The Daleks began to research space travel when a Krattorian ship piloted by a slave-owner Kest landed on Skaro. Interested in seizing the ship for themselves, they began examining it. Kest's escaped slaves Sala and Astolith managed to steal the ship, killing Kest and leaving Skaro. However, by then the Daleks had learned enough about spaceship operation to begin the construction of their own spacecrafts. (COMIC: Power Play)