They left a mirror behind so that other space orgs could shoot a laser at the moon and see it get reflected back, so they have independent verification.
Not to mention the ton of spaceships that orbited the moon since then from other nations (such as China or India) that took photos of the Apollo landing sites.
They left a mirror behind so that other space orgs could shoot a laser at the moon and see it get reflected back, so they have independent verification.
Not to mention the ton of spaceships that orbited the moon since then from other nations (such as China or India) that took photos of the Apollo landing sites.