NASA says they believe life could have once existed on Mars:
Mars rock sample picked up by the Curiosity rover has found minerals, including hydrogen, carbon and oxygen, that are the building blocks of life, Nasa said on Tuesday.
“A fundamental question for this mission is whether Mars could have supported a habitable environment,” said Michael Meyer, lead scientist for Nasa’s Mars Exploration Program. “From what we know now, the answer is yes.”
The rock sample was drilled from a sedimentary bedrock sample and found to contain clay minerals, sulfate minerals and other chemicals.
Based on the analysis of those chemicals, researchers were able to determine that the water that helped form the rocks were of a relatively neutral pH.
Scientists said the find could represent an incremental step to proving the existence of conditions that could support life on Mars.
The six-wheeled robot, with 10 scientific instruments on board, is the most sophisticated ever sent to another planet.