How Black Holes Are Formed w/ Neil DeGrasse Tyson

[0:00]They're black holes that are formed at the consequence of the death of stars. And we think we understand the formation of stars well enough to say, a star is born with this much mass. And it will lose a certain amount of mass over its life. All stars lose mass because there's so much pressure and so much energy coming out, it carries particles with it. So they they lose mass. The sun is losing mass. It's called the solar wind. So everybody loses mass out there. Uh, the question is at what rate are you losing mass? Is it a lot compared to your total mass, is it small? Very high mass stars are not especially stable objects. They remain stars for 100,000 at most a million years, and they'll explode and become a supernova. If you're more massive than that, they will not explode because the gravity is so strong that it cannot explode against the strength of the gravity, and it collapses into a black hole.