I almost forgot about the Curiosity Rover on Mars. It still cruises around on the red planet.
NASA announced that the Mars Curiosity rover will complete a Martian year (687 Earth days) today. The Mars Curiosity Rover has accomplished the mission's main goal of determining whether Mars once offered environmental conditions favorable for microbial life.
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One of Curiosity's first major findings after landing on the Red Planet in August 2012 was an ancient riverbed at its landing site. Nearby, at an area known as Yellowknife Bay, the mission met its main goal of determining whether the Martian Gale Crater ever was habitable for simple life forms. The answer is "yes." Scientists based that on analyzing two mudstone slabs that the rover sampled with its drill.
The Analysis of these samples revealed the site was once a lakebed with mild water, the essential elemental ingredients for life, and a type of chemical energy source used by some microbes on Earth. If Mars had living organisms, this would have been a good home for them.
There has been though no evidence found that there was life on Mars at anytime. NASA lists more nerdy accomplishments of the Curiosity Rover here. Watch a video report from NASA about the Curiosity Mission below.