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Asteroid mining

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Asteroid mining is the exploitation of raw materials from asteroids and other minor planets, including near-Earth objects.
Hard rock minerals could be mined from an asteroid or a spent comet. Precious metals such as gold, silver, and platinum group metals could be transported back to Earth, whilst iron group metals and other common ones could be used for construction in space.
Difficulties include the high cost of spaceflight, unreliable identification of asteroids suitable for mining, and ore extraction challenges. Thus, terrestrial mining remains the only means of raw mineral acquisition used today. If space program funding, either public or private, dramatically increases, this situation may change as resources on Earth become increasingly scarce compared to demand and the full potentials of asteroid mining—and space exploration in general—are researched in greater detail.
Purpose
Based on known terrestrial reserves, and growing consumption in both developed and developing countrie…