if there is even just one blackhole, wouldnt it just keep on consuming matter and eventually consume everything?
In: Planetary Science
No it wouldn’t for the same reason any other stellar body hasn’t. Stuff in space tends to stabilize into orbits. Some stuff will collapse in, but others will be in a stable orbit (or at least a very slowly decaying one). Stuff can orbit black holes without falling in like the earth orbits the sun without falling in. If you swapped the sun with a black hole of the same mass, none of the plants would orbit noticeably different.
Also, black holes evaporate over time due to hawking radiation. They’re not forever.
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