The bootprints left by the Apollo astronauts will still be sitting on the Moon a million years from now, because there is no wind and no rain to wear them away.

The bootprints left by the Apollo astronauts will still be sitting on the Moon a million years from now, because there is no wind and no rain to wear them away.

The Apollo tracks, first pressed into the lunar surface in 1969, will almost certainly still be visible in some form a million years from now. There is no wind on the Moon and no rain, so the forces that erase a footprint on a beach within hours do not operate at all. What the tidy version leaves out is that the Moon is not free of erosion. It just runs on a different clock. Why the prints last at all A footprint on Earth is destroyed by moving …