Teleportation is only made possible by a portal. The teleporter is able to open such a portal. The basic idea of teleportation is based on black hole research. A sudden interruption of the energy supply creates a connection between two points in the universe. The prerequisite for this is that the two points must have the same resonance. Therefore, a resonance generator is brought to each planet by the colony ship right from the start. Teleportation is only possible between solar systems, because the resonance only has a short range. In addition, you can only teleport to your own planets.