By 
October 26th, 2025
Image credit: Mars Guy/NASA/JPL-Caltech/Inside Outer Space screengrab
Mars Guy spotlights a rock on the Red Planet inspected by NASA’s Perseverance Rover at Jezero Crater that looks like fossilized hot spring organisms.
“Hot springs on Earth often host microbial communities that produce biofilms in their outflow channels,” says Mars Guy. “Sometimes when hot springs dry up, they leave behind fossilized streamers, which look a lot like the features in a rock found by Perseverance.”
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Posted in Space News
