ASTRON C12 Lecture Notes - Olympus Mons
14 Dec 2013
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Nucleus num of protons = num on table. Nuclear force strong force (neutrons + protons) Neutrons = 1up quark + 2down quarks. Quarks" properties were important when matter forms after the bb. Across the mw galasy 100,000 light years (v of light 186 m/s=300,000km/s) Billions of stars in space, held together by gravity, orbiting a common center. Star large, hot ball of gas (mostly h+he) difference from planets: produces energy. Planet spherical object that orbits a star . Shine by reflected light (but infra-red due to warmth) rocky icy. Moon any object that orbits a planet. Asteroids a small (1km) rocky object that orbits a star. Comets a dirty snow ball orbiting a star (comet"s tail evaporating gas) gas. Surf temperature - 470 c out of greenhouse effect! Ice caps on craters, polls. (mb had water 100bill. yrs ago) Biggest volcano in whole ss ocean beneath surface. Ch , n - rains( ), ch ice rocs!!
