NATS 1880 Study Guide - Final Guide: Rare Earth Hypothesis, Red Supergiant Star, Search For Extraterrestrial Intelligence
19 Mar 2016
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Document Summary
All stars form from the collapse of a gas cloud (made of hydrogen and helium) This gas cloud is never still (angular momentum); as it gets closer to the core it spins faster: a star is born when h begins to fuse to he in the core of a proto star. A black hole is an object who"s escape speed is greater than the speed of light. Planets will still continue to orbit around the black hole because of the its gravitational pull. First scheme ranked in prominence of dark lines in the spectrum: a, b, c . O, b, a, f, g, k, m. Our sun is a g- star (or g2) Mass is the most important property of a star, determining its surface temperature, luminosity and maximum life. More massive stars die quickly even though they have more expendable fuel.
