December 1, 2002
Another birthday means another year in which the universe got to experience itself through your particular combination of wonder and will.
The Pleiades Star Cluster
Birthday · December 1, 2002
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APOD published December 1, 2002. Credit: AAO. A publication-date match, not a photo taken on your date. Independent of NASA.
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.
Image credit: AAO