An overview of the Chandra mission and goals, Chandra's namesake, top 10 facts.
Classroom activities, printable materials, interactive games & more.
Overview of X-ray Astronomy and X-ray sources: black holes to galaxy clusters.
All Chandra images released to the public listed by date & by category
Current Chandra press releases, status reports, interviews & biographies.
A collection of multimedia, illustrations & animations, a glossary, FAQ & more.
A collection of illustrations, animations and video.
Chandra discoveries in an audio/video format.
Q&A: Black Holes
What do the team at Chandra think of the alternative argument for "Black
Hole" type phenomena such as "Gravistars" as described in
Scientific American?
Alternative theories for objects as bizarre as black holes are usually worth considering. One challenge for this alternative is to explain Chandra observations that indicate the existence of an event horizon. See, for example,
http://chandra.harvard.edu/photo/2001/blackholes/index.html
