http://en.wikipedia.org/wiki/Gamma_ray

http://science.hq.nasa.gov/kids/imagers/ems/gamma.html

http://www.answers.com/topic/gamma-ray

http://en.wikipedia.org/wiki/Gamma-ray_astronomy

http://www.pbs.org/wgbh/nova/gamma/spec_gamma.html

http://imagine.gsfc.nasa.gov/docs/introduction/gamma_information.html

http://www.answers.com/topic/gamma-ray-astronomy

http://www.astro.caltech.edu/~ejb/faq.html

http://imagine.gsfc.nasa.gov/docs/introduction/bursts.html

http://www.myspace.com/gmmaray