The white streaks in the sky left behind by airliners are, at least, intriguing. Condensation of water vapour for some, spreading of chemical products for others : difficult to know for certain because no extensive study in this domain has ever been conducted.
Alexander
Posté the 06/06/2016 9:32 am
Bullshit, it's the gravity force when too much moist in the atmosphere and engine heat causes the moist to form vapor cloud.
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