There’s a nice big optical and radar reflector on the moon you can see with a home telescope. Apollo missions left it there.
Observatories all over the world watched the moon landings via their larger telescopes at the time.
According to NASA.....The Falcon Heavy can lift over double the payload, or cargo, as the next closest rocket, as it is designed for potential human spaceflight—perhaps back to the Moon or even Mars in the future. To put it in perspective, the rocket’s first stage is composed of three Falcon 9 nine-engine cores, totaling 27 Merlin engines. Additionally, the second stage’s engine can be restarted many times, making multiple orbits possible.