Aircraft contrails – or condensation trails – are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they create a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals.
Now you can’t say this blog ain’t educational..!
They also make for interesting pictures…..maybe?
Click the first picture to see larger then click anywhere on the picture to view the next, as always, comments and thoughts welcomed.
Photography blog 
Just beautiful, have a look at The Sky Book and Golden Gate by Richard Misrach
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Thanks Giles. Some great work there by Richard Misrach. I like his desert shots of the cacti.
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