An attitude problem sidelined NASA's Mars rover Curiosity recently, but the robot's handlers whipped it back into shape in short order.
NASA's Mars rover Curiosity had an attitude problem. (But it's fine now.) : Read more
"The main goal of that mission involves assessing Gale's past ability to support life. Curiosity has found that the area hosted a potentially habitable lake-and-stream system in the ancient past. And this system was long-lived, likely lasting for
millions of years at a time."
A good report. I note, Martian meteorite samples exist on Earth and studied for 25 years or more.
NASA scientists find evidence of water in meteorite, reviving debate over life on Mars, "Summary: A team of scientists has found evidence of past water movement throughout a Martian meteorite, reviving debate in the scientific community over life on Mars. In 1996, a group of scientists reported biogenic evidence in the Allan Hills 84001(ALH84001) meteorite. In this new study, researchers focused on structures deep within a 30-pound (13.7-kilogram) Martian meteorite known as Yamato 000593 (Y000593)."
So far, the study of Martian rock samples available - no conclusive claim that life is/was on Mars.