List of All Articles with Tag 'ce'

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.

LONDON--(BUSINESS WIRE)--Oct 31, 2023--

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By Nivedita Balu and Granth Vanaik (Reuters) -Bank of Nova Scotia is raising C$895 million ($647 million) in cash by

NEW YORK--(BUSINESS WIRE)--Oct 31, 2023--

PANAMA CITY Daily ship crossings on the Panama Canal, one of the world's main maritime trade routes, will

By Luc Cohen NEW YORK FTX founder Sam Bankman-Fried was grilled on Tuesday about what a U.S. prosecutor

Human beings are fascinating creatures and one of the oldest philosophical debates is over whether people truly have free will or not. For millennia, scientists have debated over whether free will is simply an illusion of the mind and is a concept that doesn’t even exist, or, if our species naturally possess it. Some experts, such as the philosopher Bernardo Kastrup, argue that we do have free will. He defined it as existing “if our choices are determined by that which we experientially identify with”. Kastrup claimed that his “tastes and preferences” are “consciously felt by” him, thus the choices he makes are “determined by these felt tastes and preferences”. Essentially, Kastrup argues, we are able to choose what action to perform and this gives humans a level of free will. On the other hand, neurobiologist Robert Sapolsky from Stanford University believes humans don’t have any free will, after studying the subject for “decades”. In his book Determined: A Science of Life Without Free Will, Sapolsky argues that almost all of our behaviour as humans is beyond our own conscious control. He argued: “The world is really screwed up and made much, much more unfair by the fact that we reward people and punish people for things they have no control over. “We’ve got no free will. Stop attributing stuff to us that isn’t there.” Sapolsky believes that behaviour that we believe originates from free will is actually related to your environment, body, upbringing and genes. Speaking on the CultureLab podcast by New Scientist, Sapolsky explained: “In terms of my orientation, my basic approach is you look at a behaviour and someone has just done something that’s wonderful or awful or ambiguously in-between or in the eyes of the beholder, but some behaviour has happened, and you ask, 'Why did that occur?' and you’re asking a whole hierarchy of questions.” He continued explaining that the prompts to our behaviour could include, “which neurons did what, 10 milliseconds before” and may even originate from “this morning’s hormone levels” and the impact this has on your sensitivity levels in the brain. Additionally, behaviour, he argues can determined by prior trauma and even go back to the “childhood and foetal environment” and our individual genes. To summarise, he argued: “If you’re talking about genes, by definition, genes and behaviour, by definition, you’re talking about evolution and you’re talking about neurobiology and genetic variance and neuronal function. “If you’re talking about, you know, early trauma in life, you’re talking about epigenetics and you’re talking about adult propensity. “So, they’re all one continuous seam of influences, and when you look at it that way, there’s not a damn crack anywhere in there to shoehorn in a notion of free will.” Sign up to our free Indy100 weekly newsletter How to join the indy100's free WhatsApp channel 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.

BOSTON--(BUSINESS WIRE)--Oct 31, 2023--

Wall Street is drifting following mixed earnings reports from big companies

By Tim Hepher PARIS Europe's top space official said on Tuesday there was "light at the end of

SANTA MONICA, Calif.--(BUSINESS WIRE)--Oct 31, 2023--