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Spooky alignment

The rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other

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Minor planet map

Dawn mission images create geological maps of Vesta

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Indonesian Islands Eclipse

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Philae results

Mission scientists share the first data from a comet's surface

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Comet coverage

Take a look back at the Philae lander's historic few days

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Uwingu Mars

Name a crater ... make an impact!

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Planet formation picture

ALMA reveals new detail in the planet-forming disk around a star

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Sky Guide 2015

Monthly observing guide to the planets, meteor showers, and more

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Sunny seas

Cassini catches bright sunlight reflecting off Titan's lakes

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Spooky alignment

The rotation axes of the central supermassive black holes in a sample of quasars are parallel to each other

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PICTURE OF THE DAYsee all »

The Seven Sisters

Two thousand years ago, the Pleiades (M45) was a constellation. Also known as the Seven Sisters, more modern celestial cartographers incorporated it into the constellation Taurus the Bull. (4-inch Takahashi FSQ-106EDX refractor, SBIG ST-8300 CCD camera, thirty-two 5-minute exposures, stacked)
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