simple addon to Create: Northstar + Aeronautics that adds a block allowing aeronautics vessels to be transported between Northstar's planets.
potential issues:
springs might break during teleport, still untested
current known issues:
entities may sometimes lag behind the ship at faster speeds in singleplayer (multiplayer too, potentially)? this causes them to be considered outside of the vessel by the time it teleports (does not apply to entities seated on create mod seats)
minecart contraptions and trains won't be teleported properly (these likely won't be teleported properly any time soon)
the creative tab also isn't added properly, the block added is called "Stellar Navigator"
you cannot use the physics staff on a sublevel after it gets teleported unless you reload the world (inconsistent, sometimes it works)