A printable board game from NASA.

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

What is a black hole and how do we know it exists?(for K-4th graders)

Information about black holes and how we know they exist, links to glossary terms and a movie about a "Journey into a Blackhole."

Here you will find descriptions and MPEG movies that take you on trips to black holes and neutron stars. These movies are scientifically accurate computer animations using Einstein's General Theory of Relativity.

Fall into a black hole on a real free fall orbit. All distortions of images are real, both general relativistic from the gravitational bending of light, and special relativistic from the near light speed orbit.

This site was created by Mark O'Brien and John Chang for their end-of-the-year physics project during their junior year at Clackamas High School in Milwaukie, Oregon. Their assignment was to create an informative webpage for future physics students. The result is the black hole website you see here.

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.

Answers to black hole questions like "How big is a black hole?" ,"How do black holes evaporate?", and "What is a wormhole?".

Introduction to the types, formation, and environment inside and outside of black holes.