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How Long do Contrails Last?

Q) How long do contrails last? A) According to all the books on clouds in the last 70 years, contrails last anywhere from less than a second, up to several hours. If depends on the atmospheric conditions at the altitude the plane is flying. It’s unrelated to the...
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Racetrack Contrails

Here’s a contrail you don’t see every day: the racetrack contrail (or, as I like to call this one, the paperclip contrail) This photo was taken near Portland, Oregon on December 11th, 2005, at around 11AM. So why would a plane be flying in this unusual pattern? Well,...
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Pre WWII Contrails

The Wright Brother’s first achieved powered flight in 1903. They only got a few feet off the ground, so of course did not leave a contrail. However it was barely more than a decade before planes inched into colder air, and the first reports began. The earliest known...
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Barium Chemtrails on KSLA

Brief Summary: Samples of water were collected in August 2007, in Stamps Arkansas, by leaving some bowls outside for a month The resultant dirty water was tested by KSLA and was found to have the same amount of barium in it as most municipal tap water. The reporter...
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Where are all the Chemtrail Photos?

Some people think that persistent spreading contrails are somehow unusual, and are actually something dangerous being deliberately sprayed on the US people by the government, or perhaps for weather control purposes. They call these persistent contrails “chemtrails”. Some of them are very insistent that this is a practically...
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Broken Contrails and Contrails with Gaps

Contrails are clouds made from water vapor that condenses then freezes behind a plane engine. Since the engines are on constantly, it seems a bit odd when you see contrails with gaps in them, or even contrails that stop and start. If the engine is pumping out a...
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“Chemtrail” Aircraft Photos

Several planes look a little odd, or have attachments that look odd, and so some people feel they must be part of a decades long conspiracy to spray stuff into the atmosphere to alter the weather or reduce the population. That’s obviously nonsense, but what are these strange...
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Persisting and Spreading Contrails

Do contrails sometimes persist and spread out? Yes, see the Encyclopædia Britannica article on vapour trails (contrails): Contrail, streamer of cloud sometimes observed behind an airplane flying in clear, cold, humid air. It forms upon condensation of the water vapour produced by the combustion of fuel in the...
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