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A scientist claims to have discovered a “gravitational anomaly” that calls into question our fundamental understanding of the universe. Astronomer Kyu-Hyun Chae from the university of Sejong University in South Korea made the discovery while studying binary star systems, which refer to two stars that orbit each other. His observations appear to go against the standard gravitational models established by Isaac Newton and Albert Einstein, and instead offer evidence that an alternative theory first proposed in the 1980s may explain the anomaly. Analysis of data collected by the European Space Agency’s Gaia space telescope revealed accelerations of stars in binaries that did not fit the standard gravitational models. At accelerations of lower than 0.1 nanometres per second squared, the orbit of the two stars deviated from Newton’s universal law of gravitation and Einstein’s general relativity. Instead, Professor Chae theorised that a model known as Modified Newtonian Dynamics (MOND) could explain why these previous theoretical frameworks were unable to explain the stars’ movements. “The deviation represents a direct evidence for the breakdown of standard gravity at weak acceleration,” Professor Chae wrote in a paper, titled ‘Breakdown of the Newton-Einstein standard gravity at low acceleration in internal dynamics of wide binary stars’, that was published in The Astrophysics Journal.. His research calls into question the existence of dark matter and other peculiar space phenomena that are typically used to justify irregularities with Newton-Einstein standards. “The data reveal an unambiguous and extremely strong signature of the breakdown of the standard Newton-Einstein gravity at weak acceleration,” the study concluded. “What is even more surprising is that the trend and magnitude of the gravitational anomaly agree with what the AQUAL [MOND] theory predicts.” Professor Chae predicts that his results will be confirmed and refined with larger data sets in the future, which could lead to a new revolution in physics. “Chae’s finding is a result of a very involved analysis of cutting-edge data, which, as far as I can judge, he has performed very meticulously and carefully,” said theoretical physicist Mordehai Milgrom at the Weizmann Institute in Israel, who first proposed the MOND model 40 years ago. “But for such a far-reaching finding – and it is indeed very far-reaching – we require confirmation by independent analyses, preferably with better future data. “If this anomaly is confirmed as a breakdown of Newtonian dynamics, and especially if it indeed agrees with the most straightforward predictions of MOND, it will have enormous implications for astrophysics, cosmology, and for fundamental physics at large.” Pavel Kroupa, professor at Charles University in Prague, added: “The implications for all of astrophysics are immense.” Read More Perseids 2023: Meteor beacon offers unique way to observe spectacular shower over UK Slack announces its biggest ever update Why you might never have to remember your password again AI can predict Parkinson’s subtype with up to 95% accuracy, study suggests

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Metropolitan Police chiefs should carry out a thorough investigation of the force’s cyber security practices following an IT breach, industry experts have said. Scotland Yard said on Saturday that it had been made aware of “unauthorised access to the IT system of one of its suppliers”. The company in question had access to names, ranks, photos, vetting levels and pay numbers for officers and staff. The force is now working with the company to understand if there has been any security breach relating to its data, and was unable to confirm how many personnel might be affected. Cyber security experts said the possible data breach is “extremely worrying” but unsurprising as cyber attackers frequently target third-party companies. The Met Police are extremely good at keeping their own data secure, but they do use third parties. As they have to use these parties, if they aren’t up to date with their own security then that becomes a weakness that could be targeted Jake Moore, ESET Jake Moore, global cyber security adviser for software firm ESET, told the PA news agency: “This is another extremely worrying episode of what we seem to be seeing quite a lot of this year. “It’s just worrying to think these police forces are coming under attack in what I would suggest are relatively simple ways.” Mr Moore said the current suspected breach appears to have been “a targeted attack to test the security within the supply chain” where criminals were “looking for the weakest link”. He added: “The Met Police are extremely good at keeping their own data secure, but they do use third parties. “As they have to use these parties, if they aren’t up to date with their own security then that becomes a weakness that could be targeted.” Mr Moore suggested that current cyber security systems used by police forces, coupled with a lack of resources, may have led to flaws opening up. He said: “It’s not impossible to stop this. It’s to do with understanding where all your data is. “When you amalgamate systems, particularly when police forces join together, they tend not to understand completely where all their data is or who has access to it, and that can cause problems down the line. “They need to do a complete analysis on who has access, why they have access to their data, and to reduce all of those weak points as best they can. “It will take time – not necessarily too much money – but it will take resources and people power to mitigate this in the future, and hopefully something like this will shake the boots of all the chiefs around the country to wake up and act faster.” We do have best practices and guidelines in the industry on how to protect the systems, so maybe it comes down to someone conducting an external audit in the aftermath to see whether or not they are following these practices Professor Kevin Curran, Ulster University Kevin Curran, professor of cyber security at Ulster University, agreed that the breach is likely to be down to “a third-party supplier issue”. He said: “I’m not surprised really – data breaches are such a common occurrence and police are no exception. “They have the same resources as a lot of other companies, where any data systems which have external access to the internet are a risk.” Mr Curran said questions need to be asked about why third parties have access to such information, and if the Met has the right data classification methods in place. He added: “It boils down to resources. Every organisation has to allocate a percentage of their IT budget to cyber security. “It’s a publicly-funded organisation so there’s only a finite amount of resources you have, but we do have best practices and guidelines in the industry on how to protect the systems, so maybe it comes down to someone conducting an external audit in the aftermath to see whether or not they are following these practices.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live Social media firms should reimburse online purchase scam victims – Barclays Hozier would consider striking over AI threat to music industry Snapchat experiences ‘temporary outage’ as My AI chatbot posts own Story

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Instagram’s team is working on a number of updates for its new Threads app, its management has said. Meta launched Threads – a Twitter rival that is built by the Instagram team and uses its branding – late on Wednesday. It has already gained some 70 million users, capitalising on chaos and technical problems at Twitter. But it is still without a number of major features, including those that are readily available on Twitter. The head of Instagram, Adam Mosseri, has been responding to users on the Threads app itself promising that a number of those features are coming. Chief among them is the option to change between accounts. Even though Threads is a separate app from Instagram, users must sign up with an Instagram account – which is then stuck signed in, without the option to quickly switch between other accounts. Mr Mosseri said that and many other additional features were being worked on by its team. Those other tools including a devoted desktop version, better search and hashtags, and better integration between Threads and Instagram so that posts can be shared between the two. But perhaps the biggest request has been for a chronological feed that includes posts only from those accounts that a user actually follows. At the moment, Threads is built around one news feed that is filled with algorithmically chosen content, much of which comes from accounts that a user has not explicitly chosen to subscribe to. Mr Mosseri said that was being worked on, and could arrive in the “next couple weeks”, but it was not necessarily a priority. “I do think a lot of why people are getting so much engagement right now is because you don’t need to follow a bunch of people in order to discover a bunch of new accounts in feed,” he wrote. Threads has ruled out some expected changes, too. That includes direct messages, with Mr Mosseri suggesting that he did not want to give users another inbox to check, with Meta already offering a number of other messaging platforms. Both Mr Mosseri and his boss, Mark Zuckerberg, have ruled out any rush to put ads into Threads. Mr Zuckerberg said that the site would decide on ads when the app was moving towards a billion users, and that for now the company was working on getting even more scale. Read More Threads hits 70 million sign-ups on its second day People are realising something really worrying about Threads Twitter threatens legal action against Meta over new ‘Threads’ app

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