Astronomy 1021 Chapter Notes - Chapter 7: Tharsis, Lunar Soil, Valles Marineris
21 Nov 2017
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1: volcanism, tectonic forces, erosion: breakdown//build up. Ex with a river delta, the rives brings stuff with it and then it gets build up. Where weather and erosion is allowed to happen. Further from earth"s surface, the atmosphere gets thinner and thinner. We need green house gasses that will aid in having the planet warm. A large 1 billion year old terrestrial planet will have both a magnetic eld and atmosphere. Note 1 billion year old earth is still young, meaning that there is still liquid in the core, and the charged particles will cause a magnetic eld. Mercury is 40% larger than the moon. The lunar soil will cause your prints to stay there for a long time. The only way they can be removed shortly is if a micro meteorite erodes on that location. You can see that there are lots of small impacts.
