Posted by B. Thomas (Arlington, Texas, United States) on 21 March 2018 in Transportation.

Contrails, (short for "condensation trails") are line-shaped clouds produced by aircraft engine exhaust or changes in air pressure, typically at aircraft cruise altitudes several miles above the Earth's surface. Contrails are composed primarily of water, in the form of ice crystals. The combination of water vapor in aircraft engine exhaust and the low ambient temperatures that exist at high altitudes allows the formation of the trails.

Jypyä Pop from Turku, Finland

It's like a cumulus cloud

21 Mar 2018 5:56am

Nicou from Sion, Switzerland

Cet arbre avec la traces dans ce ciel bleu e blanc quel effet.
Belle journée

21 Mar 2018 6:02am

Marie from Entre montagnes et Bretagne, France

Lovely sky with this amusing cloud

21 Mar 2018 6:22am

Ronnie 2¢ from Atlantic Shores, United Kingdom

'Chemtrails' to some . .

21 Mar 2018 7:37am

Hiro from Kyoto, Japan

Nice composition !

21 Mar 2018 9:16am

Existence Artistique from Angers, France

bien cette trace

21 Mar 2018 9:30am

Martine Libouton from Bousval, Belgium

Un très beau contre jour !

21 Mar 2018 9:49am

Devi from Chennai, India

Beautiful..thank you for the explanation :)

21 Mar 2018 10:23am

Marjolein from Westvoorne, Netherlands

So this contrail really looks like a spine

21 Mar 2018 11:26am


Nikon D5500
1/640 second
ISO 200
75 mm (35mm equiv.)