Black Holes
Black holes are like vacuum cleaners... NOT!
A black hole has an "event horizon" which is a region inside of which you
can't escape. If an object crosses the event horizon, it will invariably hit
the singularity. As long as the object stays outside of the horizon, it
will not get sucked in. Outside of the horizon, the gravitational field
surrounding a black hole is no different from the field surrounding any
other object of the same mass. A black hole is not better than any
other object at "sucking in" distant objects.
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