A rock collected by NASA’s Perseverance rover may hold the strongest evidence of life beyond Earth ever found, officials said Wednesday.

Nasa ’s Perseverance Rover has found some unusual rocks on the planet’s surface, hinting at potential past life there.

“This very well could be the clearest sign of life that we’ve ever found on Mars,” acting NASA Administrator Sean Duffy said at a press conference coinciding with the publication of a paper on the fin...