Spaceship Tech in your Setting

[Phantasm]

Originally Posted by Donny Brook

Something like the latter. Not folded though, just a sharper curvature than euclidian geometry conceives. Maybe more like a tight spiral. And higher power drives available at higher TLs allow entry into subspace at greater angles/velocities.

That reminds me of the onion analogy I use for describing how hyperspace works: RealSpace is the "skin" of the "onion", and you travel through hyperspace/wormhole shortcuts passing "deeper" into the "onion". While in theory this could result in instantaneous travel, to do so would compress anything passing through it into a singularity, hence why the safe speeds are measured in single digit lightyears per week.