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Explanation: It is the most famous star cluster on the sky. The Pleiades can be seen without binoculars from even the depths of a light-polluted city. Also known as the Seven Sisters and M45, the Pleiades is one of the brightest and closest open clusters. The Pleiades contains over 3000 stars, is about 400 light years away, and only 13 light years across. Quite evident in the above photograph are the blue reflection nebulae that surround the bright cluster stars. Low mass, faint, brown dwarfs have recently been found in the Pleiades.
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NASA Web Site Statements, Warnings, and Disclaimers
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 - M 45 - open cluster
Publications with words: pleiades - M 45 - open cluster
See also:
- APOD: 2024 December 9 Á Pleiades: The Seven Sisters Star Cluster
- APOD: 2024 October 29 Á NGC 602: Stars Versus Pillars from Webb
- APOD: 2024 September 29 Á Seven Dusty Sisters
- APOD: 2024 September 3 Á Quarter Moon and Sister Stars
- NGC 7789: Caroline s Rose
- APOD: 2024 July 2 Á NGC 602: Oyster Star Cluster
- The 37 Cluster