Leonid meteors Optical timeexposure image of Leonid meteors streaks and star trails curved tracks over trees Meteors shooting stars are tiny dust particles which enter the Earths atmosphere at high speeds They are heated by air resistance making them visible as streaks of light The Leonid shower occurs annually for about days around th November when the Earth crosses the debris produced by the comet Tempel Tuttle P Star trails are produced on long exposure photographs by the apparent motion of the stars caused by the Earths rotation The meteors all appear to come from one point in the sky radiant centre right Photographed in