"Fireflies" to scope out space rocks for mining (video)

http://edition.cnn.com/2013/01/22/us/space-asteroid-mining/index.html?npt=NP1 / billionaires mine asteroids Deep Space Industries prospect minerals dragonflies mine return Earth scientists unlikely cost effective billions dollars few grams matter back to earth gold prices piggy-backing off other space launches launch booster cost of fuel more cost-effective pioneer technology humans set up a permanent base in space mine materials from the surrounding systems fuel refuel space /