Dead Stars
Stars end their life depending on the size of the star. A star the size of our sun would grow to a supergiant and become a neutron star. Bigger suns become massive red giants that blow up into a supernova and become a pulsar, nebular star, or a black hole.
Neutron Stars
After a supernova, the matter may be condensed into the form of a neutron star. The neutron star is very small but has an extremely powerful gravitational pull. Pulsars are neutron stars that are super-dense and rotate quickly so that they pulse energy
Pulsars
Pulsars squish matter in a most powerful way. The protons (positive charge) and electrons (negative charge) in the core of the pulsar is crushed in to neutrons. The pulsar has a magnetic charge a trillion times more powerful than Earth's. Due to its spin and compression, it shoots two powerful radiation beams from its poles like a light hose.
Quasars
Quasars are the brightest things in the universe and have such an immense power that we can only respect it. It is believed that each quasar is actually the light given off when a supermassive black hole (weighing as much as 100 billion suns) "sucks in" the stars.
As the stars get closer, they get even hotter and expand and shine brighter than ever before. As the matter enters the center of the quasar the charged electron particles shoot at near light speed and can travel thousands of light years. It becomes so bright that quasar billions of light-years away can be seen clearly it clearly in the night sky.
