![]() Orbiting planets wouldn't notice any difference. The black hole would have the same mass, and therefore the same gravity, as the original sun. Because the sun's core is very small, the ergosphere would also be small - so small, in fact, that the planets would probably just continue to orbit in their usual manner. Since the sun is a rotating star, its core would continue to rotate, making it a Kerr black hole with an ergosphere. Now, just for argument's sake, suppose the sun did become a black hole and the Earth and other planets managed to survive the transformation. As its temperature continues to cool, it will eventually become a black dwarf. At this point, the sun will then be a white dwarf. When this happens, a planetary nebula will form, leaving behind a very dense, mostly carbon core about the size of Earth. Eventually, millions of years later, the sun will quite literally run out of gas. As this happens, the sun will increase in size and most likely consume Mercury and Venus and possibly Earth. When the sun dies, about 5 billion or so years from now, scientists believe it will expand into a red giant. The sun's core isn't large enough for it to become a black hole at all. So, what if the sun were to become a black hole? It turns out that the chances of this actually happening are pretty much nil. Once inside the black hole, that lone anti-particle could meet a single particle, resulting in the two, in Pacucci’s words. What remains is the highly compressed and extremely massive core. Its antiparticle twin, though, could get sucked into the black hole. As the core compresses, it heats up and eventually creates a supernova explosion in which the material and radiation blasts out into space. ![]() At the same time, the star's gravity pulls material inward and compresses the core. The balance between the gravitational forces and the explosive forces is what defines the size of the star.Īs the star dies, the nuclear fusion reactions stop because the fuel for these reactions gets used up. The fusion reactions happening in the core are like a giant fusion bomb that's trying to explode the star. Because stars are so large and made out of gas, an intense gravitational field is always trying to collapse the star. A massive star usually has a core that's at least three times the mass of the sun. A black hole is what remains when a massive star dies. ![]() Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.To answer this question, first we need to look at what black holes are and how they work. ![]() The speed at which the material is being emitted from the black hole is also unusual as typically it travels at 10 per cent of the speed of light, as opposed to 50 per cent in this case. He wrote: “But in AT2018hyz there was radio silence for the first three years, and now it’s dramatically lit up to become one of the most radio luminous tidal disruption events ever observed.” Harvard University astronomy professor, Edo Berger, co-authored the study and explained that while it’s not uncommon for stellar matter to be emitted by black holes while consuming a star, the fact it took three years, in this case, makes it notable. Sign up to our new free Indy100 weekly newsletterĬendes explained: “It’s as if this black hole has started abruptly burping out a bunch of material from the star it ate years ago.” The results were published in the Astrophysical Journal this week and suggested that, after an unexplainable three-year delay, the black hole was regurgitating stellar matter at half the speed of light. Yvette Cendes, the study’s lead author said: “This caught us completely by surprise - no one has ever seen anything like this before.” ![]() Since the black hole hadn’t consumed anything else since the star in 2018, scientists studying the unusual phenomenon have determined that it must have been “burping” out material from the star it consumed three years prior. The small star in a galaxy 665 million light years away was considered to be all but gone until June 2021, when astronomers were taken “completely by surprise” when the black hole began to exude stellar matter making it glow. In 2018, the star in question was witnessed by scientists getting sucked into a black hole after it got too close – a phenomenon that is not uncommon. Scientists and astronomers have been left baffled after a strange phenomenon appeared to see a supermassive black hole “burp” up a star that it had swallowed three years before. ![]()
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