Self portrait of Curiosity Rover at a drilling site on Mars. The drilled hole can be seen on the Martian surface. This location was not part of this latest study. (Courtesy: NASA/JPL-Caltech/MSSS) Topics: Biology, Exoplanet, Mars, NASA, Space Exploration, Spaceflight Organic molecules have been found in ancient rocks under the surface of Mars. The discovery was made by NASA’s Curiosity Rov…