STEPHEN BURT / SCIENCE PHOTO LIBRARY STEPHEN BURT / SCIENCE PHOTO LIBRARY
Timelapse of contrail clouds moving across the sky in the morning in summer over a landscape in Berkshire, UK. Contrail clouds form from condensation trails produced by aircraft engines. Depending on the atmospheric conditions, the trails can persist for several hours and widen to resemble natural cirrus or altocumulus clouds. Filmed from 10:02 to 10:27 (25 minutes) on 15 July 2013.
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