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51.0 MB (5.3 MB compressed)
4925 x 3619 pixels
41.7 x 30.7 cm ⏐ 16.4 x 12.1 in (300dpi)
DR FRED ESPENAK / SCIENCE PHOTO LIBRARY DR FRED ESPENAK / SCIENCE PHOTO LIBRARY
Optical photograph of M45, the Pleiades open star cluster. The brighter stars of the cluster are embedded in a distinctive blue halo, caused by their starlight reflecting off dust particles in the cold gas around them. Only 400 light years from Earth, the Pleiades consists of some 300-500 stars, six or seven of which ("the seven sisters") are visible to the naked eye. 10 Jan, 1986. 6-inch, f/4 RFT, 15 mins, Fuji 400-D pushed to 1600.
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