Dawn at Blyth beach huts in Northumberland, with the prospect of warm weather over the coming weekend on Friday, October 8, 2021. (Photo by Owen Humphreys/PA Images via Getty Images)

“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)

A woman takes a picture of a sculpture depicting servant Puck from Shakespeare's comedy “A Midsummer Night's Dream” during a flower festival in Pakruojis, Lithuania on August 14, 2021. (Photo by Ints Kalnins/Reuters)

A pelican investigates a fallen ketchup bottle outside a cafe in St James’s Park in London, England on October 9, 2025. The species has lived there for hundreds of years and remain a popular sight for visitors. Introduced in 1664 as a gift from the Russian ambassador, about 40 pelicans have since made the park their home. The bottle was safely retrieved from the pelican. (Photo by Stephen Chung/Alamy Live News)

A man flies a kite on the Bund while buildings of Pudong's Lujiazui financial district stand across the Huangpu River as the sun rises in Shanghai, China, on Friday, October 2, 2015. (Photo by Qilai Shen/Bloomberg)

Participants jump into the water during the 114th edition of the Copa Nadal (Christmas Cup) swimming race in Barcelona's Port Vell on December 25, 2023. The traditional 200-meter Christmas swimming race gathered around 300 participants on Barcelona's Port Vell (old harbour). (Photo by Josep Lago/AFP Photo)

A woman reacts after she mades a wreath of flowers during the celebrations of the Kupala night in Pyrohiv, near Kiev, on July 6, 2021. During the celebration, an ancient slavic ritual related to the summer solstice, people wear wreaths, jump over fires and bathe naked in rivers and lakes. (Photo by Sergei Supinsky/AFP Photo)

A man rides a bicycle by a graffiti under the “Old Sava bridge” over Sava river in Belgrade, Serbia, Wednesday, May 19, 2021. (Photo by Darko Vojinovic/AP Photo)