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Study Reveals Mars May Have Hosted Ancient Ocean

10/2/2025

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Summary

Story summary

Researchers at the University of Arkansas found geological formations suggesting Mars once hosted an ocean.
The study identifies large rivers flowing into this northern-hemisphere ocean, with mature deltas and backwater zones similar to Earth.
Lead author Cory Hughes notes that liquid water raises the potential for life.
The findings build on prior work and were published in Geophysical Research Letters.

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Story summary

Researchers at the University of Arkansas found geological formations suggesting Mars once hosted an ocean.
The study identifies large rivers flowing into this northern-hemisphere ocean, with mature deltas and backwater zones similar to Earth.
Lead author Cory Hughes notes that liquid water raises the potential for life.
The findings build on prior work and were published in Geophysical Research Letters.