Over a blanket of snow covering California's southern Sierra Nevada mountains, NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) conducts a test mission with the sliding door over its telescope cavity fully open.
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Over a blanket of snow covering California’s southern Sierra Nevada mountains, NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) conducts a test mission with the sliding door over its telescope cavity fully open.April 14, 2010
NASA Photo / Jim Ross