Photo Agency - Astronomy - Space - Nature
> North and South celestial pole star trails
North and South celestial pole star trails
author: David Malin Images/Novapix
reference: a-pas01-10008
Image Size 300 DPI: 40 * 24 cm
As the earth spins beneath the stars they appear to move across the sky from east to west. However, if one looks in the direction of the celestial poles, the stars appear to circle a single point on the sky. This is the position of the earth's axis of rotation projected into space. These pictures were made from Siding Spring Observatory in Australia, and from the La Plama Observatory in the Canary Islands, so the pivotal points are about 30 degrees above their respective horizons, which reflects their geographical latitudes.
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