Discusses the formation of the white dwarf and the role this star plays in the formation of a white dwarf supernovae.

Bite-size introduction to two scientists-Hubble and Lemaitre-who played key roles in formulating the theory of the origin of the universe known as the big bang. Includes an interactive timeline on which you can plot out the approximate...

If you look up at the sky on a clear night, you may see a red dot among the stars. This dot is Mars, named in ancient times after the Roman god of war. Although no one has ever visited this red planet, we know a lot about it. This site...

A cool fact sheet about Pluto including a place for students to enter their weight on Earth to convert it to what it would be on Pluto.