Supernova+and+Quasar

**__ Supernova __**

 * A supernova is an exploding star that can be billions of times brighter than the original sun eventually, fading away. A supernova is basically a grand finale before a star dies out into a pusalr star or a white dwarf. The maxium brightness of a supernova can surpass an entire galaxies brightness. This explosion throws a large of dust and gas clouds into space and the mass of the dust and gas may weight more than our own sun. There are two types of supernovas that astronemers recognize them by, Type I Supernova and a Type II Supernova. A type I supenova occurs in some binary stars ( a binary star is a pair of stars that are close together and orbit about each other). One of the smaller stars out of the two; most likely a white dwarf sucks mass from its larger companion until it reaches its limit, it collapses and then explodes to from a Type I supernova.

A Type II Supernova is when a single star dies. The star is bigger than the sun. The sudden rease of energy from the massive star causes it to erupt into a supernova. Supernovas can last from weeks, to months and sometimes years. Supernovas leave behind allsorts of material for example, a quark is left behind from all the gas and dust that was given out by the supernova. Scientists believe that supernovae created all the heavier elements, such as iron, gold, and uranium, that are found on earth and have been detected in objects outside the solar system. **   http://www.worldbookonline.com/wb/Article?id=ar540310.

** Quasars Quasars are know to be the brightest and the most distant objects in the universe. Quasars were first know to be radio stars because they emitted strong radio waves. As our technology improved and got better astronomers realized that they were not actually stars, the radio emissions were coming from a pair of lobes surrounding these faint star-like objects. They were also discovered to be way out of our galaxy and that astronomers still do not truly understand what they really are. The only thing that we know about them is that produce 10 to 100 times more energy than our whole galaxy. ** **We still do not really know what these celestial beings are truly are, but most educated guesses lead to that quasars are actually super massive black holes in space. The light they produce is because of the matter that is sucked in the black hole, the matter spins faster and faster and friction takes its role and heats up the matter and makes the matter give off enormous amounts of light as well as other forms of radiations like x-rays. The black hole would eat up an entire sun a year. The matter would be then crushed to no existence and then deposited at the north and south poles of the black hole. Another explanation of what a quasar is that they are a very young galaxy at a very early stage of their life. We do not know how a galaxy evolves so this could be a possibility. **  http://www.seasky.org/cosmic/sky7a09.html#Top