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Loading contentExtracting metals — iron, nickel, and precious metals — from asteroids and from lunar and Martian regolith, to build structures in space without lifting the mass from Earth. Metal-rich M-type asteroids such as Psyche are studied as future resources.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.