
Great floods once poured down a towering Martian mountain.
And NASA's dust-covered Curiosity rover has proof.
The car-sized NASA robot has spent much of 2024 exploring the Gediz Vallis channel, a dried-up waterway that travels down the three-mile-high Mount Sharp. Although Mars today is 1,000 times drier than the driest desert on Earth, the rover has spotted clues that long ago the Red Planet




