How long will footprints remain on the moon?
The footprints on the moon will probably be there for that as long as the moon is up. Unlike Earth, the Moon has no liquid water, no volcanic activity, and no significant weather. Aside from the occasional meteorite and solar wind (which lasts forever), there’s nothing on the moon to mess with with footprints. They are still there– along with spacecraft, scientific equipment, memorabilia, bags of human waste and a lot more.