Impressive contrails left by a Boeing 787 over Russia

555 An amazing video has emerged of long contrails left by a Boeing 787 flying over the east coast of Russia. The footage, shot from a Boeing 747 on June 17, shows the condensation trails left 33,000 feet in the air. "This contrail looks dark against the rising sun," the filmer wrote online. He explained the trails are the result of hot exhaust mixing with cold air with a high moisture content.

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