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Snowfall on Mars? NASA's Phoenix Lander recorded it
http://arstechnica.com/science/news/2009/07/phoenix-lander-observed-snow-falling-on-mars.ars
2 comments
3/7/2009
Reddit
It snows carbon dioxide on Mars: NASA's Mars Reconnaissance Orbiter observations point to 'dry ice' snowfall on Mars
http://www.nasa.gov/mission_pages/mro/news/mro20120911.html
3 comments
11/9/2012
science