Illustration of Mars as seen millions of years ago when filled with water and mud. Mars featured considerable quantities of water many millions of years ago, but all large expanses of liquid water have since disappeared. A small quantity has remained as ice, and incorporated into the structure of water-rich substances such as mineral clay and sulphates.

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Size: 5315px × 5315px
Location:
Photo credit: © DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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