Birdwatch Note Rating
2023-05-12 01:23:00 UTC - HELPFUL
Rated by Participant: 9EC7456D88F65C839B6EE98CC4D73AA918ED8A8195DE264E4D5D7EDF8E9DCFA7
Participant Details
Original Note:
Contrails are line-shaped clouds produced by aircraft engine exhaust miles above Earth's surface. Contrails are composed primarily of water, in the form of ice crystals. This phenomenon is reproducible via many experiments. Contrail properties observed and studied since 1920s https://www.nasa.gov/sites/default/files/atoms/files/contrails_k-12.pdf
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