Documents How to Make a Black Hole When really massive stars burn out, they turn into black holes. To...

The basic parts of an atom Neutron (0) Proton (+) Electron (-) The electrons spin around the outside of the nucleus. Key In fact, there is so much empty space between an…

Documents What Makes them Black Holes

What Makes them Black Holes Other than the classical Rees argument about efficiency, size and luminosity what observational properties make these objects black holes ? High…