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51.3 MB (16.1 MB compressed)
5184 x 3456 pixels
43.9 x 29.2 cm ⏐ 17.3 x 11.5 in (300dpi)
MIGUEL CLARO / SCIENCE PHOTO LIBRARY MIGUEL CLARO / SCIENCE PHOTO LIBRARY
Star trails over Noudar Castle. Time-exposure image of stars forming light trails in the sky over the church and tower of Noudar Castle (completed in 1307) in Noudar Park, Alqueva Dark Sky Reserve, Portugal. Star trails are created on long-exposure images by the Earth's rotation on its axis. The stars here include those from the constellation of Orion. Photographed in 2015.
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