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M35 open star cluster, optical image. M35 (upper left) contains a couple of hundred stars, is some 110 million years old and lies about 2800 light years away in the constellation Gemini. Also seen is a more distant open star cluster, NGC 2158 (lower right), which is some 16,000 light years distant and about 10 times older. Image taken in January 2003 by the Canada-France-Hawaii Telescope. (KEYSTONE/SCIENCE PHOTO LIBRARY/CANADA-FRANCE-HAWAII TELESCOPE)