Curiosity Asks: Where Are the Mars Organics?

NASA's Mars rover Curiosity has analyzed pristine Mars rock powder -- could it contain chemical evidence of past habitability on the red planet's surface?

March 11, 2013
2:30 PM EDT
The rover's Mars Hand Lens Imager (MAHLI) camera recorded this close-up view of the drill test results during the 180th Martian day, or sol, of the rover's work on Mars. | NASA/JPL-Caltech