Illustration of the Argyre impact basin in Mars' Southern Highlands, featuring the Galle crater, also known as the happy face crater. About 4 billion years ago, Mars was struck by an asteroid or comet, forming this distinctive surface feature. Argyre, which is about a thousand miles across, is the second-largest impact basin on Mars, second only to Hellas Planitia. It is believed that the impacting object responsible for creating the basin was approximately 30 miles in diameter. Within the basin, you can find the relatively flat plains of Argyre Planitia.

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Size: 5315px × 3661px
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Photo credit: © DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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