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Apollo 17: The Crescent Earth
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An Analemma of the Sun
This week the equinox found the Sun near the middle.
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Equinox: The Sun from Solstice to Solstice
Today is an equinox, a date when day and night are equal.
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Birds During a Total Solar Eclipse
What do birds do during a total solar eclipse?
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The Longer Days
This persistent six month long exposure compresses the time from solstice to solstice (December 21, 2018 to June 16, 2019) into a single point of view.
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Sunset Analemma
The Sun reaches the northernmost declination in its yearly journey through planet Earth's sky.
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Astronomy Picture of the Day: Earthrise: A Video Reconstruction
About 12 seconds into this video, something unusual happens.
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Astronomy Picture of the Day: A Cold December Night
They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze
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Astronomy Picture of the Day: A Cold December Night
They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze
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Astronomy Picture of the Day: A Cold December Night
They say Orion always comes up sideways, and he does seem to on this cold December night. The bright stars of the familiar northern winter constellation lie just above the snowy tree tops surrounding a cozy cottage near the town of Ustupky in the Cze
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