Mars, Curiosity and noctilucent cloud
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Space on MSN'Iridescent' clouds on Mars captured in Martian twilight in stunning NASA rover images (video)"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...
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Hosted on MSNWhy Clouds Stay In The Sky, Rather Than Simply Falling DownIf clouds are heavy, why don’t they just fall to the ground? There’s one key concept behind this. Meteorologist Robb Ellis explains.
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