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According to NASA scientists, pure sulfur has been discovered on Mars for the first time, after the Curiosity rover accidentally found a cluster of yellow crystals while driving over a rock. And the area appears to be full of sulfur. This is an unexpected discovery: although minerals containing sulfur have been observed on Mars, elemental sulfur itself has never been seen before. “Sulfur forms only under a narrow range of conditions that scientists have not linked to the history of this site,” the NASA scientists said. .
Curiosity broke the rock on May 30 while traveling through an area known as the Gediz Valis Channel, where similar rocks were found all around. The channel is thought to have been carved out by water and debris flows long ago. “Finding a rock mass made of pure sulfur is like finding an oasis in the desert,” said Ashwin Vasavada, Curiosity’s project scientist. “It’s not supposed to be there, so we have to explain it. Discovering strange and unexpected things is what makes planetary exploration so exciting.”
After finding the yellow crystals, the team used a camera on Curiosity’s robotic arm to take a closer look. The rover then took samples from another nearby rock, as the broken rock fragments were too brittle to drill into. Curiosity is equipped with instruments that can analyze the composition of rocks and soil, and the Alpha Particle X-ray Spectrometer (APXS) confirmed the discovery of elemental sulfur, according to NASA.
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