Which geological features are cited as persuasive evidence testifying to a time when Mars possessed an ancient ocean?

Answer

Ancient beaches

One of the most compelling pieces of evidence for a past ocean comes from the identification of ancient beaches, which testify to a time when surface water bodies existed.

Which geological features are cited as persuasive evidence testifying to a time when Mars possessed an ancient ocean?

#Videos

Oceans on Mars: Zhurong's Unbelievable Discovery - YouTube

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