Why do aircrafts make a white line in space?

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(aircraft (like planes) not travel in space.... except spaceshipone.... http://en.wikipedia.org/wiki/spaceshipon... technically "spacecraft" )

not exhaust, wing tips disturb moisture thats caught in air , begins condensate when settles.

depends on temperature, pressure, how moisture in air , amount of wind......(but still common despite needed criteria)

http://en.wikipedia.org/wiki/contrail


sounds answers please don't fall conspiracy theory.......

educate before buying one.

please

http://en.wikipedia.org/wiki/chemtrail_c...

mercury 2010



Science & Mathematics Astronomy & Space Next



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