NASA: Perseverance Mars Rover Discovered Potential Evidence of Life on Mars Perseverance's discovery came from an ancient dry riverbed. ET Source: NASA Mars/XThe National Aeronautics and Space Administration (NASA) announced a stunning development with the Perseverance Mars rover that has countless scientists and space fans teeming with excitement. Article continues below advertisementNASA announces the Perseverance Mars Rover discovered evidence of life on Mars. According to a Sept. 10 news release by NASA, "A sample collected by NASA’s Perseverance Mars rover from an ancient dry riverbed in Jezero Crater could preserve evidence of ancient microbial life. The rock sample collected by the Mars rover is "the best candidate so far to provide evidence of ancient microbial life on Mars," per the Tweet.