We know what you've all been thinking: why build sophisticated rockets to get payloads into orbit, when you could simply build dumb and loud concrete tubes instead?recent interview with TechCrunch, Grace, whose company is working to build a hypersonic launch system designed to shoot stuff into orbit on the cheap, explained why he thinks that rockets are an "overly exquisite solution" to getting objects off Earth and into space. TechCrunch of his concept for the accelerator, adding that relying on more expensive and involved rockets to deliver payloads to future interplanetary human colonies wouldn't be terribly practical given both cost and demand. Registration on or use of this site constitutes acceptance of our Terms of Service