Aug 09, 2013 09:39 PM EDT
How to Mine Asteroids: Learn From NASA's OSIRIS-REx Asteroid Mission
Asteroids could one day be a vast new source of scarce material if the financial and technological obstacles can be overcome. Asteroids are lumps of metals, rock and dust, sometimes laced with ices and tar, which are the cosmic "leftovers" from the solar system's formation about 4.5 billion years ag...