Star trails over Roman ruins. Time-exposure image of stars forming light trails behind the ruins of the southern gate tower of the Roman city of Ammai

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Star trails over Roman ruins. Time-exposure image of stars forming light trails behind the ruins of the southern gate tower of the Roman city of Ammaia, Portugal. Star trails (here circling the northern celestial pole) are created on long-exposure images by the Earth's rotation on its axis. Photographed in 2015.

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Size: 3648px × 5472px
Photo credit: © MIGUEL CLARO/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, 2015, alqueva, ammaia, antiquity, archaeological, archaeology, archeology, architectural, architecture, astronomical, astronomy, astrophotography, building, castle, celestial, circles, circular, classical, concentric, countryside, dark, europe, european, exposure, gate, historical, history, long, long-exposure, night, north, northern, optical, pole, portugal, portuguese, reserve, roman, ruin, sky, star, time, time-exposure, tower, trail, trails, visible