Black holes are believed to form from massive stars at the end of
their life times. The gravitational pull in a black hole is so great
that nothing can escape from it, not even light. The density of matter
in a black hole cannot be measured. Black holes distort the space
around them, and can often suck neighbouring matter into them including
stars.
There are three types of black holes. The Static Black Hole, the Charged
Black Hole, and the Rotating Black Hole.
There are also many types of stars. This includes stars such as Red
Giants, Dwarves, Supernovas, and Neutron Stars. Each star has a unique
quality that separates them from the rest.
