ASTR 100 Chapter Notes - Chapter 1: Local Group, Virgo Cluster, Falsifiability
Document Summary
Chapter 1 astronomy 100 class notes: understand the diff between planets, stars, the solar system, galaxies, the local. Group of galaxies and galaxy cluster, the virgo cluster. Earth: 10^7 m (~6,000 mi), light travel time is 3x10^-2s. orbiting under the influence of gravity around a star called the sun. Sun: middle-aged star and seems extraordinary only because of its importance to us within our own solar system. Solar system: consists of eight planets: mercury, venus, earth, mars, It also contains many smaller bodies, such as dwarf planets, asteroids, and comets. All of these objects are bound to the sun by gravity. Milky way galaxy: a flattened collection of stars, gas, and dust. The milky way: is a member of a collection of a few dozen galaxies called the local group. Most galaxies in this group are much smaller than the.
