alien life on mars

Curiosity Sniffs a Spike in Methane. Could it be a Sign of Life?

Curiosity Sniffs a Spike in Methane. Could it be a Sign of Life?

Since it landed on Mars in 2012, one of the main scientific objectives of the Curiosity rover has been finding evidence of past (or even present) life on the Red Planet. In 2014, the rover may have accomplished this very thing when it detected a tenfold increase in atmospheric methane in its vicinity and found traces of complex organic molecules in drill samples while poking around in the Gale Crater.