This solution proposes that payloads might be launched into space by means of magnetized cables that are contained in sheaths.

In essence, the device would consist of a sheathed cable that is attached to Earth at both ends, but with the middle part, which can be as long as 2000 km(1

240 miles), suspended above the atmosphere by the momentum of a flat belt that will be circulating around the entire structure.

In effect, the momentum of the circulating belt would transfer the mass of the structure to a pair of supporting magnetic bearings at each end of the loop.

Learn more about launch loops on wikipedia also on Kerbal Space Program