Nasa Mars rover: How Perseverance will hunt for signs of past life
Nasa Mars rover: How Perseverance will hunt for signs of past life Nasa's Perseverance rover, due to launch to Mars this summer, will search an ancient crater lake for signs of past life. But if biology ever emerged on the Red Planet, how will scientists recognise it? Here, deputy project scientist Ken Williford explains what they're looking for.extraterrestrial lifemarslink