41.4 MB (7.6 MB compressed)
4646 x 3113 pixels
39.4 x 26.4 cm ⏐ 15.5 x 10.4 in (300dpi)
DAVID NUNUK / SCIENCE PHOTO LIBRARY DAVID NUNUK / SCIENCE PHOTO LIBRARY
Star trails. Star trails over the rusting wreck of a boat. Star trails are captured by long-exposure photography, in this case 10 hours. The lines of light are made by the relative movement of the stars through the night sky as the Earth rotates. The centre of the concentric trails (which lies below the horizon in this image) is the point in the sky directly above the earth's Celestial Pole, (South Pole in the southern hemisphere, North Pole in the northern hemisphere.) The colours of the trails reveal the variety of colours and distances from the Earth of the planets and stars. 25th Feb, 1993.
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