Stadium-sized asteroid heading to Earth this week

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39. The Earth was nothing but water at a point early in it's existence.

It may be difficult to say our moon is moving away from us, it's motion can be part of a pattern that takes hundreds of thousands of years or even millions of years to fully develop - so measurements that are made are not even snapshots in time. The moon that is getting closer to MARS is doing that in real time, so that pattern is highly measurable and the end result predictable.

One thing that may be happening now with Earth can be used as an illustration of why we can't really predict what our moon is doing vis a vis distance from Earth, outside of solar driven effects on it's orbit. The magnetic field of Earth is weakening over one area on Earth, true North and true South have also shifted. One theory of what is happening is that the Earth is undergoing polar inversion, a process that takes something like around 300,000-400,000 years. If our instruments are fine enough, maybe we can detect that an inversion is happening as I write, most likely, all we will see are extremely fine but continuous changes in positional strength of the magnetosphere and changes to the poles, things that seem to be happening.