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Does it snow on mars?

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Snow on Mars: NASA Spacecraft Spots 'Dry Ice' Snowflakes. Researchers have calculated that carbon dioxide snow particles on Mars are roughly the size of a human red blood cell. It could come from snowfall, or the stuff may freeze out of the air at ground level, researchers said. read more

At such cold temperatures, it does snow on Mars – NASA’s Phoenix Mars Lander detected snow falling from the Martian clouds back in September 2008. However, before the snow had a chance to reach the ground, it vaporised into streaks called virgae. read more

A spacecraft orbiting Mars has detected carbon dioxide snow falling on the Red Planet, making Mars the only body in the solar system known to host this weird weather phenomenon. The snow on Mars fell from clouds around the planet's south pole during the Martian winter spanning 2006 and 2007, with scientists discovering it only after sifting through observations by NASA's Mars Reconnaissance Orbiter (MRO). read more

If correct, this would mean genuine snow on Mars – just like that on Earth. The team used measurements from two orbiting spacecraft (the Mars Global Surveyor and Mars Reconnaissance Orbiter) to study how temperature varies with height in the Martian atmosphere. read more

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