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Astronomy Picture of the Day: Comet Wirtanen Passes by the Earth
Today Comet Wirtanen passes by the Earth. The kilometer-sized dirty snowball orbits the Sun every 5.4 years, ranging as far out as Jupiter and as close in as the Earth.
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The Conjunction of the 46p/wirtanen comet, the hyades cluster and the Pleiades cluster
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Astronomy Picture of the Day: December's Comet Wirtanen
Coming close in mid-December, Comet 46P Wirtanen hangs in this starry sky over the bell tower of a Romanesque church.
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Astronomy Picture of the Day: Highlights of the North Winter Sky
What can you see in the night sky this season? The featured graphic gives a few highlights for Earth's northern hemisphere.
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Astronomy Picture of the Day: Comet 46P/Wirtanen
Periodic Comet 46P/Wirtanen is now the brightest comet in the night sky, but too faint to be seen by eye.
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