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: Supernova Remnants and Neutron Stars
I saw a photo designated Cas A that is labeled as a 320 year old
event from a location 10,000 light years away. I was wondering
how the event could have happened 320 years ago and the
radiation that produced the image arrive in time for me to view
it. Have I misread the caption?
We have a special section explaining the age of Cas A. Try
http://chandra.harvard.edu/photo/0237/age.html
