Use this site to find out what is a black hole in space and try an experiment.

This article describes how black holes may provide clues to the possibility of time travel and parallel universes.

Learn about black holes in our solar system. What are they? How are they formed? What is their structure? The brief, to the point text makes this site most appropriate for the younger researcher.

Visualization that uses the Schwarzschild metric, showing the orbit light travels near a black hole.

Simulation exploring the behavior of particles as they approach a black hole using Schwarzschild coordinates.

Article reports on a recent record-breaking observation in space - the bright gamma-ray burst ever recorded.

Apply the Schwarzschild metric to an object orbiting about a black hole. Manipulate the energy and angular momentum of the orbiting particle and observe the results.

A review of the theory of how black holes radiate. Understand the explanation of the mechanism responsible for Hawking radiation.

Apply the Schwarzschild metric to the paths light travels when it radiates in every direction near a black hole. Adjust the position of the light source and observe the effective potential of the paths.

This is a brief explanation of black holes. Click the starred words to see interactive flashcards with more information.

NASA provides an introduction to black holes for younger students. Features include vocabulary words linked to a glossary of terms and a printable version.

The path of cannonballs fired near a black hole are computed using the Schwarzschild metric and presented in this visualization, allowing for study of the theory of general relativity. The cannon's angle and the number and speed of the...

Explore the mysteries of the black hole! Cool Cosmos presents the answers to the most frequently asked questions about this phenomenon. Kids can click on the easy to use question links to find out more.

Learn about a storm errupting in the Teacup Galaxy involving the explosion of a supermassive black hole.

A NASA scientist, Dr. Sten Odenwald, answers many students' questions. Topics include planets, galaxies, black holes, the origin of the universe, and common misconceptions about space.

Visualization that uses the Schwarzschild metric, showing the path light travels near a black hole depending on the angle of its initial launch.

Visualization using the Schwarzschild metric, showing the path light travels near a black hole. Adjust the impact parameter and observe effective potential well of the light particle.

Visualization using the Schwarzschild metric, showing the behavior of an object as it orbits about a black hole.

Picture of a black hole.

A simulation that uses the Kerr metric to show the distribution of light photon trajectories when near a black hole that rotates. Accompanied by explanatory documentation.

Using the Kerr metric this simulation illustrates the directions of light emitted from an equatorial plane near a rotating black hole.

Consider general relativity with this simulation using Kerr metric of orbits in an equatorial plane near a rotating black hole.

Using Kerr metric this simulation illustrates the path of light emitted from the equatorial plane near a rotating black hole.

Using the Schwarzchild metric this simulates the path of light from a black hole also identifying specific time and angle of the light.