The Universe
The distance which light travels in a year
Light Year
Our solar system is located in this galaxy
Milky Way
The parts of the star
core, chromosphere, and photosphere
Reaction that powers stars
Nuclear fusion
The third planet from the sun
There two things are needed to determine the absolute magnitude of a star
apparent magnitude and distance from Earth
Groups of galaxies
Clusters
Planets that are generally larger and farther from the sun
Gas Giants
The three types of stars
giant stars, white dwarfs, super giants
Explains the expansion of the universe
The Big Bang Theory
Brightest object seen from Earth in our solar system
sun
Measurement used to compare the size of other stars
Solar radius
2 Shapes of the galaxies
Irregular, Spiral, Elliptical
Put the solar systems's planets in order based on distance from the sun. Start with the nearest one
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
This is used to calculate the distance of stars
staller parallax