AST101H5 Study Guide - Midterm Guide: Equinox, Lunar Eclipse, Celestial Pole
Document Summary
300 000 times larger than the earth. Part of the milky way which is part of the local group which is part of the virgo supercluster which is part of the great attractor region which is part of the universe. Things happen in the universe very slowly. Strongest cus it acts in one direction. A model used to help us understand the night sky. The model is a dome that seems to stretch to where the sky meets the ground along a horizontal circle that we call the horizon. Ancient people noticed stars formed fixed patterns on the celestial sphere. All stars move through space, but as seen on earth, their positions change very slowly, taking tens of thousands of years to make any notable shifts. Daily motions of the night and stars. Stars rise along the east horizon, and set along the western horizon, just like the sun.
