“Well, there's one I thought of. Nothing passes through in the opposite direction, right? Including gravitons. Gravity can't penetrate the wormhole. It's not very obvious when the ring is vertical, but..." Ed manipulates a remote control and turns the hoop horizontally, so the wormhole leads downwards. "This way, it's easier to see. The way to think about it is as if the whole Earth was glowing white, and the ring is your only shadow. So you can see there's a small cone-shaped area above the wormhole which is in gravity shadow. Zero gravity.”
―
qntm,
Ed
