HiRISE (NASA)
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HiPOD 30 Apr 2022: Windows to Ancient Mars

The Argyre impact basin contains some ancient eroded terrains, exposing rocks with diverse compositions, as shown by the color variability.

These are windows into ancient Mars, which was a wetter world than Mars today.

uahirise.org/hipod/ESP_020799_
NASA/JPL-Caltech/UArizona

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