American actress and singer Bella Thorne keeps covered during Paris Fashion Week in the last decade of September 2024. (Photo by bellathorne/Instagram)

Harrison Ford attends the 2025 Screen Actors Guild Awards at Shrine Auditorium and Expo Hall on February 23, 2025 in Los Angeles, California. (Photo by Taylor Hill/FilmMagic)

Singer Rita Ora enters her hotel on April 27, 2017 in New York City. (Photo by MEGA)

Paris Jackson, left, and Caroline D'Amore kiss in the press room at the MTV Video Music Awards at The Forum on Sunday, August 27, 2017, in Inglewood, Calif. (Photo by Jordan Strauss/Invision/AP Photo)

“Contrails (short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals”. – Wikipedia

Photo: An airplane leaves a vapor trail as it flies in front of he moon on January 17, 2007 above Hanover, Germany. (Photo by Alexander Hassenstein/Getty Images)

Icelandic horses graze on a meadow at a stud farm in Wehrheim near Frankfurt, Germany, Monday, September 1, 2025. (Photo by Michael Probst/AP Photo)