Sunday, October 24, 2010

APOD 1.8


The picture above is the most advanced gamma-ray map of the universe.  It was taken by the Fermi mission's Large Area Telescope (LAT) over a time frame of three months in 2008.  Gamma radiation has far more energy than visible light, and it is observed with different technology.  Although we are blind to it with the naked eye, it is found all over the universe and teaches us a lot about the places we are unable to reach.  Photos taken in wavelengths other than visible light are given false color, such as in this X-Ray picture of a globular star cluster, 47 Tuc. The labeled items are the top ten sources of gamma radiation in the universe.

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