NASA’s Curiosity rover made a “mind-blowing” discovery on Mars — yellowish-green crystals of pure sulfur, never before seen on Earth’s mysterious red neighbor, according to scientists.

The literal ground-breaking find was made after the one-ton Curiosity drove over a pile of rocks and cracked one open while probing the deep and winding Gediz Vallis channel, believed to have been formed by water 3 billion years ago.

“I think it’s the strangest find of the whole mission and the most unexpected,” Ashwin Vasavada, Curiosity project scientist at NASA’s Jet Propulsion Laboratory [JPL] in Pasadena, California, told CNN. “I have to say, there’s a lot of luck involved here. Not every rock has something interesting inside.”

The rover’s operators spotted white stones in the distance and mission scientists wanted to investigate further. On May 30, Vasavada and his team reviewed images from the rover that showed a crushed rock in the wheel’s tracks.


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