Black holes

A blackhole is an infinitely dense.

Created by medium sized stars that go supernova.

Not dense enough so light can escape.

All matter gets pushed to the centre (singularity).

Event Horizon is the point of no return.

The ergosphere is the point of which you enter the blackholes orbit.

A stellar massive black hole is 10-100 solar masses.

A super massive black hole is less than 100 solar masses.