ah, yes that's the name of a song by Sound Garden, but it's also precisely how astrophysicist's describe the notion of a Black Hole.
Right on the edge of the 'event horizon' matter shrinks and hurtles possibly beyond the speed of light, towards the singularity, graphically seen in the image here.
Since you can't see black holes directly, how do we know they are there? ;The following documentary video tries to tell the story of black holes up to the first observation of one.
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nevertheless
