Gravity is gravity is gravity. Are you a gigantic super red giant star? Do you have something orbiting you 0.5 light years away because you big massive star? Great, let’s shrink you star down to a pin head. You got the same mass so you got the same gravity! But, if light get close to you, it get sucked in. Only if it get super close though. That thing out 0.5 light years out? It don’t know difference because you still same mass, same gravity. But now your gravity is super concentrated and there’s an area around you with super suck. But it’s small. The boundary of that area is called the “event horizon”.
One day when you find another black hole you fall in love with, you can merge together. And then later you can merge together with more black holes in a weird polyamorous way like they do in California. Then you become a Super Massive Black Hole, and you can have whole galaxy orbit you!
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