Supermasive black holes: killers and birthers of stars and galaxies


Black holes are able to eat up just about anything that falls into them. You need to see that I mentioned falling, not being sucked in. Today we know that at the center of each galaxy is a supermassive black hole, a black hole that can be hundreds or millions of times the mass of our Sun. Some supermassive black holes are nearly 17 billion times the mass of our Sun.

Black holes kill other stars, but they also help creating stars or new galaxies. As matter falls in, an accretion disk is created at its equator. That matter is speeding a big velocities around the black hole and some of it is spewed outwards sometimes directly at a nebula or galactic gas cloud.

That accelerated matter, given its new energy, is able to clump the gas cloud together and then help in forming new stars. Interesting.

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