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 Astronomer uncovers ‘direct evidence’ of gravity breaking down in the universe Mark Zuckerberg hits out at Elon Musk for wasting time over cage fight Vote to empower autonomous ‘robotaxis’ from Cruise and Waymo divides San Francisco

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You may have noticed someone close to you changing – perhaps they are more forgetful, not quite themselves. After a quick search online or a chat with family members or friends, you may be left thinking they’re developing Alzheimer’s. But how do you approach a conversation about dementia when it’s such an emotive topic? “As we get older, we’re all prone to becoming more forgetful, taking longer to remember certain things, getting distracted more easily or struggling to perform several tasks at once,” says head of knowledge at Alzheimer’s Society, Dr Tim Beanland. “These are common signs of getting older, but there is still a very sharp distinction between normal ageing and dementia.” Symptoms that may worry you “Symptoms of dementia gradually get worse over time,” Beanland explains, “and can appear as memory loss, confusion, needing help with everyday tasks, problems with language and understanding, or changes in behaviour. Although symptoms typically occur in people aged 65 and over, they can occasionally appear as early as twenty years sooner.” You may be scared Seeing these types of changes is understandably worrying – it’s a reminder of the age and health of those around us. “Noticing what might be dementia symptoms in a loved one can be distressing and confusing, particularly for people who have never dealt with dementia before,” Beanland says. “Both parties may feel nervous or worried about how to address the topic of potential dementia symptoms, and may not know where to begin.” Be open Beanland suggests asking questions like, ‘How are you feeling lately, physically and emotionally?’ Or ‘Do you have any health worries you’d like to talk about?’ It’s important to remember when approaching someone who may be experiencing dementia symptoms to do so gently, calmly and in a reassuring and supportive manner. “People experiencing dementia symptoms may find it difficult, or take a bit longer, to find the words they wish to say,” notes Beanland. “So, allowing them extra time, or giving them gentle prompts, can help them find the words they’re looking for, without highlighting they’ve forgotten something.” Do your research Dementia or Alzheimer’s may not be the only answer. It’s important to remember there are other conditions which can cause similar symptoms to dementia, such as thyroid problems or urinary tract infections, says Beanland. “Try to focus on helping the person see their GP, to find out what is causing the problems they are having. It’s also important to understand that, whether you are experiencing dementia symptoms personally or you’re a concerned loved one, you do not have to face dementia alone. There is support out there for you. “I’d encourage anyone worried about their own or a loved one’s memory to use Alzheimer’s Society’s symptoms checklist. It will help to unlock the vital care and support you need, and give you the precious time needed with your family to plan for the future.” Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live As Simon Cowell shares positive therapy experience, how can it help even if you aren’t in crisis? Project launched to bust myth that cancer is a ‘white person’s disease’ 10 slick ways to kit out your student digs

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