NASA just witnessed its biggest methane gas emission on Mars

Mariella Moon
Associate Editor
NASA just witnessed its biggest methane gas emission on Mars

NASA has confirmed that the Curiosity rover recently detected the "largest amount of methane ever measured during the mission." The levels were enough to pause the rover's activities as scientists sought more answers: Methane is a gas typically produced by life as we know it, after all, and it could be a sign of life on the planet. Curiosity's methane reading came to 21 parts per billion units by volume, which is thrice the amount it sniffed out during a surge in 2013.