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Just want to add that #CuriosityRover found PURE sulfur on #Mars
Why is that a BFD? Pure sulfur only appears on earth near hydrothermal vents deep in the ocean where microbial life thrives
and the rover just ran over it which allowed it to be exposed.
If you would ask what samples were the most valuable to find on mars, this would be number one
no one expected Mars to have this. Scientists are going bonkers over this
https://www.jpl.nasa.gov/news/nasas-curiosity-rover-discovers-a-surprise-in-a-martian-rock