In five papers published today in the journal Science, scientists using the ChemCam, CheMin instruments, the Alpha Particle X-ray Spectrometer (APXS) and the Sample Analysis at Mars (SAM) suite aboard NASA’s Curiosity Rover team up to describe the Red Planet’s once-volcanic and aquatic history. NASA’s Curiosity Rover. Image credit: NASA / JPL-Caltech / Malin Space Science Systems. The ChemCam instrument showed that the Martian soils...