A chance discovery by NASA’s Curiosity rover reveals the first direct evidence of an ancient Martian sandstorm, reshaping our understanding of the planet’s past climate. A chance observation by NASA’s Curiosity rover has uncovered the first direct physical evidence of an ancient Martian sandstorm, offering a rare glimpse into the planet’s climate more than 3.5 billion years ago. The findings, published in the journal... [5455 chars]