This is the physiography of the Gale Crater shown in a HiRISE map.
Credit: NASA
The presence of water on Mars has been theorized for centuries. Early telescopes revealed ice caps, and early astronomers noted channels that were hypothesized to be natural rivers or creature-created canals. Over the past two decades, rovers Sojourner, Spirit, Opportunity, and Curiosity have sent back invaluable data to scientists who are trying to interpret the planet’s surface and uncover evidence of past or present water.
Since its landing on the “Red Planet” in August of 2012, Curiosity Rover has traveled about 20 kilometers within Gale Crater...
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