ASTRON 2B03 Lecture Notes - Redshift, 51 Pegasi, Exoplanet
25 Sep 2013
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Document Summary
General relativity more mass, more curved spacetime is. Spacetime tells matter how to move: as well as light light moves through curved space-time. Gr - all that newton did not predict. Quantum gravity combining large and small scales, in order to understand extreme things in the universe. Tides due to tidal forces differential gravity: prof standing gravitational pull different than her feet and head (tiny effect). If she stood close to black hole, it would be really strong and you would be stretched out. These differential forces have dramatic effects of earth: tides on earth due to moon"s gravity. Finding planets not in our solar system, don"t orbit about or sun. If you have nuclear burning, you are a star: you are not a planet. Finding planets around other stars is very difficult. Planets are way smaller and dimmer trying to see them is incredibly difficult.
