ASTR 120 Chapter Notes - Chapter 1: Milky Way, Virgo Supercluster, Supercluster
Document Summary
1 a modern view of the universe. *our cosmic address (our address in the vast universe) = Earth -> solar system -> milky way galaxy -> local group -> local supercluster -> *solar system consists of the sun, planets, their moons, rock asteroids, icy comets. *milky way galaxy huge, disk shaped collection of stars containing our solar system. Relatively large *galaxy with more than 100 billion stars. Galaxy a great island of stars in space containing between a few hundred million and a trillion or more stars. Our solar system is located about 2/3 from the center. *local groups contain many other galaxies within. Our local group has 40 galaxies within (ours being the 2nd largest) Our local group is located on the edge of our supercluster. *universe the total sum of all matter and energy. *observable universe the part of the universe that can be seen from earth.
