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Aug. 05, 2011
Scientists Spot Signs of Salty Water on Mars
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Some cliff faces on Mars feature dark streaks that appear during the warm months, then disappear when weather turns colder. Writing in the journal Science, some researchers say that the streaks could be signs of briny water on the Martian surface. Planetary scientist Alfred McEwen discusses the findings, and what they might mean for future studies of the red planet.
Below: Time-lapse video over several seasons taken by the HIRISE imaging system on the Mars Reconnaissance Orbiter. NASA video. |
Produced by Charles Bergquist, Director and Contributing Producer
Guests
-
Alfred McEwen
Principal Investigator, High Resolution Imaging Science Experiment (HiRISE)
for Mars Reconnaissance Orbiter
Professor of Planetary Sciences
Lunar and Planetary Laboratory
University of Arizona
Tucson, Arizona
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