'Death Spiral' Around a Black Hole Yields Tantalizing Evidence of Event Horizon Death Spiral Around a Black Hole Yields Tantalizing Evidence of Event Horizon. NASA's Hubble Space Telescope may have, for the first time, provided direct evidence for the existence of black holes by observing the disappearance of matter. http://space.about.com/cs/nasanews/a/2001_03stsci.htm

A Mystery in the Galactic Center [ Teens/Mature Teens ] - A NASA article describing the likelihood that a black hole can be found at the center of the Milky Way Galaxy. (February 21, 2002) http://science.nasa.gov/headlines/y2002/21feb_mwbh.htm?list79629

Anatomy of A Black Hole [ Teens/Mature Teens ] - Educational sequence suitable for high school students. http://archive.ncsa.uiuc.edu/Cyberia/NumRel/BlackHoles.html

Ask a High-Energy Astronomer: Black Holes [ Mature Teens ] - Commonly-asked questions, and a way to ask an astronomer a question about black holes. http://imagine.gsfc.nasa.gov/docs/ask_astro/black_holes.html

Black Hole FAQ [ Teens/Mature Teens ] - Answers to black hole questions like 'How big is a black hole?' ,'How do black holes evaporate?', and 'What is a wormhole?'. http://cosmology.berkeley.edu/Education/BHfaq.html

Black Holes [ Teens/Mature Teens ] - Information about black holes and how we know they exist, links to glossary terms and a movie about a 'Journey into a Blackhole.' http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level2/black_holes.html

Black Holes [ Kids ] - What is a black hole and how do we know it exists?(for K-4th graders) http://starchild.gsfc.nasa.gov/docs/StarChild/universe_level1/black_holes.html

Black Holes and Neutron Stars [ Teens/Mature Teens ] - 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. http://www.eclipse.net/~cmmiller/BH/blkmain.html

Black Holes to Blackboards-God Divided by Zero [ Teens/Mature Teens ] - Laying your hands on a black hole is hard (and dangerous) to do, but there are ways to understand these objects and avoid the pain of dimension-bending. http://128.241.173.3/pubs/mercury/9802/lockwood.html

Falling into a Black Hole [ Teens/Mature Teens ] - 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. http://casa.colorado.edu/~ajsh/schw.shtml

Howstuffworks "How Black Holes Work" [ Kids/Teens/Mature Teens ] - Black holes are some of the most amazing objects in the universe -- they may even hold many galaxies together! Learn all about them! http://www.howstuffworks.com/black-hole.htm

HubbleSite - NewsCenter Archive [ Teens/Mature Teens ] - Articles about and photos of black holes. http://hubblesite.org/newscenter/newsdesk/archive/releases/category/exotic/black%20hole/

Jillian's Guide to Black Holes [ Teens/Mature Teens ] - Introduction to the types, formation, and environment inside and outside of black holes. http://www.gothosenterprises.com/black_holes/

Naked Singularity [ Teens/Mature Teens ] - 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. http://www.rdrop.com/users/green/school/

No Escape: The Truth about Black Holes [ Teens/Mature Teens ] - Interactive activity designed to teach about black holes. http://amazing-space.stsci.edu/resources/explorations/blackholes/lesson/index.html

Numerical Relativity Movies [ Teens/Mature Teens ] - Virtual reality and informational movies on black holes. This site is associated with the National Center for Supercomputing Applications(NCSA), and is for students in middle school and above. http://archive.ncsa.uiuc.edu/Cyberia/NumRel/MoviesEdge.html

The Black Hole at the center of our Galaxy [ Teens/Mature Teens ] - About the 2004 discovery that the center of our galaxy holds a black hole 3.7 million times heavier than the Sun http://www.phy6.org/stargaze/Sblkhole.htm

The Space Place: Fall into a Black Hole [ Kids/Teens ] - A printable board game from NASA. http://spaceplace.jpl.nasa.gov/en/kids/svlbi_do1.shtml

Virtual Trips to Black Holes and Neutron Stars [ Teens/Mature Teens ] - 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. http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html