Curiosity Cracked Open a Rock on Mars And Found a Huge Surprise
"Finding a field of stones made of pure sulfur is like finding an oasis in the desert," says Curiosity project scientist Ashwin Vasavada of NASA's Jet Propulsion Laboratory.
https://www.sciencealert.com/curiosity-cracked-open-a-rock-on-mars-and-found-a-huge-surprise