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Дата изменения: Wed Jun 17 22:35:56 2015
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Поисковые слова: pleiades
M45: The <b style="color:black;background-color:#ffff66">Pleiades</b> Star Cluster
Astronomy Picture of the Day
    


M45: The Pleiades Star Cluster
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M45: The Pleiades Star Cluster
Credit & Copyright: Roberto Colombari
Explanation: Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as dusty as this. Perhaps the most famous star cluster on the sky, the bright stars of the Pleiades can be seen without binoculars from even the depths of a light-polluted city. With a long exposure from a dark location, though, the dust cloud surrounding the Pleiades star cluster becomes very evident. The above exposure took about 30 hours and covers a sky area several times the size of the full moon. Also known as the Seven Sisters and M45, the Pleiades lies about 400 light years away toward the constellation of the Bull (Taurus). A common legend with a modern twist is that one of the brighter stars faded since the cluster was named, leaving only six stars visible to the unaided eye. The actual number of Pleiades stars visible, however, may be more or less than seven, depending on the darkness of the surrounding sky and the clarity of the observer's eyesight.

APOD Retrospective: The Pleiades Star Cluster

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Based on Astronomy Picture Of the Day

Publications with keywords: pleiades - open cluster
Publications with words: pleiades - open cluster
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