Question

Under the Outer Space Treaty of 1967, what is the legal status of mineral resources once they are physically removed from an asteroid?

Accepted Answer

Under the Outer Space Treaty of 1967, which serves as the foundational document for international space law, no nation can claim sovereignty—or legal ownership—over celestial bodies like asteroids. While Article II of the treaty explicitly prohibits the national appropriation of outer space, including the moon and other celestial bodies, it remains silent on the status of resources extracted from those locations. Because the treaty does not explicitly forbid the removal or ownership of materials, many spacefaring nations operate under the legal interpretation that once a company or entity physically removes minerals from an asteroid, those materials become the private property of the extractor. This is analogous to international waters in the ocean, where no country owns the sea itself, but a fishing vessel is allowed to own the fish it catches. Consequently, while a country cannot own the asteroid, the act of harvesting resources is generally viewed as a commercial activity permitted under the freedom of exploration and use granted by the treaty, provided the activity does not interfere with the rights of other nations.

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Under the Outer Space Treaty of 1967, what is the legal status of mineral resources once they are physically removed from an asteroid?