Marvel now has a 28% Audience Rating, a whopping 18 points below the next lowest MCU flick -- 2008's The Incredible Hulk. Starting earlier this week, a certain section of the internet -- for whatever reason -- decided to start filing fake negative reviews in an attempt to purposefully lower the film's Audience Rating.

Earlier this week, the FCC proclaimed that broadband connectivity saw unprecedented growth last year thanks to the agency's policies like killing net neutrality. But, as Motherboard points out, that's not entirely true. The lion's share of improvements highlighted by the agency "are courtesy of DOCSIS 3.1 cable upgrades, most of which began before Pai even took office and have nothing to do with FCC policy," the report says. "Others are likely courtesy of build-out conditions affixed to AT&T's merger with DirecTV, again the result of policies enacted before Pai was appointed head of the current FCC." Also, last year's FCC report, which showcased data up to late 2016, "showed equal and in some instances faster growth in rural broadband deployment -- despite Pai having not been appointed yet." From the report: The broadband industry's biggest issue remains a lack of competition. That lack of competition results in Americans paying some of the highest prices for broadband in the developed world, something the agency routinely fails to mention and does so again here. [...] Still, Pai was quick to take a victory lap in the agency release. "For the past two years, closing the digital divide has been the FCC's top priority," Pai said in a press release. "We've been tackling this problem by removing barriers to infrastructure investment, promoting competition, and providing efficient, effective support for rural broadband expansion through our Connect America Fund. This report shows that our approach is working." One of those supposed "barriers to broadband investment" were the former FCC's net neutrality rules designed to keep natural monopolies like Comcast from behaving anti-competitively.

"Overall, capital expenditures by broadband providers increased in 2017, reversing declines that occurred in both 2015 and 2016," the FCC claimed, again hinting that the repeal of net neutrality directly impacted CAPEX and broadband investment. A problem with that claim: the FCC's latest report only includes data up to June 2018, the same month net neutrality was formally repealed. As such the data couldn't possibly support the idea that the elimination of net neutrality was responsible for this otherwise modest growth. Another problem: that claim isn't supported by ISP earnings reports or the public statements of numerous telecom CEOs, who say net neutrality didn't meaningfully impact their investment decisions one way or another. Telecom experts tell Motherboard that's largely because such decisions are driven by a universe of other factors, including the level of competition (or lack thereof) in many markets.

NASA announced this week that it will create the Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer: SPHEREx for short. It'll look at how our universe has changed, and how common the ingredients of life are in the Milky Way. From a report: The space agency is aiming for a 2023 launch and has already earmarked $242 million for the project, not including launch costs, which is supposed to last for at least two years. Once SPHEREx is already in orbit, it will observe and collect data on over 300 million galaxies, some as far as 10 billion light-years away from Earth, and 100 million stars in our own Milky Way every six months. It will use technologies adapted from Earth satellites and Mars spacecraft to survey the sky in optical and near-infrared light. Since it will use 96 wavelengths in all, it will give NASA a way to create an extremely detailed sky map with a resolution that's much, much higher than previous ones.

An anonymous reader quotes MovieWeb: The official Captain Marvel website is a blast from the past... Marvel Studios is preparing its final promotional push for the project. This includes TV spots, various forms of merchandise, posters, and in this case, a perfect retro website, tailor made to take us all back to a time when the internet was a whole lot simpler.

Instead of flashy high resolution images, we are treated to pixelated versions, which perfectly reimagines the 1990s websites. There's a lot of Word art, a ticker to count how many unique views that the site gets, a guest book, and even a game that lets fans spot the Kree. Instead of the trailers coming through YouTube, they are played using the "Kree Player," which is take on the old Real Player.
MovieWeb writes that the site "also gives younger Marvel Cinematic Universe fans a chance to see what the internet looked like back in the day...."

And though the movie's slogan is "Higher, further, faster," they argue that "The only thing that could have made the Captain Marvel site even better is slow page loading, just to give it a real touch of what it was like surfing the net in the dark ages."

An anonymous reader quotes a report from The Guardian: A group of volunteers who took a trip in the name of science have helped researchers uncover how LSD messes with activity in the brain to induce an altered state of consciousness. Brain scans of individuals high on the drug revealed that the chemical allows parts of the cortex to become flooded with signals that are normally filtered out to prevent information overload. The drug allowed more information to flow from the thalamus, a kind of neural gatekeeper, to a region called the posterior cingulate cortex, and it stemmed the flow of information to another part known as the temporal cortex. This disruption in communication may underpin some of the wacky effects reported by LSD users, from feelings of bliss and being at one with the universe to hallucinations and what scientists in the field refer to as "ego dissolution," where one's sense of self disintegrates.

For the study, the researchers invited 25 healthy participants into the lab to be scanned under the influence of LSD and, on another occasion, after taking a placebo. They were shown around the scanner beforehand to ensure they felt comfortable going inside when the drug took hold. Had the machine suddenly taken on a threatening demeanor, the scans might not have come out so well. The scientists wanted to test a hypothesis first put forward more than a decade ago. It states LSD causes the thalamus to stop filtering information it relays to other parts of the brain. It is the breakdown of this filter that gives rise to the weird effects the drug induces, or so the thinking goes. Scans of the volunteers' brains suggested there may be some truth to the hypothesis. On LSD, the thalamus let more information through to some parts of the brain and suppressed information bound for others. "What we found is that the model is mostly true, but how information is distributed to the cortex under LSD is much more specific than it predicts," a researcher said. The latest research is published in Proceedings of the National Academy of Sciences.

An anonymous reader quotes a report from ZDNet: A Microsoft program manager has caused a stir on Twitter over the weekend by suggesting that Firefox-maker Mozilla should give up on its own rendering engine and move on with Chromium. "Thought: It's time for @mozilla to get down from their philosophical ivory tower. The web is dominated by Chromium, if they really 'cared' about the web, they would be contributing instead of building a parallel universe that's used by less than five percent?" wrote Kenneth Auchenberg, who builds web developer tools for Microsoft's Visual Studio Code.

Auchenberg's post referred to Mozilla's response to Microsoft's announcement in December that it would scrap Edge's EdgeHTML rendering engine for Chromium's. The move will leave Firefox's Gecko engine as the only alternative to Chromium, which is used by Opera and dozens of other browsers. Few people agreed with Auchenberg, including engineers from both Mozilla and Chromium. Long-serving Mozillian Asa Dotzler was not impressed. "Just because your employer gave up on its own people and technology doesn't mean that others should follow," Dotzler replied to Auchenberg. Auchenberg clarified that he didn't want to see Mozilla vanish, but said it should reorganize into a research institution "instead of trying to to justify themselves with the 'protectors of the web' narrative."

On October 19, 2017, astronomers at the University of Hawaii spotted a strange object travelling through our solar system, which they later described as "a red and extremely elongated asteroid." It was the first interstellar object to be detected within our solar system; the scientists named it 'Oumuamua, the Hawaiian word for a scout or messenger. The following October, Avi Loeb, the chair of Harvard's astronomy department, co-wrote a paper (with a Harvard postdoctoral fellow, Shmuel Bialy) that examined 'Oumuamua's "peculiar acceleration" and suggested that the object "may be a fully operational probe sent intentionally to Earth's vicinity by an alien civilization." Loeb has long been interested in the search for extraterrestrial life, and he recently made further headlines by suggesting that we might communicate with the civilization that sent the probe.

Isaac Chotiner of The New Yorker has interviewed Loeb, who was frustrated that scientists saw 'Oumuamua too late in its journey to photograph the object. "My motivation for writing the paper is to alert the community to pay a lot more attention to the next visitor," he told Chotiner. An excerpt from the interview: The New Yorker: Your explanation of why 'Oumuamua might be an interstellar probe may be hard for laypeople to understand. Why might this be the case, beyond the fact that lots of things are possible?
Loeb: There is a Scientific American article I wrote where I summarized six strange facts about 'Oumuamua. The first one is that we didn't expect this object to exist in the first place. We see the solar system and we can calculate at what rate it ejected rocks during its history. And if we assume all planetary systems around other stars are doing the same thing, we can figure out what the population of interstellar objects should be. That calculation results in a lot of possibilities, but the range is much less than needed to explain the discovery of 'Oumuamua.
There is another peculiar fact about this object. When you look at all the stars in the vicinity of the sun, they move relative to the sun, the sun moves relative to them, but only one in five hundred stars in that frame is moving as slow as 'Oumuamua. You would expect that most rocks would move roughly at the speed of the star they came from. If this object came from another star, that star would have to be very special.

[...]The New Yorker: Hold on. "'Not where is the lack of evidence so that I can fit in any hypothesis that I like?' " [Bailer-Jones, of the Max Planck Institute for Astronomy, in Heidelberg, Germany, has identified four possible home stars for 'Oumuamua, and was asked to respond to Loeb's light-sail theory by NBC.]
Loeb: Well, it's exactly the approach that I took. I approached this with a scientific mind, like I approach any other problem in astronomy or science that I work on. The point is that we follow the evidence, and the evidence in this particular case is that there are six peculiar facts. And one of these facts is that it deviated from an orbit shaped by gravity while not showing any of the telltale signs of cometary outgassing activity. So we don't see the gas around it, we don't see the cometary tail. It has an extreme shape that we have never seen before in either asteroids or comets. We know that we couldn't detect any heat from it and that it's much more shiny, by a factor of ten, than a typical asteroid or comet. All of these are facts. I am following the facts.

Last year, I wrote a paper about cosmology where there was an unusual result, which showed that perhaps the gas in the universe was much colder than we expected. And so we postulated that maybe dark matter has some property that makes the gas cooler. And nobody cares, nobody is worried about it, no one says it is not science. Everyone says that is mainstream -- to consider dark matter, a substance we have never seen. That's completely fine. It doesn't bother anyone. But when you mention the possibility that there could be equipment out there that is coming from another civilization -- which, to my mind, is much less speculative, because we have already sent things into space -- then that is regarded as unscientific. But we didn't just invent this thing out of thin air. The reason we were driven to put in that sentence was because of the evidence, because of the facts. If someone else has a better explanation, they should write a paper about it rather than just saying what you said.

dryriver writes: Electronic Arts has mismanaged the Battlefield franchise in the past -- BF3 and BF4 were not great from a gameplay perspective -- but with Battlefield 5, Electronic Arts is facing a real disaster that has sent its stock plummeting on the stock exchanges. First came the fierce cultural internet backlash from gamers to the Battlefield 5 reveal trailer -- EA tried to inject so much 21st Century gender diversity and Hollywood action-movie style fighting into what was supposed to be a reasonably historically accurate WWII shooter trailer, that many gamers felt the game would be "a seriously inauthentic portrayal of what WW2 warfare really was like." Then the game sold very poorly after a delayed launch date -- far less than the mildly successful WW1 shooter Battlefield 1 for example -- and is currently discounted by 33% to 50% at all major game retailers to try desperately to push sales numbers up. This was also a disaster for Nvidia, as Battlefield 5 was the tentpole title supposed to entice gamers into buying expensive new realtime ray-tracing Nvidia 2080 RTX GPUs.

Electronic Arts had to revise its earnings estimates for 2019, some hedge funds sold off their EA stock, fearing low sales and stiff competition from popular Battle Royal games like Fortnite and PUBG, and EA stock is currently 45% down from its peak value in July 2018. EA had already become seriously unpopular with gamers because of annoying Battlefield franchise in-game mechanisms such as heaving to buy decent-aiming-accuracy weapons with additional cash, having to constantly pay for additional DLC content and game maps, and the very poor multiplayer gameplay of its two Star Wars: Battlefront titles (essentially Battlefield with laser blasters set in the Star Wars Universe). It seems that with Battlefield 5, EA -- not a company known for listening to its customers -- finally hit a brick wall, in the form of many Battlefield fans simply not buying or playing Battlefield 5.

Astronomers have detected 13 high-speed bursts of radio waves coming from deep space -- including one that regularly repeats. While the exact sources remain unknown, the new bevy of mysterious blasts does offer fresh clues to where and why such flashes appear across the cosmos. From a report: Fast radio bursts, as they are known to scientists, are among the universe's most bizarre phenomena. Each burst lasts just thousandths of a second, and they all appear to be coming from far outside our home galaxy, the Milky Way. Since these bursts were discovered in 2007, their cause has remained a puzzle. Based on estimations of the known range of their frequencies and an understanding of activity in the universe, scientists expect that nearly a thousand of them happen every day. But to date, only a handful have been found.

Now, a team using the Canadian Hydrogen Intensity Mapping Experiment, or CHIME, has announced the additional 13 new detections, including an especially rare repeating burst. Until now, only one other repeating fast radio burst was known to exist. "The repeater," as it being called, and its 12 counterparts came from a region of space some 1.5 billion light-years away, the team reports today in the journal Nature. All 13 new bursts have the lowest radio frequency yet detected, but they were also brighter than previously seen fast radio bursts, leading the team to think the low frequency has something to do with the sources' environment.

Russell Lewis, writing for NPR: When Nancy Grace Roman was a child, her favorite object to draw was the moon. Her mother used to take her on walks under the nighttime sky and show her constellations, or point out the colorful swirls of the aurora. Roman loved to look up at the stars and imagine. Eventually, her passion for stargazing blossomed into a career as a renowned astronomer. Roman was one of the first female executives at NASA, where she served as the agency's first chief of astronomy. Known as the "Mother of Hubble," for her role in making the Hubble Space Telescope a reality, Roman worked at NASA for nearly two decades. She died on Dec. 25 at the age of 93.

Roman fought to earn her place in a field dominated by men, paving the path for future female scientists. She was born in Nashville, Tenn. in 1925 and organized an astronomy club in fifth grade. She attended high school in Baltimore, where she requested to take a second year of algebra instead of a fifth year of Latin. When she made the appeal, she recounted in a 2017 interview with NPR that the guidance counselor wasn't supportive of her dream to become a scientist.

Her efforts helped lead to the creation of the Hubble Space Telescope. In her role at NASA, Roman developed and planned the Hubble Space Telescope, which is famous for its stunning images of space. Because of the Hubble Space Telescope, scientists have been able to collect data and gain insight into even the most remote galaxies of the universe. The success of the project led to future space telescopes. Roman's work, however, reached far beyond just the Hubble Space Telescope. In an interview with NASA, Roman once stated that one of the highlights of her career was when she discovered the first indication that common stars were not all the same age.

No one told them to look for the Earth. It was Christmas Eve 1968 and the first manned mission to the moon had reached its destination. As Apollo 8 slipped into lunar orbit the crew prepared to read passages of Genesis for a TV broadcast to the world. But as the command module came around on its fourth lap, there it was visible through the window -- a bright blue and white bauble suspended in the black above the relentless grey of the moon. The Guardian: Before that moment 50 years ago, no one had seen an earthrise. The sight sent Bill Anders, the mission photographer, scrambling for his camera. He slapped a 70mm colour roll into the Hasselblad, set the focus to infinity, and started shooting though the telephoto lens. What he captured became one of the most influential images in history. A driving force of the environmental movement, the picture, which became known as Earthrise, showed the world as a singular, fragile, oasis.

On previous laps Anders had snapped the far side of the moon for the geologists and the near side of it for Apollo's landing site planners. "It didn't take long for the moon to become boring. It was like dirty beach sand," Anders told the Guardian. "Then we suddenly saw this object called Earth. It was the only colour in the universe." Apollo 8 launched from the Kennedy Space Centre in Florida on 21 December 1968. The enormous Saturn V rocket, more than 110 metres tall, had flown only twice before and never with a crew. But on that day the rocket performed. Tucked inside the command module, Anders, Frank Borman and James Lovell looped the planet twice before the third stage blasted them onwards to the moon. They arrived nearly three days later, completed 10 lunar orbits, and headed home for a splashdown in the north Pacific.

Earthrise did not have an immediate impact. Its philosophical significance sunk in over years, after Nasa put it on a stamp, and Time and Life magazine highlighted it as an era-defining image. "It gained this iconic status," Anders said. "People realised that we lived on this fragile planet and that we needed to take care of it." The shot did more than boost the environmental movement. Even Anders, who calls himself "an arch cold war warrior," felt it held a message for humanity. "This is the only home we have and yet we're busy shooting at each other, threatening nuclear war, and wearing suicide vests," he said. "It amazes me." Further reading: Wired.

An anonymous reader shares a report: One day this fall, Ashutosh Garg, the chief executive of a recruiting service called Eightfold.ai, turned up a resume that piqued his interest. It belonged to a prospective data scientist, someone who unearths patterns in data to help businesses make decisions, like how to target ads. But curiously, the resume featured the term "data science" nowhere.

Instead, the resume belonged to an analyst at Barclays who had done graduate work in physics at the University of California, Los Angeles. Though his profile on the social network LinkedIn indicated that he had never worked as a data scientist, Eightfold's software flagged him as a good fit. He was similar in certain key ways, like his math and computer chops, to four actual data scientists whom Mr. Garg had instructed the software to consider as a model.

The idea is not to focus on job titles, but "what skills they have," Mr. Garg said. "You're really looking for people who have not done it, but can do it." The power of such technology will be immediately apparent to any employer scrambling to fill jobs in a tight labor market -- not least positions for data scientists, whom companies like Google, Facebook and Amazon are competing to attract. Thanks to services like Eightfold, which rely on sophisticated algorithms to match workers and jobs, many employers may soon have access to a universe of prospective workers -- even for hard-to-fill roles -- whom they might not otherwise have come across.

One of the most galling mysteries in physics is that of the dark matter and dark energy. Scientists believe that together, these could account for up to 95 percent of the total mass in the universe. Now, a researcher at the University of Oxford says a new theory could explain all that "dark phenomena." From a report: The two mysterious dark substances can only be inferred from gravitational effects. Dark matter may be an invisible material, but it exerts a gravitational force on surrounding matter that we can measure. Dark energy is a repulsive force that makes the universe expand at an accelerating rate. The two have always been treated as separate phenomena. But my new study, published in Astronomy and Astrophysics, suggests they may both be part of the same strange concept -- a single, unified "dark fluid" of negative masses.

Negative masses are a hypothetical form of matter that would have a type of negative gravity -- repelling all other material around them. Unlike familiar positive mass matter, if a negative mass was pushed, it would accelerate towards you rather than away from you. Negative masses are not a new idea in cosmology. Just like normal matter, negative mass particles would become more spread out as the universe expands -- meaning that their repulsive force would become weaker over time. However, studies have shown that the force driving the accelerating expansion of the universe is relentlessly constant. This inconsistency has previously led researchers to abandon this idea. If a dark fluid exists, it should not thin out over time.

In the new study, I propose a modification to Einstein's theory of general relativity to allow negative masses to not only exist, but to be created continuously. "Matter creation" was already included in an early alternative theory to the Big Bang, known as the Steady State model. The main assumption was that (positive mass) matter was continuously created to replenish material as the universe expands. We now know from observational evidence that this is incorrect. However, that doesn't mean that negative mass matter can't be continuously created. I show that this assumed dark fluid is never spread too thinly. Instead it behaves exactly like dark energy.

Chris Reeve writes: Wired Magazine is reporting that astronomers have since 2014 witnessed up to 100 possible instances of quasars transforming into galaxies over very short timespans, but the article leaves no hint of the trouble this spells for the Big Bang cosmology. The article begins, "Stephanie Lamassa did a double take. She was staring at two images on her computer screen, both of the same object — except they looked nothing alike... The quasar seemed to have vanished, leaving just another galaxy. That had to be impossible, she thought. Although quasars turn off, transitioning into mere galaxies, the process should take 10,000 years or more. This quasar appeared to have shut down in less than 10 years — a cosmic eyeblink."

What the Wired article fails to mention is that the short timespans vindicate the quasar ejection model proposed by Edwin Hubble's assistant, Halton Arp, who insisted that these objects must be considerably closer than the extreme distances inferred by their redshifts:

"The conclusion was very, very strong just from looking at this picture that these objects had been ejected from the central galaxy, and that they were initially at high redshift, and the redshift decayed as time went on. And therefore, we were looking at a physics that was operating in the universe in which matter was born with low mass and very high redshift, and it matured and evolved into our present form, that we were seeing the birth and evolution of galaxies in the universe."

Arp's attempts to publish his quasar ejection model famously led to his removal from the world's largest optical telescope at that time — the 200-inch Palomar. He decided to resign from his permanent position at the Carnegie Institute of Washington on the principle of "whether scientists could follow new lines of investigation, and follow up... on evidence which apparently contradicted the current theorems and the current paradigms." The fact that these quasar changes appear to occur over just months in some cases should raise questions about whether or not the objects are truly at the vast distances and scales implied by their redshift-inferred distances.
The original submission also included a comment with a carefully-documented "list of vindications for Halton Arp" -- and complains again that Wired failed to include any mention of Arp's theory, and it's "dire" implications for the Big Bang theory's assumptions about redshift.

Astronomers have measured all the light from all the stars that have ever existed. "In total, the astronomers estimate, stars have radiated 4x1084 photons (a photon being the smallest unit of light)," reports The Guardian. "Or put another way: 4,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 photons." From the report: The astronomers based their calculation on measurements of the extragalactic background light (EBL), a cosmic fog of radiation that has been accumulating since stars first illuminated the dark, vast expanse of space. More than 90% of starlight ends up surviving in this dim backdrop of radiation. The latest observations, collected over nine years by Nasa's Fermi space telescope, use the light from blazars -- super-massive black holes that emit powerful jets of gamma rays -- as beacons to illuminate the cosmic fog.

In total, the team captured signals from 739 blazars -- some relatively close and some extremely distant, whose light was emitted in the ancient universe and has taken billions of years to arrive at Earth. Gamma-ray photons travelling through a fog of starlight have a high chance of being absorbed. So by taking blazars at different distances from the Earth and working out how much of their radiation had been lost along the way, the total starlight at different time periods could be ascertained. The researchers used a computer model to factor in the cosmic fog, which "is simultaneously being diluted as the universe expands and space itself is stretched out," the report mentions. "The measurements suggest that star formation peaked about 11 billion years ago and has been on the wane ever since. About seven new stars are created in our Milky Way galaxy every year."

dmoberhaus writes: Researchers at the National Institute for Standards and Technology (NIST) have developed an atomic clock that is so precise that our models of Earth's gravity aren't accurate enough to keep up with it. As detailed in a paper published this week in Nature, the atomic clock could pave the way for creating an unprecedented map of the way the Earth's gravity distorts spacetime and even shed light on the development of the early universe. "The level of clock performance being reported is such that we don't actually know how to account for it well enough to support the level of performance the clock achieves," Andrew Ludlow, a physicist at NIST and the project lead on the organization's new atomic clock, told me on the phone. "Right now the state of the art techniques aren't quite good enough so we're limited by how well we understand gravity on different parts of the Earth."

Ryan Holmes, writing on Medium: Back in March of last year, Conde Nast Traveler did something a little unusual in the social media universe. They played hard to get. Instead of courting new followers with clickbait and promo codes, the company required that interested people apply to get into their closed Facebook Group, focused on female travelers. To be considered for membership, applicants had to explain why the Group was important to them, and show an understanding of the community guidelines. Today, the Women Who Travel Facebook Group counts more than 50,000 members. And it boasts a level of activity many brands could only dream of -- three-quarters of users are active on a daily basis. The initiative has been so successful, in fact, that Conde Nast has since extended Facebook Groups across eight of its brands, including The New Yorker, Vanity Fair, Allure, BRIDES, Golf Digest, SELF and Teen Vogue.

The Facebook Group is nothing new. Spaces for like-minded people to congregate and discuss specific subjects -- from hobbies to pets and celebrities -- date in one form or another to the platform's earliest days. These Groups have long been segmented into three classes: open (or general admission), closed (requiring admin approval for new members) and secret (invisible to outside search and accessible only with a direct link). But for a combination of technical and cultural reasons, Groups are suddenly having their moment. (Apart from Facebook, LinkedIn revamped its own Groups offering this fall for its 500-plus million users, adding the ability to share pics and videos, as well as receive comment notifications.) In the past year alone, Facebook Group membership is up 40 percent, with 1.4 billion people -- more than half of Facebook's massive user base -- now using Groups every month. Of those, 200 million people belong to so-called "meaningful Groups," considered a vital part of users' daily lives.