APOD
Star Trails in Northern Skies
September 12, 1998David Malin
About This Image
As the Earth spins on its axis, the sky seems to rotate around us. This motion produces the beautiful concentric trails traced by the stars in this time exposure of the night sky. In the middle of the picture is the North Celestial Pole (NCP), easily identified as the point in the sky at the center of all the star trail arcs. The very short bright trail near the NCP was made by the star Polaris, commonly known as the North Star.
On This Day in Space History
On September 12, 1962, President Kennedy delivered his famous "We choose to go to the Moon" speech at Rice University.
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