Scientists have created what they say is the biggest simulation of our cosmos ever. The virtual universe has the mass of 300 billion galaxies, packed into a space with edges ten billion light years across. Scientists hope that it will help tell us how the real universe that surrounds us first evolved. They could also help address problems in our understanding of physics that currently suggest we might have made deep mistakes about the cosmos. But the first results from the simulation suggest that it might not work: the findings do not get rid of the tensions between different observations about the universe that have proven so difficult to scientists. Researchers created the simulation, named FLAMINGO, by taking the vast amount of data that has been gathered by telescopes such as Nasa’s JWST and other projects. Those projects give information about galaxies, stars and the other arrangement of matter in our cosmos, which can then be fed into the computer. Researchers then hope that the computer can use that data to simulate the evolution and nature of our universe. That can then help resolve those fundamental difficulties we currently face in physics. One of those issues come from the current theory that the properties of our universe are decided by only a few “cosmological parameters”. We can measure those parameters very precisely. But scientists have run into issues because those parameters do not always match. For instance, there are multiple ways of measuring the Hubble constant, or the speed at which the universe is expanding – but those multiple ways show different results, and scientists have not been able to explain them. Scientists hope that the simulation can help explain or resolve that tension. But it is yet to do so. That is just one of the many ways that the creators of the FLAMINGO simulations hope that they can be used to better understand the universe and the observations that we have of it. It might also allow us to make new kinds of discoveries: the vast amount of data means that it can construct random, virtual universes and see how theories work in there, for instance. The work is described in three papers, all of which are published in the Monthly Notices of the Royal Astronomical Society today. Read More Scientists see huge explosion in space – and it could explain life Massive space explosion observed creating elements needed for life Tim Peake: Possibility of all-UK space mission a ‘very exciting development’

Elon Musk has said X, previously known as Twitter, will fund the legal bills of any user ‘unfairly treated’ by an employer for their activity on the social media platform. Posting on the recently-rebranded site on Sunday, he added there would be ‘no limit,’ encouraging users to ‘please let us know’. Musk has been vocal about his commitment to freedom of speech in the past, once defining himself as a ‘free speech absolutist’. Shortly after acquiring Twitter, he tweeted: “Free speech is the bedrock of a functioning democracy, and Twitter is the digital town square where matters vital to the future of humanity are debated”. The post has already received over 18,000 replies to his post, with Musk responding to just one so far from right-wing account ‘Libs of TikTok’. Chaya Raichik, who operates the account, claims US content creator Kara Lynne was fired by her former employer for following her and other right-wing accounts on Twitter. Reaching out to Lynne directly, Musk replied: “Kara, is that accurate?” The billionaire CEO’s interactions with the ‘Libs of TikTok’ account, noted for its anti-trans and anti-LGBTQ+ content, have been criticised in the past. In December, he was accused of amplifying anti-trans bigotry when he liked a tweet from them. Earlier this week X Corp, Musk’s firm that owns X, launched a lawsuit against the Center for Countering Digital Hate (CCDH). The move came after the group published research criticising the platform for an increase in hate speech under Musk’s leadership. X Corp has accused the CCDH “unlawful acts” to “improperly gain access to its data”. The not-for-proft organisation researches and campaigns against online hate, and is often cited by the press. In response to the lawsuit, CCDH founder and CEO Imran Ahmed said: “Elon Musk’s latest legal move is straight out of the authoritarian playbook – he is now showing he will stop at nothing to silence anyone who criticizes him for his own decisions and actions.” “CCDH has no intention of stopping our independent research – Musk will not bully us into silence.” Read More X marks the lawsuit: Elon Musk's social media company sues nonprofit highlighting site's hate speech Flashing ‘X’ sign removed from Twitter’s headquarters in San Francisco Meta’s Twitter rival Threads sees steep drop in daily users by 80 per cent, report says Mark Zuckerberg reveals his 4,000 calorie diet and large McDonald’s order Meta’s Twitter rival Threads sees ‘steep drop in daily users by 80 per cent’ Twitter takes down giant ‘X’ sign on roof after a week following city investigation

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