A (Frozen) Great Lake of Water Is Found Beneath the Surface of Mars

Mars has long been a target of human curiosity. A blood-red eye in the sky, hanging, baleful. Our understanding of it has changed over time; it was thought to be somewhat Earth-like for a while, but then we sent space probes there and found it to be a desiccated, dead world. Well, at least for now. We have pretty conclusive evidence it once had plentiful liquid water on the surface, including lakes, rivers, and even oceans. That was eons ago; the solar wind stripped away the atmosphere from Mars...