Astronaut Ivan Vagner captured from ISS the jet contrail over Munich, Germany. Jet contrail is usually something you look up to spot, and this inverted perspective is interesting.
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: Ivan Vagner’s Tweet
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