ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY ANN RONAN PICTURE LIBRARY / HERITAGE IMAGES / SCIENCE PHOTO LIBRARY
Constellation of the Pleiades (Seven Sisters), 1908. Photographed with the 36 inch Crossley reflector at the Lick Observatory, California, USA. The Pleiades, 380 light years distant from Earth, is an open cluster of young stars. The seven brightest stars are easily visible with the naked eye, but the cluster actually consists of hundreds of stars. From The Publications of the Lick Observatory Vol VIII. Sacramento, 1908).
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