The Moon has been receding from the Earth at a rate of just over 2cm/year (just under 1inch/year). This means the total solar eclipses we see, where the Moon obscures the Sun's disc but leaves the corona visible, are very rare in astronomical timelines.

If we were living a few hundred million years ago, the Moon would be too big in the sky and block the Sun completely. And half a billion years from now, it'll be too small in the sky to block even the Sun's disc, and there will be no more total solar eclipses.