Transcript
oI65hVuFYbI • A Scientist Walks into a Bar: Black Holes
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Kind: captions Language: en When we were studying the black holes, the most surprising thing for me, they're actually just a very dark brown or a navy blue. You know, sometimes you look at a suit and you think it's black, but it turns out it's just a very dark navy blue suit. Yes. Same thing with black holes. [Music] How do you have so much information on the black hole if we're so far away from it? The stars right around the black hole feel the influence of the black hole. So they are whizzing around the black hole. [Music] A black hole uh is when a star uses up all of its fuel which is hydrogen uh and it dies. Not every star that dies becomes a black hole. Is very very tiny but has a ton of mass and that allows it to sort of stretch the fabric of spaceime starts sucking in things around it. It's like a vacuum cleaner. It's relatively small, but super super heavy. Like a dark comedy. It just sneaks up on you how heavy it is. More massive stars tend to leave black holes behind. A black hole is the end state of a star. It's the corpse that a star leaves behind. They've gone from being sort of this enigmatic object to being sort of an essential part of the formation of galaxies in the universe. [Music] Once you pass the event horizon, there's no escape. Light, sound, even information is irretrievable. What happens if you get too close to a black hole? You get sucked in. If you go in head first, you'll you'll get stretched. So, we can't know what's happening in a black hole directly because anything that gets sent in can never escape. Anything outside of that is safe. I guess the other thing that's interesting about a black hole is that the more we study them, more we realize that they have like a sweet center, like a nougaty center. People are scared of the black holes, but it turns out they're just they're just sweet inside. They're tasty, delicious. [Music] The gravity is so so intense. It's very tightly packed. It's a very very dense. The densest form of packing that we know in the universe. the stars that are around it and how they're behaving and that's when we know that uh something is happening and uh there must be a black hole there. When two black holes collided recently, it created sort of a earthquake of sorts, a space earthquake that we were able to measure and gave us further information about black holes and their existence. We know that black holes exist because of the gravitational influence that they exert around themselves. So any star that strays in very close to the black hole stands to be gobbled up and captured by the black hole. But stars that are further out will actually get bound to the black hole and will be whizzing around in orbits. Additionally, very recently, uh we actually had a technological breakthrough and detected the collision of two black holes. And so we detected that earthquake in space [Music] time. Quazars are basically black holes that are in the process of growing by gobbling in a lot of gas. And the gas as it's flowing in is glowing. So you see the glow. And so quazars are the brightest objects in the universe. Brighter than Beyonce. Yeah, I would say so. I feel like she's the brightest light in our universe. No, I think we're talking different scales. We're talking cosmic scales. Oh, no. I don't know if you saw Lemonade, but it is definitely cosmic.