NASA
Nasa: Imagine the Universe: Gamma Rays From Supernovae and Supernova Remnants
Astronomers use gamma decay to study the lives of the stars.
California Institute of Technology
Spitzer Science Center: Gamma Ray Burst
This space telescope image features a full-blown Gamma-Ray Burst first detected by a team of astronomers led by Peter Garnavich. In addition, a detailed textual overview explains various specifics of the picture.
NASA
Nasa: Imagine the Universe: Welcome to the World of Multiwavelength Astronomy!
This Imagine the Universe site provides an introduction into the multiwavelength universe and astronomy. Site provides graphics, links to a quiz, facts on this topic as well as teacher resources.