via Tumblr http://bit.ly/1SQn2UY Fermi’s Gamma-ray Moon via NASA http://go.nasa.gov/21kN71O
Fermi’s Gamma-ray Moon via NASA http://go.nasa.gov/21kN71O
via Tumblr http://bit.ly/1SQn2UY Fermi’s Gamma-ray Moon via NASA http://go.nasa.gov/21kN71O
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