TONY & DAPHNE HALLAS / SCIENCE PHOTO LIBRARY TONY & DAPHNE HALLAS / SCIENCE PHOTO LIBRARY
Lowell Observatory. View of the dome of the 42-inch (107-centimetre) telescope of the Lowell Observatory at Anderson Mesa near Flagstaff, Arizona, seen against a starry background. The Lowell Observatory was founded in 1894 by Dr Percival Lowell. It now operates eight telescopes in the Flagstaff area and one in Western Australia.
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