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

Q:
What kind of radiation is used to gather information on black holes, and how?

A:
The Chandra X-ray Observatory and other X-ray telescopes gather information on black holes by studying the X-radiation from hot matter swirling toward a black hole. Gamma ray telescopes cannot pinpoint the sources as accurately, but can obtain important information about even higher energy radiation from matter in the vicinity of black holes. See our listing under "Black Holes" in the Field Guide at http://chandra.harvard.edu/xray_sources/black_holes.html

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