Astronomy Picture of the Day



Saturn's Infrared Glow

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Mammatus Clouds Over Mexico

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A Year of Spectacular Comets

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Rays from an Unexpected Aurora

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A Galaxy is not a Comet

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Geminids in 2007

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The Milky Way at 5000 Meters

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M51: Cosmic Whirlpool

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Jupiter's Rings Revealed

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Quadrantid Meteors and Aurora from the Air

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A Jupiter-Io Montage from New Horizons

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Hidden Galaxy IC 342 from Kitt Peak

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