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Astronomy - Deep Spa

Big Bang Theory The universe was formed from an initial explosion
Red Shift Light moving away from the observer is pulled, making wavelengths longer.
Blue shift Light moving toward the observer is compressed, making wavelengths shorter
Age of the Universe 13 billion years
Age of the solar system and earth 4.5-5 billion years
Luminosity Brightness of stars as compared to our star (Sun)
Galaxy Organized group of billions of stars
Milky Way Galaxy The galaxy our solar system is in
spiral galaxy shape of the milky way
Main Sequence stars Stars fusing hydrogen into helium; healthy stars
Red Giant stars Dying stars that are fusing helium
White dwarf stars Remnants of red giant stars - almost dead
supernova explosion of a blue supergiant star; can form neutron stars or black hole
Created by: mrsflower