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Diagram Showing the Stellar Life Cycle
19" x 25"
Diagram Showing the Stellar Life Cycle--Framed Photographic Print
Your Essential Brown Frame

Image showing the stages in the life and death of a star system and its cyclical nature At right we see a star exploding at the end of its life a supernova As the debris cloud expands it forms a diffuse nebula and joins the other gases in the interstellar medium Later due to turbulence and random motions in the interstellar medium dense knots appear regions that are denser than others bottom left Regions such as these undergo gravitational contraction and lead to the creation of protoplantetary discs and then planetary systems top When the star expires the whole cycle starts all over againMark GarlickScience Photo Library