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Company sets a course to mine asteroids

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Hauling back the precious cargo will be difficult, especially for a small company, Farrar said.

“It’s a very complicated process, but at least it may drum up interest from the public to visit asteroids.”

Just this month, the Keck Institute for Space Studies, a California Institute of Technology think tank, released a study that concluded scientists now have the capability to robotically capture an asteroid and haul it back toward Earth — depositing it in orbit above the moon, where it could then be studied, dissected and exploited for its resources. This radical new space mission could renew interest in space travel, the study said.

“Retrieving an asteroid for human exploration and exploitation would provide a new rationale for global achievement and inspiration,” the study concluded. “For the first time, humanity would begin modification of the heavens for its benefit.”

Because asteroids are packed with potentially valuable materials — nickel, cobalt, silicate residue and more — the study recognized the potential commercial applications of the mission, noting that it “could jump start an entire ... resource utilization industry.”

But the conventional wisdom about asteroid mining is that it would entail bringing that material back to Earth — “the idea that we’re bringing back gold or something from ‘them thar hills,’ ” said Louis Friedman, a leader of the Keck report and executive director emeritus of the Planetary Society, the largest space interest group.

“That may be the least likely outcome,” Friedman said, because of the “enormous difficulties of getting it back to Earth.”

A more likely scenario, Friedman said, is that Planetary Resources tries to extract materials in space — then uses the materials to begin manufacturing up there.

“The most valuable thing asteroids contain is basically rock and dirt — material that would serve as the raw feedstock for constructing things in space,” Friedman said.

For instance, Planetary Resources could be setting itself up as a massive space contractor.

President Barack Obama has set a goal of sending astronauts to Mars in the 2030s. That would require a long journey — and shielding astronauts from an unprecedented amount of radiation. Building a radiation shield on Earth and then flying it into space would be enormously expensive.

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