A low intergalactic grumbling is emanating from deep space, according to scientists. And no, it’s not the start of the end times. Astronomers say they detected the first-of-their-kind low frequency ripples, described as a “cosmic bass note” of gravitational waves, which is thought to be caused by supermassive black holes merging across the universe. The discovery could unveil new secrets about how the monster black holes, which lie at the centre of galaxies, work. The objects are millions – possibly billions – the times the mass of the sun, but little is known about them because no light can escape. Sign up to our free Indy100 weekly newsletter “This is huge news,” said Dr Stephen Taylor, chair of the North American Nanohertz Observatory for Gravitational Waves (Nanograv) consortium, which led the team which made the discovery, and an astrophysicist at Nashville’s Vanderbilt University. Dr Michael Keith, of Jodrell Bank Centre for Astrophysics and a member of the team which helped find the signal, added: “The results presented today mark the beginning of a new journey into the universe to unveil some of its unsolved mysteries. “We are incredibly excited that after decades of work by hundreds of astronomers and physicists around the world, we are finally seeing the signature of gravitational waves from the distant universe.” Before the discovery, scientists have only captured short “chirps” of gravitational waves which are linked to the massive objects merging. But the “bass note” comes after they tuned into a deeper range of frequencies. It is thought to be caused by a single complete gravitational wave travelling at the speed of light. Astronomers think it is produced by the entire population of supermassive black hole binaries from over roughly the last 8bn years of the universe. “We think each pair contributes a little wave, which is added to a little wave of another, and all together that is what we may see right now – a sort of murmur of the entire population,” said Prof Alberto Vecchio of the University of Birmingham and a member of the European Pulsar Timing Array. Prof Andrew Pontzen, a cosmologist at University College London, added: “It’s not often that we get a glimpse of the universe through a totally new lens, but after 15 years of patient work, Nanograv seems to be providing just that. It’s tremendously exciting to see initial evidence for these waves, which will eventually teach us an enormous amount about supermassive black holes, hundreds of millions of times the mass of the sun.” The findings were published on 29 June by Astrophysical Journal Letters. 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.

HONG KONG China's internet giant Tencent Holdings said that it will unveil an artificial intelligence (AI) chatbot on

The King has hailed artificial intelligence (AI) as “one of the greatest technological leaps in the history of human endeavour” but warned of the urgent need to work together to combat its “significant risks”. In a video message for the opening session of the AI Safety Summit at Bletchley Park, the King stressed the need to make sure the technology remained “safe and secure”, and said the speed of its advancement could surpass even human understanding. He likened the “rapid rise of powerful artificial intelligence” to the world’s greatest scientific breakthroughs including the discovery of electricity and the splitting of the atom – and even the harnessing of fire. And he spoke of its potential to “transform life as we know it” for the better, possibly leading to cures for cancer and other diseases, and helping to create green energy. Charles, in footage recorded at Buckingham Palace before he left for his state visit to Kenya, said: “We are witnessing one of the greatest technological leaps in the history of human endeavour. “The rapid rise of powerful artificial intelligence is considered by many of the greatest thinkers of our age to be no less significant, no less important, than the discovery of electricity, the splitting of the atom, the creation of the world wide web, or even the harnessing of fire.” He added: “AI holds the potential to completely transform life as we know it to help us better treat, and perhaps even cure, conditions like cancer, heart disease and Alzheimer’s; to hasten our journey towards net zero and realise a new era of potentially limitless clean, green energy – even just to help us make our everyday lives a bit easier. “However, if we are to realise the untold benefits of AI, then we must work together on combating its significant risks too.” The AI summit sees representatives of nearly 30 countries, including the US, France and China, meeting with leading AI companies and civic society groups to discuss the risks of the emerging technology. Delegates have already agreed on a world-first statement – the “Bletchley declaration on AI safety” – it was announced on Wednesday. The King thanked those attending for laying the foundation for a consensus to ensure “this immensely powerful technology is, indeed, a force for good in this world”. Highlighting the need to keep on top of the technology, the King said: “AI continues to advance with ever greater speed towards models that some predict could surpass human abilities, even human understanding. “There is a clear imperative to ensure that this rapidly evolving technology remains safe and secure.” He said transitions such as AI always presented “profound challenges, especially in preparing for unintended consequences”. But Charles said: “It is incumbent on those with responsibility to meet these challenges: to protect people’s privacy and livelihoods, which are essential to both our economic and psychological well-being, to secure our democracies from harm, and to ensure the benefits of new technology are shared by all.” Describing the international community’s co-operation on climate change, the King added: “We must similarly address the risks presented by AI with a sense of urgency, unity and collective strength.” Read More Kamala Harris arrives in the UK ahead of AI safety summit Study finds ‘deepfakes’ from Ukraine war undermining trust in conflict footage More than 500 potential cyber attacks logged every second, BT says AI being used to create child abuse imagery, watchdog warns ChatGPT and other chatbots ‘can be tricked into making code for cyber attacks’ Tinder adds Matchmaker feature to let friends recommend potential dates

The Arrow Smart-Kart is a high tech go-kart designed to satisfy every kid's need for speed—and every parent's desire for safety.

Scientists have gathered a significant chunk of a distant asteroid, which has made its way to Earth after a mission taking millions of miles. But the really useful work will begin now. Nasa’s Osiris-Rex mission flew to the distant Asteroid Bennu, scooped up a piece of the object into a canister, and then flew back to Earth to drop it off. On Sunday, Nasa picked up that canister in the Utah desert and is now working to secure it. It will then send those samples to a variety of scientists around the world, with a chunk of it being sent to more than 200 people at 38 different institutions across the world. They hope that they can use them as a “time capsule” to peer into the early universe, telling us about where we came from. “This box when it is opened of material from the surface of Bennu can tell us untold secrets of the origins of the universe, the origins of our planet and the origins of life itself,” said Queen musician Brian May, who helped with the research by mapping out the asteroid to find a landing spot. “What an incredibly exciting day.” Sample return missions are particularly exciting to scientists because they offer a look at a pristine piece of a distant world that has been undisturbed by the environment on Earth. While some pieces of asteroids and other objects can fall down to Earth, they have to make their way through the atmosphere and can be damaged and changed in the process. They also mean that researchers are able to use all of the Earth’s latest technology to study the sample. Other pieces of distant worlds have of course been studied by spacecraft and landers, but they are only able to do so with the limited instruments they take to those planets. Another advantage of sample return missions over studying the objects at their home is that scientists can look back at those samples with new sensors and equipment invented long after the sample was actually taken. Many space missions continue for years – Curiosity is still examining Mars after arriving there in 2012, and the Voyager probes are still providing information almost 50 years after they were launched – but they are only able to do so with the technology that was available when they set off. The analysis done in sample return missions really begins when the spacecraft arrives at its target: then, it starts looking at the context of the sample, gathering information about the world from which it came that should prove useful to scientists later. Osiris-Rex arrived at Bennu in 2018, and spent two years mapping the asteroid before it set off back home with its delivery. All of that information in addition to the samples could help answer a variety of questions about our planet, scientists hope. “The asteroids in our solar system contain the raw building blocks from which the Earth was made, so working out their composition will tell us a lot of how our planet formed,” said Boris Gansicke from the department of physics at the University of Warwick. “There are many open questions, for instance, where did the water that we have on Earth come from? And where did the ingredients that made life possible to develop come from? “To answer those questions, ie measure the composition of an asteroid, you need to get your ‘hands’ on them (or in this case the arm of a space mission), and this is what Osiris-Rex achieved. “In a nutshell, it’s similar to sitting in front of a delicious dinner and wanting to have the list of ingredients.” Sample return missions are almost as old as space travel itself, and the first of them were the early Apollo missions, which brought back pieces of the Moon. Those continue to be useful to scientists. Since then, as human travel into space has declined, most of the work has been done by robots. In the early 1970s, the Soviet Union’s Luna missions gathered pieces of the Moon and brought them back, and in 2020 Japan’s Hayabusa2 mission brought back pieces of the asteroid Ryugu. Scientists have high hopes for future missions: perhaps the most discussed is a mission to Mars, which would bring back the first ever pieces of that planet. Engineers have suggested that for decades, and a number of plans have been formed, but none are likely to launch any time soon. Read More Nasa spots shocking number of galaxies like our own Nasa lands Bennu asteroid samples back on Earth Nasa just delivered a piece of a distant asteroid to Earth Pieces of a distant asteroid are about to fall to Earth Nasa to return largest asteroid sample ever as UK helps with research Massive solar flare strikes Nasa spacecraft sent to study Sun

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HANOI, Vietnam--(BUSINESS WIRE)--Jul 19, 2023--

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