How do you get to go into outerspace with an A-lister, in this case Leonardo DiCaprio?

FORBES: How One Russian Got A Trip To Outer Space With Leo DiCaprio

Two of them -- the Outerspace Treaty and the 1979 Moon Agreement -- deal with lunar law.

CNN: Who owns the moon? It's 'complicated,' say experts

SpaceShipTwo, its inventively named commercial vehicle designed to take (well-moneyed) civilians into outerspace, has just completed its first rocket-powered test flight.

ENGADGET

While 98 nations, including all the major spacefaring ones, have ratified the Outerspace Treaty, only 13 countries have approved the Moon Agreement -- Kazakhstan, Lebanon, Uruguay and Mexico, to name four.

CNN: Who owns the moon? It's 'complicated,' say experts