A step-by-step description of how an eclipse occurs and the differences between a lunar and a solar eclipse.

Describes the characteristics and movements of the planet Neptune and how we found out about it.

Briefly describes beliefs of astronomers from ancient times to 1609, when Galileo's discoveries through the telescope gave birth to modern astronomy.

Examines the origins, functions, uses, and discoveries of rockets, space probes, and satellites.

Provides an insider's view of our own Milky Way and discusses the nature and behavior of galaxies in general.

Explains why the moon changes from crescent to full moon every twenty-nine and one-half days.

Discusses the origins and characteristics of our universe, focusing on the nature of stars.