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
In Chandra Digest G54.1, reference is made to "a disc of matter
and antimatter" surrounding SNR G54.1+ 03. How is mutual annihilation avoided?
Mutual annihilation of matter and anti-matter almost certainly occurs, but
further out in the nebula. The disk is a flow pattern that is continually
resupplied with matter and antimatter electrons created near the surface
of the neutron star by the interaction of photons with the extremely strong
magnetic field there.
