There's a lot of trash on the Moon right now – including nearly
100 bags of human waste – and with countries around the globe traveling
to the Moon, there's going to be a lot more, both on the lunar surface and
in Earth's orbit. […]
Humans have left a lot of junk on the Moon, including spacecraft
remains like rocket boosters from over 50 crashed landings, nearly
100 bags of human waste and miscellaneous objects like a feather, golf
balls and boots. It adds up to around 200 tons of our trash. Since no one owns the Moon, no one is responsible for keeping it clean and tidy. […]
The United Nations Outer Space Treaty of 1967 says that no country can
“own” the Moon or any part of it, and that celestial bodies should only be
used for peaceful purposes. But the treaty is mute about companies and
individuals, and it says nothing about how space resources can and can't be
used. The United Nations Moon Agreement of 1979 held that the Moon
and its natural resources are the common heritage of humanity. However,
the United States, Russia and China never signed it, and in 2016 the U.S.
Congress created a law that unleashed the American commercial space
industry with very few restrictions. […] The lack of regulation and the
current gold rush approach to space exploration mean that space junk and
waste will continue to accumulate, as will the related problems and dangers.