Scientists trace ancient mega watersheds on Mars

Los Angeles CA (SPX) Dec 03, 2025

Billions of years ago, rainfall on Mars fed rivers that cut valleys, overtopped crater rims and carved canyons, with some flows likely reaching a northern ocean basin on the planet.

Researchers at The University of Texas at Austin have now organized these fluvial features into large drainage systems, producing the first global inventory of major Martian river basins and identifying 16 larg