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View Full Version : Discussion: Earth Seen in Gamma Rays



Fraser
2005-Mar-31, 05:47 PM
SUMMARY: A NASA-funded researcher has created an image of the Earth as it would look if you had gamma ray detectors for eyes. Gamma rays are the most energetic radiation known in the Universe - billions to trillions more energetic than visible light - and people usually associate it with extreme environments like black holes and supernovae. The radiation in this image was captured over the course of seven years by the Compton Observatory, which orbited the Earth from 1991 to 2000.

View full article (http://www.universetoday.com/am/publish/earth_gamma_rays.html)

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antoniseb
2005-Mar-31, 06:17 PM
I've been looking forwad to GLAST being launched. Who knows what interesting Gamma Ray observations we've missed since Compton came down.

John L
2005-Mar-31, 08:20 PM
I found it interesting the the source of the gamma rays was cosmic ray impacts with the atmosphere. The image is kinda dull, though.

sleepingbear
2005-Apr-01, 01:17 AM
What are we "seeing"? Can the various pixel emitters be identified? Are they on the surface or below - and if below, how far down?