The gully system in the Promethei Terra region of Mars appears to have been carved by melt water and may be the most recent period when water was active on the planet. Credit: NASA/JPL/University of Arizona
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The gully system in the Promethei Terra region of Mars appears to have been carved by melt water and may be the most recent period when water was active on the planet. Credit: NASA/JPL/University of Arizona |
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