10 December 2013
NASA’s Mars Curiosity Rover has found signs of an ancient freshwater lake thought to have existed 3.5 billion years ago, a perfect spot for any life that may have once lived on the planet. John Grotzinger of Caltech said the lake appears to be a lot like an ordinary Earth-like lake.  Even though the question of whether life on Mars existed is still being debated, this reinforces the idea that it could be possible. In another finding from the rover, Curiosity was able to date a sample’s age, something that has never been done outside of Earth before. It found one rock was 4.2 billion years old and was exposed to galactic cosmic rays for 78 million years. (Image Credit: NASA)
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