An index of Astronomy and Astrophysics articles on Memory Alpha. Astrophysics is the part of astronomy that deals with the physics of our universe, while astronomy is the study of all events outside Earth's atmosphere.
Stars
- Negative star mass
- Spectral class
- Luminosity class
- Hertzsprung-Russell diagram
- Variable stars
Planets
Other Objects
- Nebulae classifications
- List of Astronomical Objects