“Building with metals not from Earth”

I missed the story last month that a company called Planetary Resources had successfully 3D-printed a small model using “metals not from Earth”—that is, metal harvested from a meteorite. “Transforming a chunk of space rock into something you can feed into a 3D printer is a pretty odd process. Planetary Resources uses a plasma that essentially turns the meteorite into a cloud that then ‘precipitates’ metallic powder that can be extracted via a vacuum system. ‘It condenses like rain out of a cloud,’ said [a company spokesperson], ‘but instead of raining water, you’re raining titanium pellets out of an iron nickel cloud.’ (…) ‘Everyone has probably seen an iron meteorite in a museum, now we have the tech to take that material and print it in a metal printer using high energy laser. Imagine if we could do that in space.’”