Astronaut Oleg Artemyev captured from ISS jet contrail over Hawaii Island, U.S. Jet contrail is usually something you look up to spot, and this inverted perspective is interesting.

Credit: Oleg Artemyev, Roscosmos

Contrails are produced by jet exhaust. When engines completes a cycle of sucking in -40C air, compressing, combusting and exhausting air, water vapor rapidly crystalizes to form line-shaped clouds.

Reference: Oleg Artemyev’s Tweet
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