NASA’s Curiosity rover has found organic molecules on Mars. Organic molecules are the building blocks of all known forms of terrestrial life and consist of a wide variety of molecules made primarily of carbon, hydrogen, and oxygen atoms.
The surface of Mars is currently inhospitable to life as we know it, but there is evidence that the Red Planet once had a climate that could have supported life billions of years ago. For example, features resembling dry riverbeds and minerals that only form in the presence of liquid water have been discovered on the Martian surface. The Curiosity rover with the Sample Analysis at Mars (SAM) instrument suite was sent to Mars in 2011 to [...]