Question: How does a black hole suck things into it ???

David Wilson answered on 11 Nov 2014:

A black hole doesn’t really suck things it to it- in fact beyond a certain distance you can orbit around a black hole just like a star or planet. However, black holes have immense gravity, so if you do get too close and fall into it you’ll never escape. Nothing, not even light, can move fast enough to escape the gravity.