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No Cure for the Summertime Blues -- Ten Trillionths of Your Suntan Comes From Beyond Our Galaxy
Posted by Guy Pirro on 8/20/2016 10:09 AM
Lie on the beach this summer and your body will be bombarded by about one sextillion photons of light per second. Most of these photons originate from the Sun. But a very small fraction have traveled across the Universe for billions of years before ending up on your skin. Astronomers have now accurately measured the light hitting the Earth from outside our galaxy over a very broad wavelength range and it amounts to about only ten trillionths of your suntan.
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