Earth Sciences 1086F/G Study Guide - Final Guide: Murchison Meteorite, Arecibo Message, Galilean Moons
9 Apr 2014
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Document Summary
Caused us to readjust many of the theories we knew from previous data about venus. Determined that large volumes of the atmosphere are escaping into space: 23 spacecrafts have flown past or orbited venus and over a dozen have landed on the surface. Orbital path lies almost in the same plane as earth"s: commonly called earth"s twin, rotation appears retrograde (clockwise), but only because it was knocked over by large impact, very slow rotation (243 earth days) Slowest spinning object in the known universe: no satellites, small magnetic field produced by atmosphere interaction with solar wind, winds at the surface are relatively gentle and faster winds are higher up, surface. Relatively few impact craters and very few small impact craters; they are all medium to huge (result of the dense atmosphere, small objects just burn up in it) Craters that can be seen appear young, rarely filled with lava, indicating there were formed after a recent" major volcanic activity.
