December 6 2013
Gamma-Ray Earth and Sky
This picture is incredible because of the vivacious colors that are shown. Each color is lined in a way so that you can see where one color ends and the other begins. Earth is the brightest source of gamma rays, which is the most energetic form of light. Gamma-rays from Earth are produced when high energy particles, or cosmic rays, crash into Earth's atmosphere. Our ozone layer blocks that harmful rays, but the gamma rays still dominate this picture of Earth and are present when viewed. The yellow color is the highest intensity of gamma rays.
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