![]() HOST PADI BOYD:And that folks, is how you make a stellar black hole. ![]() And the rest of it condenses into one point, the singularity. Some star stuff is being shot off into space, causing the light shows we call supernovae. HOST PADI BOYD: At that moment, two things are happening. And sothe gravity wins, and when the gravity wins… everything just starts collapsing. JEREMY SCHNITTMAN: And eventually you run out of heat, you run out of this pressure that’s holding up the center of the star, and the gravity just keeps getting bigger and the pressure stays more or less the same. And another force is from the gravity of the iron pulling everything inward. One force comes from whatever fuel is left to be burned. HOST PADI BOYD:And now you have these two forces that are battling against each other. That iron doesn’t do nuclear burning, so it doesn’t give off, extra heat just sits there and it’s getting bigger and bigger and bigger. JEREMY SCHNITTMAN:They build up a big pile of ashes in the center of the star, those ashes. He’s going to explain how a star gives rise to a black hole as it eats up its fuel… HOST PADI BOYD:That’s Jeremy Schnittman, a research astrophysicist at NASA. So the they can go through a lot more nuclear reactions and they burn it all up really, really fast. JEREMY SCHNITTMAN:These big stars burn up their fuel really fast because they have more gravity, which makes the centers of them hotter and denser. HOST PADI BOYD:So how do we get such a large amount of mass to come together at one point in space? Step one: get yourself a large star. HOST PADI BOYD:While they may seem like a hole in the sky because they don’t produce light, a black hole is not empty, It’s actually a lot of matter condensed into a single point. This is actually a misleading word to describe these massive objects. HOST PADI BOYD:So now you know why they’re black, let’s talk about why they’re called “holes”. HOST PADI BOYD:And the more mass, the more gravity! Even though light travels so quickly, it is no match for the gravity of a black hole. It’s things that have mass are all attracted to each other. And so they really don’t like suck things in, they pull things in because that’s how gravity works. REGINA CAPUTO: And so they have very strong gravitational, attractive forces. HOST PADI BOYD:How can they keep such a tight hold on everything? Well they are extremely massive. The name comes from the fact that nothing can escape the gravity of a black hole, not even light. HOST PADI BOYD:Let’s start with the word “Black”. HOST PADI BOYD:Black holes truly are one of a kind. And so if we really want to how gravity interacts with all of the other forces in the universe, like it’s really a playground for understanding how gravity works, how fundamental particles work, how stars collapse in on themselves… REGINA CAPUTO:…We can’t make anything like a black hole on earth to study it. HOST PADI BOYD:That’s Regina Caputo, she’s an astrophysicist at NASA, and she studies black holes – mysterious and fascinating cosmic objects. REGINA CAPUTO:Really, these are the, some of the most extreme environments in the universe. HOST PADI BOYD:This week’s adventure will give you a front row seat to some of the universe’s most perplexing wonders… we’re exploring black holes. I’m PadiBoyd, and in this podcast, NASA is your tour guide! Our universe is a wild and wonderful place. HOST PADI BOYD:This is NASA’s Curious Universe. Once you’re in, you’re stuck and that becomes your universe… Your body would basically start to be stretched like a, like a spaghetti, stretching to get into the black hole where we would never see you again. REGINA CAPUTO:Say you were floating towards the black hole… Basically, the first part of you would start to experience the really extreme gravity. Regina Caputo and Jeremy Schnittman describe what it might be like to go hunting for one. Black holes are some of the most extreme, bizarre and fascinating objects in the universe. First-time space explorers welcome.ĭon’t let the name fool you: a black hole is anything but empty space. Visit our space laboratory, meet the slow-moving crawlers that transport rockets to the launch pad, and dive into faraway galaxies where black holes form. Join NASA astronauts, scientists, and engineers on a new adventure each week - all you need is your curiosity.
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