Neutron+Star

 __Defintion__ 
=== A neutron star is a stellar remnant which is a 'super-compressed' object left over when stars with a mass between 1.4 and about 3 times the mass of our Sun (which is similiar to the mass of a pulsar) exhaust their nuclear fuel and collapse inwards. - This leads to a sphere of matter about 20 km across. This process is also known as a supernova explosion. ===

 The following video shows what a neutron star is like and how the supernova explosion occurs:
