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Mauna Kea observatories. View across the summit of the volcano Mauna Kea (in Hawaii, USA) showing its cluster of astronomical observatories. In the foreground are, from left to right, the site of the SubMillimetre Array (SMA), the James Clerk Maxwell Telescope (JCMT) and the CalTech Submilli- metre Observatory (CSO). On the ridge in the back- ground are (left to right) the Subaru Telescope, Keck 1, the NASA Infrared Telescope Facility (IRTF), the Canada-France-Hawaii Telescope (CFHT), Gemini, the University of Hawaii 88-inch Telescope (UH88), the United Kingdom Infrared Telescope (UKIRT) and the University of Hawaii 24-inch Telescope, the first to be placed on Mauna Kea. (KEYSTONE/SCIENCE PHOTO LIBRARY/MAGRATH PHOTOGRAPHY)