The Fermi Gamma-ray Space Telescope recently produced a map of the night sky. Out of 1873 new sources, nearly 600 were complete mysteries. In today's story from Science@NASA, researchers speculate on the nature of the mystery objects--including the possibility that they are made of dark matter.
FULL STORY at http://science.nasa.gov/
A video version of this story is available at http://www.youtube.com/watch?
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