“A US company said Tuesday it plans to send a fleet of spacecraft into the solar system to mine asteroids for metals and other materials in the hopes of furthering exploration of the final frontier. In a first step, the company plans to send ‘asteroid-prospecting spacecraft’ into the solar system, with the first — 55-pound (25-kilogram) ‘FireFlies’ — to be launched in 2015 on journeys of two to six months.”
