We had to study this for science.
A blackhole sucks everything in because of a collapsed star, the only way to tell if there is a black hole near is when you see the lightgoing to one point even though it's not.
well its dark (black)and its deep and you can fall inside it and sometimes there is something creapy in it.u know the is ablack hole when you see it or when u miss someone who was with u.
Haa!! am smart!