What was that?Moon GooSomething is moving inside of the Moon. Yes, you read that correctly.A recent study from scientists at NASA and the University of Arizona found that a layer of low-viscosity goo sits between the Moon’s rugged mantle and its metal core. This goo is rising and falling beneath the lunar surface — not unlike, say, ocean tides — which they concluded is likely caused by the gravitational push and pull of the Sun and Earth.”Just like the Moon raises tides on the Earth, the Earth (and Sun) raise…