Now a team of scientists, led by Shenzhen University in China, have found eight caves on Mars with an accumulation of evidence that water may have carved them into existence. And where there was water, they say, there could be signs life — either ancient, or just possibly contemporary. What if there really is life there, whether long dead or dormant? Send a mission to explore these caves — and see what’s inside. More on Mars: Scientists Investigate Evidence of “Burrowing” Under Surface of Mars