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Life Cycle of Betelgeuse
Transcript of Life Cycle of Betelgeuse
Betelgeuse, like all stars, are born from solar nebulas as main sequence stars by fusing hydrogen with helium. However, Betelgeuse ran out of hydrogen, so it started expanding and becoming a massive star. But, the bigger the star, the quicker its life cycle.
When Betelgeuse ran out of helium to burn, its core began to collapse and heat up. That made the outer layers cool and expand, thus growing larger and larger until eventually becoming a red supergiant.
In about 100,000 years, Betelgeuse will have reached the end of its life. It will run out of fuel and explode, making it a supernova.
M2 type red supergiant
brightest star in the constellatio Orion
15 times the mass of the sun
50,000 times as bright
640 light years away
After a red supergiant explodes, it will become one of two things.
A neutron star is a remnant of a star that exploded. It is very, very small, having a radius of only about 12 kilometers, but can have the mass of two suns.
A black hole is a region of spacetime that has such great gravity that nothing can resist it. Whatever goes in it will never come back out.