What is a light-year?
What determines a star's color?
What is the Hertzsprung-Russell (H-R) diagram?
What type of galaxy is the Milky Way?
What is a constellation?
Name the closest star to Earth (besides the Sun).
What is a nebula?
What is a red giant?
What is a supernova?
What stellar remnant can form after a supernova if the core is massive enough?