ASTR 101 Lecture Notes - Lecture 24: Space Shuttle, Runaway Greenhouse Effect, Outer Core

• School: University of Victoria
• Department: Astronomy
• Course: ASTR 101
• Professor: Travis Martin

Document Summary

Atmosphere interferes with observing cosmos, we want to understand the universe to better understand ourselves, to understand how earth is affected by our solar system. If mercury and venus reversed, they would be habitable. Divide mass by vol and get density of. Compression as you move further towards the core - gravity. Seismic readings of earth has led to a lot of our understandings. Only way to get a distinct seismometer reading by a difference between inner and outer cores. Mechanism that pushes lighter gases out of solar system. Digging down into earth"s core to obtain heat from nuclear reactions - this keeps earth warm. Things that are more dense will sink in liquid. Molten layers in the earth do not necessarily allow solid things to sink, but do allow denser objects to sink. Oxygen in these quantities is unique to earth (but oxygen is not unique).