The Launch loop uses the momentum of a rotating cable to keep the system up. This space elevator uses super conducting magnets to levitate against the earths ma

The Launch loop uses the momentum of a rotating cable to keep the system up. This space elevator uses super conducting magnets to levitate against the earths magnetic field. It's like a gyroscopic force versus an electromagnet: they're both forces, but one is caused by mechanical movement versus the other which is caused by magnet fields.