December 10 , 2025
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- Scientists have mapped 16 major ancient river basins on Mars, including Paraná Valles.
- The basins were identified using valley networks, lakes, rivers, canyons, and sediment deposits.
- The Large drainage systems on Mars cover 100,000 square kilometres or more, similar to Earth’s large rivers.
- These areas show evidence of ancient flowing water, erosion, and sediment transport.
- Large basins represent 42% of the total material eroded by rivers on Mars, even though they cover only 5% of the planet’s terrain.
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