Astronomy
The universe from your backyard.
The sky, gravity, light, stars, galaxies, and cosmology.
Unit 1
The sky
Celestial motions and the seasons
Unit 2Orbits & gravity
Kepler's laws and Newtonian gravity
Unit 3Light & telescopes
Radiation, spectra, and observatories
Unit 4The solar system
Planets, moons, and solar system formation
Unit 5Stars
Stellar properties and the H-R diagram
Unit 6Stellar evolution
Star birth, death, and black holes
Unit 7The Milky Way
Galactic structure and interstellar matter
Unit 8Galaxies
Galaxy types, clusters, and active galaxies
Unit 9Cosmology
The Big Bang, expansion, and dark matter