Mining in space is moving from science fiction to commercial reality but metals magnates on this planet need not fear a mountain of extraterrestrial supply the aim is to fuel human voyages deeper into the galaxy. Within three years, two firms plan prospecting missions to passing asteroids. When even a modest space rock might meet demand for metals like platinum or gold for centuries, it is little wonder storytellers have long fantasized that to harness cosmic riches could make, and break, fortunes on Earth.
But with no way to bring much ore or metal down from the heavens yet, new ventures that have backing from some serious and seriously rich business figures, as well as interest from NASA, will focus on using space minerals in interplanetary gas stations or to build, support and fuel colonies on Mars and elsewhere. This means the primary target may be water-ice, to make fuel first.