What rover Spirit discovered on Mars (photos) Summary: NASA finally pulled the plug on one of the greatest Mars explorers, the rover Spirit. Here's a look at some of the things it found during its life on the Red Planet. By Andy Smith | May 25, 2011 -- 12:32 GMT (05:32 PDT) Previous | Next Image 8 of 19 Spirit contained a rock abrasion tool and was able to drill into 15 different rock samples and analyze them. Topic: Nasa / Space Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.