In the summer of 2012, a dusty, car-sized rover named Curiosity touched down on the surface of Mars.
A few months later, the little-rover-that-could dug up dirt samples that hinted that a fresh water pond, including carbon, hydrogen and other life-essential elements, had once existed some four billion years prior.
Finally, humanity rejoiced, there was reason to believe Mars was once home to alien life! At least, life in the form of microscopic water amoebas.
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