PARIS LA DÉFENSE--(BUSINESS WIRE)--Jul 19, 2023--

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Mysterious blasts coming from deep in space could be the result of “starquakes”, according to a new study. For years, scientists have been observing fast radio bursts, or FRBs, coming from distant parts of space. They are very intense, very short blasts of energy – and despite finding many of them, researchers still do not know where they are coming from or how they might be formed. Now, scientists have spotted that there is appears to be similarities between those FRBs and earthquakes. Researchers behind the new study suggest that the blasts could be the result of similar behaviour on neutron stars, known as starquakes. It is just one possible explanation for the unusual bursts, which have led to suggestions they could be anything from neutron stars colliding with black holes to alien technology. Most have settled on the belief that at least some of those FRBs come from neutron stars, however, which are formed when supergiant stars collapse into an incredibly dense, small object. In the new study, researchers looked at data from nearly 7,000 bursts, taken from three different sources that are sending out repeated FRBs, examining the time and energy that they emerged in. They then also looked at earthquake information taken from Japan, and data on solar flares, and looked to compare the three. There was little connection between FRBs and solar flares, the researchers found. But there was a striking similarity between the blasts and earthquakes. “The results show notable similarities between FRBs and earthquakes in the following ways: First, the probability of an aftershock occurring for a single event is 10-50%; second, the aftershock occurrence rate decreases with time, as a power of time; third, the aftershock rate is always constant even if the FRB-earthquake activity (mean rate) changes significantly; and fourth, there is no correlation between the energies of the main shock and its aftershock,” said Tomonori Totani from the University of Tokyo, one of the leaders of the study. The findings have led scientists to speculate that there is a solid crust on the outer surface of neutron stars. That crust then experiences starquakes in the same way the Earth’s surface does – and those quakes then let out powerful blasts of energy that make their way to us as FRBs. But researchers say they will need to further examine those FRBs to better understand the connection between the two – as well as to help give us information about quakes and other physical phenomena that are closer to home. “By studying starquakes on distant ultradense stars, which are completely different environments from Earth, we may gain new insights into earthquakes,” said Professor Totani. “The interior of a neutron star is the densest place in the universe, comparable to that of the interior of an atomic nucleus. “Starquakes in neutron stars have opened up the possibility of gaining new insights into very high-density matter and the fundamental laws of nuclear physics.” The research is described in a new paper, ‘Fast radio bursts trigger aftershocks resembling earthquakes, but not solar flares’, published in the journal Monthly Notices of the Royal Astronomical Society.

With Saw back in the limelight with Saw X, there are two video games players can dive into if they never have. Here's where players can buy the game and if they are canon to the franchise as a whole.

TROY, Mich.--(BUSINESS WIRE)--Aug 3, 2023--

Shares of PayPal Holdings fell nearly 9% in premarket trading on Thursday after the digital payments firm reported

Elon Musk formally renamed Twitter “X” in July, cementing the rebrand by bolting the symbol to the top of the social network’s San Francisco headquarters and replacing Larry the Bird, its mascot since 2012, with a grungy black logo soon afterwards. Linda Yaccarino, X’s new CEO, declared at the time of the rebrand: “X is the future state of unlimited interactivity – centered in audio, video, messaging, payments/banking – creating a global marketplace for ideas, goods, services, and opportunities. Powered by AI, X will connect us all in ways we’re just beginning to imagine.” Mr Musk had already renamed the company itself X Corp in March, six months after acquiring it for $44m, a purchase he described at the time as “an accelerant to creating X, the everything app”, his vision for a multipurpose competitor to China’s WeChat. The decision was just the latest example of the entrepreneur’s preoccupation with the 24th letter of the alphabet: his first business venture was X.com, he shortened the name of Space Exploration Technologies Corp to SpaceX, he launched the Tesla Model X and has a new artificial intelligence startup named xAI. He even calls his son X Æ A-12 just X for short. So what is the obsession about and where did it begin? His first venture, X.com, was an online banking and financial services platform launched in Palo Alto, California, in 1999 that would ultimately be merged with Confinity to become PayPal, which was in turn then sold to eBay for $1.5bn in 2002, Mr Musk using some of the capital he earned as its largest shareholder to found SpaceX. Julie Anderson Ankenbrandt, a former PayPal executive, explained how Mr Musk’s platform got its name in a Quora post in 2016. “Elon, the other founders of the company that was X.com… and I sat around a backroom table at a long-defunct bar called the Blue Chalk in Palo Alto, trying decide what the name of the company should be… and the question at hand was whether to be Q, X or Z dot com,” she wrote. “Finally, when the waitress/female server brought the next round of drinks Elon asked her what she thought, and she said she like[d] X.com. Elon pounded the table and said ‘That’s it then!’ and everyone laughed, but in the end that was pretty much how it was decided.” Not everyone was happy with the decision, according to Mr Musk’s biographer Ashlee Vance, who told NPR: “Everyone tried to talk him out of naming the company that back then because of the sexual innuendos, but he really liked it and stuck with it.” He liked the name so much he bought the X.com domain back from PayPal in 2017 and thanked the company in a tweet, explaining that it had “great sentimental value” to him. The domain now redirects to the social network that has since taken on its old moniker. Elsewhere, the Tesla Model X – a midsize luxury crossover SUV with falcon wing doors – was named so that, with three other models, the range would spell out “S3XY”, giving you an insight into Mr Musk’s gawky sense of humour. As for his son, the boy’s mother Grimes explained in a tweet of her own that the symbol is used in algebra to denote any unknown variable, perhaps suggesting the child is free to grow up to be whatever they choose to be. The rebranding of Twitter to X sparked a great deal of musing about the letter’s possible significance (or lack thereof), with Lora Kelly of The Atlantic writing: “The letter is associated with such varied contexts as Christian symbolism, middle-school-math equations, gender neutrality, pornography, a kiss.” In Psychology Today, Leon F Selzer discussed its “nihilistic” values, noting that it has associations with everything from the Nazi swastika to a skull-and-crossbones danger warning on a bottle of poison to Roman numerals, voting and Christmas (at least when abbreviated to “Xmas”) and therefore can mean everything and nothing. Meanwhile, in The New York Times, Stella Bugbee suggested the choice was arguably a bit dated and perhaps represented a case of Mr Musk showing his age as a member of, appropriately enough, Generation X. “For marketing purposes in the 1990s, X had a certain cool,” she explained. “It conferred a rejection of authority.” While that observations rings true of such turn-of-the-millennium cultural detritus as, say, the arrival of Microsoft’s XBox in 2001 or Vin Diesel’s action film XXX (2002), it has also been used in the same way before and since: think of country star Loretta Lynn’s notoriety-courting 1972 single “Rated X” or the cult 1980s Los Angeles punk band X, for instance, or the more recent Ti West horror film X (2022). As Lora Kelly observed: “X both reinforces absence and electrifies objects with meaning. It is sacred and profane.” Read More Elon Musk ‘borrowed $1bn from SpaceX’ at same time as Twitter acquisition SpaceX abandons YouTube for live streams of launches in favour of X/Twitter Elon Musk threatens to sue the Anti-Defamation League over lost revenue on X Elon Musk ‘borrowed $1bn from SpaceX’ at same time as Twitter acquisition Starship ‘ready to launch’, Elon Musk says Elon Musk vows to sue ADL for calling him antisemitic over X campaign

WESTBOROUGH, Mass.--(BUSINESS WIRE)--Jul 27, 2023--

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