University Park PA (SPX) Jan 18, 2022 NASA's Curiosity rover landed on Mars on Aug. 6, 2012, and...
University Park PA (SPX) Jan 18, 2022 NASA's Curiosity rover landed on Mars on Aug. 6, 2012, and since then has roamed Gale Crater taking samples and sending the results back home for researchers to interpret. Analysis of carbon isotopes in sediment samples taken from half a dozen exposed locations, including an exposed cliff, leave researchers with three plausible explanations for the carbon's origin - cosmic dust, ultraviolet degr