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 experienced momentous floods. It was a wet world.
“This was not a quiet period on Mars,” Becky Williams, a scientist at the Planetary Science Institute who researches Mars using the rover’s Mast Camera, said in a statement. “There was an exciting amount of activity here. We’re looking at multiple flows down the channel, including energetic floods and boulder-rich flows.”
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