1StarLifeCycle

media type="custom" key="3855659" =media type="custom" key="3479376" = = = = = = = = = = Life Cycle of Stars =

[[image:supernova.jpg width="319" height="240" align="right"]] Basic Description:
Stars are the basis of our life and its because of their heat and light. They are also pleasant to look at.

Life cycle basics:
Stars start out as nebulae and protostars. As they age, they become either high mass, or low mass stars. After the Protostar stage, they become main sequence stars like our sun. They later become either a Red Giant, or a Red Super Giant. The Red Giant later becomes a planetary nebula then dies into a white dwarf after using up all of its "fuel". The Red Super Giant goes on to become a Supernova. The supernova can become either a neutron star or a black hole. 

Low mass stars are from a Nebula and as they grow, they become Protostars. the Protostars mature into main sequence stars, like our sun. at the end of the main sequence, the star expands massively into a Red Giant. The Red Giant later burns out into a small ball of burning gas called a White Dwarf. The WhiteDwarf then begins to dim, turning itself into a Brown Dwarf, and later a Black Dwarf.

Massive stars also start off as a nebula, and become a massive star. The massive star goes through the Protostar stage, and also the main sequence stage. The main sequence then expands into a Red Super giant. The Super giant later explodes into a supernova that can later either become a Neutron star, or a Black Hole.

Facts:

 * Our sun is half dead
 * All stars start off as nebulae
 * Super Novas form black holes
 * There are either low mass, or high mass stars
 * Stars can either explode, or just burn out

Resources:
"**red giant star**." __Encyclopædia Britannica__. 2009. Encyclopædia Britannica Online. 12 Mar. 2009 <[|**http://www.britannica.com/EBchecked/topic/494266/red-giant-star**]>.

Astronomy,patrick moore, guiness publishing ltd, enfield.

en.wikipedia.org/wiki/

