Official U.S. Air Force: VIRIN
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Official U.S. Air Force: Off to space
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Official U.S. Air Force: Fill 'er up
NASA Goddard Photo and Video: Happy Halloween from NASA Goddard
NASA Goddard Photo and Video: Hubble Spies Spooky Shadow on Jupiter's Giant Eye (color)
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Mandlenkhosi: Then there was the sky
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Mandlenkhosi: Ossian's Folly
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Mandlenkhosi: Crowned
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vulture labs: Ghost in the Machine
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Jackpicks: Apgar Village - Montana
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Jackpicks: Waterton hilltop
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Jackpicks: Apgar Village - Montana
NASA Goddard Photo and Video: Comet Siding Spring Mars Flyby
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vulture labs: London
NASA Goddard Photo and Video: Hubble Finds Supernova Companion Star after Two Decades of Searching
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Von Wong: Nikon AW-1
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amitsrivastav2: Convict Lake, Sunrise
NASA Goddard Photo and Video: Australia
NASA Goddard Photo and Video: Spurting Plasma
NASA Goddard Photo and Video: Hanging Filament
NASA Goddard Photo and Video: Two X Flares in Quick Succession
NASA Goddard Photo and Video: Storm Cell Over the Southern Appalachian Mountains
NASA Goddard Photo and Video: Free-Air Gravity Map of the Moon
NASA Goddard Photo and Video: Puffing Sun Gives Birth To Reluctant Eruption
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Marty4650: Fairview Baptist
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GrizzlysGhost: Fire -n- Water
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GrizzlysGhost: The North Star
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GrizzlysGhost: Sunset In Glacier Country
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GrizzlysGhost: Flathead Valley Inversion
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GrizzlysGhost: Granite Park Chalet