NASA - National Aeronautics and Space Administration

NASA Mars Lander Sees Falling Snow, Soil Data Suggest Liquid Past
09.29.08. -- NASA's Phoenix Mars Lander has detected snow falling from Martian clouds. Spacecraft soil experiments also have provided evidence of past interaction between minerals and liquid water, processes that occur on Earth.
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The Phoenix mission is led by Peter Smith at the University of Arizona, Tucson, with project management at NASA's Jet Propulsion Laboratory, Pasadena, Calif., and development partnership at Lockheed Martin, Denver. International contributions are provided by the Canadian Space Agency; the University of Neuchatel, Switzerland; the universities of Copenhagen and Aarhus, Denmark; Max Planck Institute, Germany; and the Finnish Meteorological Institute. Further information about Phoenix is online at http://www.nasa.gov/phoenix and http://phoenix.lpl.arizona.edu .