• Stars
The sun is a star.
Kinds of stars (by size): giants, dwarfs, pulsars
Supernova; black holes
Apparent movement of stars caused by rotation of the earth
Constellations: visual groupings of stars, for example, Big Dipper, Orion
Astronomical distance measured in light years
• Galaxies
The Milky Way is our galaxy; the Andromeda Galaxy is closest to the Milky Way.
Quasars are the most distant visible objects (because the brightest).