Compelling Evidence Reveals Ancient Mars Hosted Oceans and Wet Environments

Groundbreaking discoveries reveal Mars once hosted vast oceans and wet environments around 3 billion years ago, as evidenced by the planet's iron-rich minerals and potential ancient shorelines, offering compelling insights into its watery past.

• Ancient Mars had abundant liquid water and a cold, wet environment around 3 billion years ago.
• The planet's iconic red color comes from the water-containing mineral ferrihydrite, suggesting cold surface waters.
• A buried slope detected by a Chinese rover may represent an ancient shoreline, hinting at the past presence of an ocean.