Just two years before Neil Armstrong set foot on the moon, a treaty was signed by the United States, the United Kingdom, and the Soviet Union. Signed even as the race to get to the moon was well underway, the 1967 Outer Space Treaty declared that no nation-state could ever own the moon.

The treaty, however, was written at a time when current threats were too real and visions of the future were too dim. Concepts like space tourism, orbital hotels, and companies mining the moon for minerals would have been written off as science fiction.

Fast-forward to today and you’ll find companies like Virgin Galactic ferrying wealthy tourists into space, a man skydiving from low orbit for a Red Bull advertisement, and companies like Planetary Resources and Deep Space Industries looking to mine the moon for its resources.

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