Artist's impression of Curiosity using its Chemistry and Camera (ChemCam) instrument to investigate the composition of a Martian rock. | NASA/JPL-Caltech

Mars Rover Plutonium Triggers Launch Precautions

Mars rover plutonium triggers launch precautions. Find out why the plutonium on the Mars rover is triggering launch precautions.

November 24, 2011
3:00 AM EST