Educational sequence suitable for high school students.

A review of the theory and history of black holes.

Articles about and photos of black holes.

Learn about the amazing phenomenon that is a black hole.

A brief overview of black holes, information about the discovery of Cygnus X-1, and a short list of links relating to black holes and astronomy.

Offers a non-technical discussion about black holes and neutron stars. Topics include what they are, how they are form, and how to detect them.

A NASA article describing the likelihood that a black hole can be found at the center of the Milky Way Galaxy.

Pictures, diagrams, and explanations of black holes in an easy to understand format. Good site for someone doing research on black holes for a report or project.

Interactive activity designed to teach about black holes.

Black holes are some of the most amazing objects in the universe -- they may even hold many galaxies together! Learn all about them!