Mars Was Doomed to Become a Barren Lifeless Planet from the Beginning, Says New Study

Mars was born with a fatal flaw that doomed it to become a barren lifeless place, according to new research: it was always too small to retain large amounts of water. Evidence that water was once present on Mars has been mounting for decades and this month NASA's Perseverance rover collected rock samples which have all but confirmed groundwater flowed on the red planet.

Mysterious Methane Detections on Mars Baffle NASA Scientists

Detections of methane on Mars have excited scientists because, on Earth, the gas is often produced by microbes - its presence could indicate that similar life was, or is, present on the red planet. There are potential geological processes that could produce methane too, but even before identifying the source of the gas on Mars, scientists have been trying to solve another mystery.