The Apollo descent stages left on the lunar surface are too small to be seen by Hubble, which can see objects as small as 60-75 yards, about three-quarters the length of a soccer field. The left-behind descent stages are only about the size of a small truck.These observations weren't easy. The moon is a difficult target for Hubble because it moves across the sky faster than Hubble can track it and is very dim in ultraviolet light. The observations required steady, precise, as well as long exposures to search for the resources. In spite of these challenges, Hubble was able to image all of its targets, and early results show that Hubble can detect ilmenite at the Apollo 17 site from 248,000 miles (400,000 km) away.
"The moon is a difficult target for Hubble because it moves across the sky faster than Hubble can track it..."
(Makes absolutely no sense... our eyesight is better than Hubble? LOL)