By materializing their own time ship around the victim's time ship while moving through space, they force the victim and his/her ship to materialize in different locations inside (as well as any other objects with different causal matrices). The Palpastie ship does not overlap in space with other matter as it materializes (creating a matter interface, such as in the Doctor Who episode Nightmare Of Eden), but compensates by moving its internal parts out of the way to make room (this also makes its outer dimensions shift as well). That said, the fit is often very tight, immobilizing the victim.
Palpastie ships are filled with almost entirely with very high, narrow hallways (or wide and short) - too narrow for a human to squeeze through. The Palpastie move by means of fans located in the center of their bodies. They derive power from the electrified walls of the halls through their long fingers. There is no artificial gravity in these ships and they are too small and lightweight to have much natural gravity. Below is a typical member of the species with its arms slightly folded. They are highly intelligent.
The Palpastie are distantly related to a large taxon of life designed to live in microgravity, an example of which is shown below. This creature walks on both sides of the asteroid tunnels - "top" and "bottom." If it kicks to hard and looses its footing in a large room, it will not hit its back. Whatever side it lands on, it will be ready to grasp the surface (this especially helps in the interior of some asteroids where there is no light or air for sound to travel through, and no way to sense the wall coming).