Originally Posted by Slade
Black Holes aren't 'holes' at all. A black hole is what is left after a white dwarf star has died. A star starts as a burning gas ball. As it ages, it gets bigger and redder (depending on the colour I spose. A blue star would get bluer). Once it has reached its top size it begins to shrink. As it shrinks it cools off and becomes what is known as a White Dwarf. After a while the star dies out, becomes black and is known as a 'Black Hole'. A black hole has a huge gravitational pull and thats where all that stuff about things getting sucked into it come from and because even though a 'Black Hole' is much, much smaller than the original size it was when it was a star, it is still way bigger than the planets it engulfs. Hence the reason why it also sucks in planets and they crumble and die when they hit its surface.