Logo for the Fermi Gamma-ray Space Telescope
Credit: NASA/Sonoma State University/Aurore Simonnet
2008-08-27
<a rel="nofollow" class="external free" href="http://fermi.gsfc.nasa.gov">http://fermi.gsfc.nasa.gov</a> (from Fermi Fact Sheet <a rel="nofollow" class="external text" href="http://fermi.gsfc.nasa.gov/ssc/library/support/Fermi_Fact_Sheet.pdf">PDF</a>)