If we were to talk about hypotheticals, let's look at this picture of Io[1] taken from Earth's surface. Io's angular size is 1.2 arcsec. Feature of that apparen

If we were to talk about hypotheticals, let's look at this picture of Io[1] taken from Earth's surface. Io's angular size is 1.2 arcsec. Feature of that apparent size would be ~2.2km in diameter on the surface of our Moon. With that kind of resolution it seems that you could map out features of 50-100m in diameter. Obviously though, no one will tie up one of the most expensive telescopes with a project of covering half of Moon's surface with that kind of pictures. A satellite would be a better tool for this job. [1] https://news.berkeley.edu/2024/05/30/with-new-sharper-optics-arizona-telescope-captures-rare-images-of-jupiters-moon-io/ https://news.berkeley.edu/2024/05/30/with-new-sharper-optics...