AS101 Study Guide - Wilkinson Microwave Anisotropy Probe, Angular Diameter, Mythbusters

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23 Apr 2014
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Understand how all the mass and energy in the universe is divided up. Identify which objects reside within the different levels of structure. Everything we can possibly see is a tiny fraction. Massive ball of glowing gas that generates energy through nuclear fusion. Indirect source of almost all energy on earth. Over 900 planets confirmed to be orbiting other stars. Thousands of candidate exoplanets, observed by kepler space telescope. Ice and rock = orbit around saturn (ring) Asteroid: a small, rocky object orbiting a star. Comet: a small, icy object that orbits the sun. Studying of these things can help in studying how the solar system came to be. A large system of dark matter, stars, gas and dust, all bound together by their combined gravity. Galaxy would not be able to exist with gravity alone. Raw materials for new stars from previous generations. A group of galaxies (a few dozen up to thousands) all held together gravitationally.

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