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APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
The Pleiades Star Cluster
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 .
| Date | February 27, 2000 |
|---|---|
| Credit | Credit & Copyright: David Malin ( AAO ), AATB , ROE , UKS Telescope |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |