"At the Space Investment Summit in Boston last week, Hunter described a design for a 1.1-kilometre-long gun that he says could launch 450-kilogram payloads at 6 kilometres per second. A small rocket engine would then boost the projectile into low-Earth orbit. While humans would clearly be killed and conventional satellites crushed by the gun’s huge g-forces, it could lift robust payloads such as rocket fuel. Finding cheap ways to transport fuel into space will lower the cost of keeping the International Space Station in orbit, and in future it may be needed to supply a crewed mission to Mars. The gun would cost $500 million to build, says Hunter, but individual launch costs would be lower than current methods. “We think it’s at least a factor of 10 cheaper than anything else,” he says." - Steven Perez from Bookmarklet

This appeals to the 11 year old boy in me like nothing else. - MoTO Bott