It sounds as crazy as the space elevator, but the physics work: a group of engineers want to build a slingshot-like machine to launch payloads to space at 1/100 the cost of rockets. The acceleration would be so high that it could only launch fuel and building materials, which is crucial for interplanetary travel.
Meet the team behind the Slingatron, a massive coil of railroad tracks that could shoot a train into low Earth orbit. They are hoping that their homebrewed mass accelerator could be used to shoot objects (not delicate humans) into space.
This Slingatron is the greatest thing we can think of to free up Superman's time for other things, like courting Lois or getting drunk and being a dick. Instead of spending $10,000 per pound to send stuff into space with traditional rockets, this Slingatron design is like a centrifuge that spins things around until…