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A class action lawsuit was filed against Roblox this week alleging that the gaming platform

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Scientists have worked out how close a neutron star collision would have to be to threaten all life on Earth, in a not-remotely-terrifying new study. The event, known as a kilonova, is among the most powerful and explosive in the known universe. It’s not quite as bright as a supernova – but we should still keep our distance. Haille Perkins, team leader and a scientist at the University of Illinois Urbana-Champaign, told Space.com: “We found that if a neutron star merger were to occur within around 36 light-years of Earth, the resulting radiation could cause an extinction-level event.” That’s about 212 trillion miles – which seems like quite a large danger zone. But we need not worry, apparently. Kilonovae are extremely rare and difficult to spot, because they happen so quickly. Scientists, including those from the University of Warwick, recently managed to observe one by using the James Webb telescope. The explosion first produces a blast of gamma rays which lasts for just seconds. If we got caught in one of those, it would fry us all rather quickly. That’s pretty unlikely because they go in two thin lines out from the centre of the blast. They also cause an afterglow of X-ray emissions in the surrounding dust and particles. If we’re within 16.3 light years of those, we’d be in trouble. But the worst bit is the cosmic rays (of course!) – energetic charged particles spreading out from the explosion in a bubble. If these hit Earth, they would strip the ozone layer and leave us vulnerable to ultraviolet rays for several thousand years. That would be a bummer because, again, we’d all die. Fortunately, kilonovae are so rare that we’re more likely to get hit by an asteroid, added Perkins. She said: “There are several other more common events like solar flares, asteroid impacts, and supernova explosions that have a better chance of being harmful.” That’s good then. New kilonova discoveries In the most recent kilonova, it was the gamma rays that alerted the astronomers to the fact something big was going down. Then, they got in touch with various telescopes and detectors to ask them to focus on the bit of the sky where the burst had come from, and bingo: kilonova. Here's what it looked like on the JWT's feed. One of the major discoveries from this one is that kilonovae produce an element called tellurium, a relatively rare element on Earth. They also worked out where the two neutron stars came from: a spiral galaxy about 120,000 light years away from the location of the final explosion. That’s about the diameter of the Milky Way, and just a little further away than the mere 36 light year danger zone, then. But it’s food for thought nonetheless, eh? How to join the indy100's free WhatsApp channel Sign up to our free indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

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Meta’s Twitter rival Threads appears to be struggling to hold on to users as its daily active user count is down by about four-fifth since its launch – just days after it broke records as the fastest-growing app ever. Within a few days of its launch, Instagram’s threads reached 100 million users, making it the most rapidly growing app ever developed. In comparison, OpenAI’s ChatGPT, which was the previous fastest-growing app, took two months to reach 100 million users. Growing at such a rapid rate, Threads easily became the leading competitor of X (formerly Twitter) with about three times as many users as all other rivals combined within hours of launching. But new data assessed by market research firm Sensor Tower suggests Threads is facing challenges in retaining its user base. The firm’s analysis points out that the daily active user count of Threads is down by 82 per cent since the app’s launch as of 31 July, CNN reported. Fewer users are opening the app and doing so less frequently, apart from spending less time there, according to Sensor Tower. Citing the market research firm, CNN said users spent barely three minutes per day on Threads, compared to nearly 20 minutes during its initial launch. Analysis by another firm Similarweb also pointed out that Threads is struggling to retain its users. While the app’s usage peaked on 7 July – immediately after its launch – with over 49 million daily active users on Android alone, this number had fallen to 12.6 million by 23 July, according to a blog post by Similarweb. At its peak, Threads reportedly had over a third of X’s audience on that platform, but by 23 July, this had dropped to about 12 per cent of the users on the Elon Musk-owned platform. Sensor Tower noted that Threads’ daily active user count is still falling at about 1 per cent each day. “Threads took off like a rocket, with its close linkage to Instagram as the booster. However, the developers of Threads will need to fill in missing features and add some new and unique ones if they want to make checking the app a daily habit for users,” Similarweb noted in its blog post. Despite falling numbers, Meta chief Mark Zuckerberg is “quite optimistic” about the app, intending now to focus on “retention and improving the basics”, according to CNN. “And then after that, we’ll focus on growing the community to the scale we think is possible,” Mr Zuckerberg said. Read More Meta is secretly building an AI chatbot with the personality of Abraham Lincoln Are you a Facebook user? Here’s how to claim your share of $725m settlement in privacy lawsuit Elon Musk red-faced as police halt Twitter sign removal leaving company called ‘ER’ Mark Zuckerberg reveals his 4,000 calorie diet and large McDonald’s order Meta is secretly building an AI chatbot with the personality of Abraham Lincoln Here’s how to claim your share of $725m settlement in Facebook’s privacy lawsuit

Microsoft has hired OpenAI co-founder and former chief executive Sam Altman just days after he was ousted from his company. Mr Altman was fired on Friday, less than a year after launching the hugely successful AI chatbot ChatGPT, with OpenAI’s board saying it “no longer has confidence in his ability to continue leading OpenAI”. Microsoft CEO Satya Nadella was reportedly “furious” about being blindsided by Mr Altman’s firing, despite the tech giant being a key investor of the artificial intelligence firm. On Monday, Mr Nadella announced that both Mr Altman and fellow OpenAI co-founder Greg Brockman would be joining his company. “We’re extremely excited to share the news that Sam Altman and Greg Brockman, together with colleagues, will be joining Microsoft to lead a new advanced AI research team,” Mr Nadella wrote on X, formerly Twitter. “We look forward to moving quickly to provide them with the resources needed for their success.” Mr Altman replied to the post: “The mission continues.” Mr Altman had previously posted a picture of himself wearing an OpenAI guest pass over the weekend, together with the caption: “First and last time I ever wear one of these.” Mr Nadella followed up his original post on X with further details about what Mr Altman’s new role might be within the company. “I’m super excited to have you join as CEO of this new group, Sam, setting a new pace for innovation,” he wrote. “We’ve learned a lot over the years about how to give founders and innovators space to build independent identities and cultures within Microsoft, including GitHub, Mojang Studios, and LinkedIn, and I’m looking forward to having you do the same.” Read More OpenAI in talks to bring Sam Altman back days after CEO ouster, reports say OpenAI co-founder Sam Altman ousted as CEO ChatGPT Plus stops signups after major update ChatGPT creator mocks Elon Musk in brutal tweet ChatGPT goes offline ChatGPT update allows anyone to make their own personalised AI assistant

A former Apple engineer who fled to China five years ago has been charged with stealing the company’s self-driving car technology. The US Justice Department charged Weibao Wang, 35, for stealing large troves of data from Apple, including trade secrets and technology related to autonomous systems that are used to design self-driving cars. Mr Wang was charged with six counts of theft or attempted theft of trade secrets, according to a press release issued by the department. “Innovation is alive and well in Silicon Valley – indeed, throughout the Northern District of California,” said US attorney Ismail J Ramsey. “Unfortunately, there will always be some who cheat the system by stealing and profiting from the fruits of others’ labour. The Wang prosecution is but one example. We are pleased that the Disruptive Technology Task Force renews energy and focus on securing innovation for those who actually create it.” The former Apple engineer was a resident of Mountain View in California and began working with the tech giant in 2016. He had signed a confidentiality agreement for the project for which he was working on, and very few people at the company knew about it at that time. He began working as staff engineer with the US-based subsidiary of a Chinese company and was working to develop self-driving cars, the indictment said. The company was identified only as “Company One” in the indictment. Mr Wang was also accused of waiting for more than four months before telling Apple that he was resigning, after he signed a new employment agreement with “Company One”. After the last day of his employment at Apple, on 16 April 2018, Apple’s officials found in their logs that he had accessed large troves of confidential data in the final days of his stint at the tech giant. His Mountain View home was searched on 27 June 2018. Law enforcement agents discovered “large quantities of data taken from Apple prior to his departure” during the search, for which Mr Wang was present. After telling the agents that he had no plans to travel, he purchased a one-way ticket to Guangzhou, China, and boarded a flight that same night. In a press conference, Mr Ramsey said Mr Wang remained in China and he could face 10 years in jail, if extradited and convicted. This is the third incident of a former Apple employee being charged for stealing of documents for China. Two other Apple employees have previously been charged in similar cases involving theft of trade secrets, reported the BBC. Read More Elon Musk calls working from home ‘morally wrong’ How many more rapists and killers are in Met? Police force ‘institutionally racist, misogynistic and homophobic’ says damning report The Independent backs calls for jailed media tycoon Jimmy Lai to be released