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: Dark Matter

Q:
Is it possible for the existence of an 'anti-dark matter?' It was long predicted for the existence of anti-matter in theory so it seems plausible to me.

A:
It depends on what dark matter is. If it is slow moving dark particles as many theorists predict, I would assume there would be anti-particles. However, we would then have to explain why there are so many more dark matter particles than anti-dark matter particles (the same problem we are faced with for matter and anti-matter) or explain where the anti particles are hidden.

For more information on the dark matter mystery, please visit the X-ray Field Guide on dark matter:
http://chandra.harvard.edu/xray_astro/dark_matter.html

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