Space materials can 'expand the civilization of Earth out into the cosmos,' firm says
                                
                                
                                    (Newser) -
                                    Asteroid mining is just a few years away, according to a US company, but there won't be any jobs for pickaxe-wielding spacemen just yet: The first probes will only be the size of laptops. Deep Space Industries plans to send the probes on prospecting trips to some of the...