Astronomy

Astronomy is a study of events that take place outside of the Earth's atmosphere, and astrophyics is the part of the study of astronomy that deals with the physical aspects of the universe as a whole.

Stars

 * Stars
 * Black hole
 * Flare star
 * Hypergiant
 * Negative star mass
 * Neutron star
 * Pulsar
 * Red dwarf
 * Red giant
 * Spectral class
 * Supergiant
 * White dwarf
 * Yellow dwarf

Planets and other bodies

 * Planets, planetoids, asteroids, and moons
 * Planetary classification
 * Tidal locking

Other objects

 * Nebulae and gaseous anomalies
 * Nebulae classifications

Astronomers

 * Isaac Newton