Curiosity has previously discovered small organic molecules on Mars, but these recently found compounds are larger and would have require chemistry to reach a more advanced state to be produced. The finding is also good news for potential life hunters, as it shows that the indicators of life could still be around even after billions of years.

The NASA rover "Curiosity" discovered what scientists say is the largest ever seen organic molecules on Mars, raising speculation about if life was created billions of years ago on the Red Planet.

Curiosity has gathered dozens of rock samples since landing on the Martian surface in 2012. One of those samples, obtained from Mars' Gale Crater just a year after touchdown, was