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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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A Solstice Night in Paris
The night of June 21 was the shortest night for planet Earth's northern latitudes, so at latitude 48.9 degrees north, Paris was no exception.
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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: Extraordinary Solar Halos
Welcome to the December Solstice, the first day of winter in planet Earth's northern hemisphere and summer in the south.
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Astronomy Picture of the Day: Equinox: Analemma over the Callanish Stones
Does the Sun return to the same spot on the sky every day at the same time? No.
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Astronomy Picture of the Day: Star Trails and the Bracewell Radio Sundial
Sundials use the location of a shadow to measure the Earth's rotation and indicate the time of day.
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Astronomy Picture of the Day: The East 96th Street Moon
A very full Moon rose over Manhattan's Upper Eastside on June 28, known to some as the Strawberry Moon.
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Astronomy Picture of the Day: Northern Lights and Noctilucent Clouds
Skies after the near-solstice sunset on June 17 are reflected in this calm lake.
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