Morestran Morestrans were human s who had colonised the planet Morestra , and had then built a space - faring empire which spanned eighty million light - year s and contained fourteen hundred twenty - seven inhabited star system s by the 372nd century . Technology . Morestrans used probe ship s — a far ranging spacecraft — as one means of transport . These ships were equipped with force field s , cyclostimulator s and atomic accelerator s . They also possessed teleport ation technology that allowed objects — such as the Doctor ' s TARDIS — to be fitted with a device that would transfer the desired item to their ship . The Morestrans made use of oculoid trackers — a remote drone utilised for reconnaissance . They also employed neutron accelerator s as a handheld weapon . ( TV : " Planet of Evil " ) History . In the 32nd century , Morestrans were among the species who visited the Vita Novus Health Spa . ( AUDIO : " The Beautiful People " ) When Morestra ' s sun began to die , scientists pursued alternate sources of power . This pursuit led Professor Sorenson to take an eight - man expedition to Zeta Minor , the planet farthest out in the known universe . He soon discovered that anti - matter mineral s provided anti - quark energy which Sorenson believed could be harnessed to provide a huge amount of power . However , the expedition came under attack from an anti - matter creature . The Morestrans sent a probe ship under the command of Controller Salamar to discover what had become of Sorenson ' s team as no word had come since their arrival on Zeta Minor . Having landed on the planet , the Morestrans discovered the Fourth Doctor and Sarah Jane Smith and believed them to be responsible for the death . The minerals were taken aboard the probe ship . When they attempted to take off , the cyclostimulator s failed and the creature attacked , unwilling to let them leave with the minerals on board . The Doctor gained the confidence of Salamar and his right - hand man , Vishinsky , by instructing them to link the atomic accelerator to the force field , allowing them to repel the attack . The Time Lord negotiated with creature , promising to return the all the anti - matter . Salamar had the minerals jettisoned , but Sorenson secreted a canister . He became infected by the anti - matter and degenerated into what the Doctor labelled " anti - man " . Bestial in appearance and savage in act , Sorenson killed three of the crew : Morelli , De Haan and Reig . The ship managed to travel some way off the ground , but then the pull of gravity began to increase , pulling the ship back towards the planet due to the minerals continued presence on board . The ship was set to collide with the surface . Due to Salamar ' s mishandling of the affair , and his attempts to pin the blame on the Doctor and Sarah , Vishinsky assumed control . The deposed Controller turned on his comrades , killing one and forcing them to open the doors of the ship , allowing him to pursue Sorenson . The professor killed Salamar , who dropped an neutron accelerator he had intended to use , creating pure anti - matter duplicates of Sorenson . These created havoc on the ship , attacking the crew . The Doctor gathered the remaining anti - matter and , taking Sorenson too , returned in his TARDIS to the planet ' s surface . He returned the minerals and sent the infected scientist to the anti - matter dimension . The promise having been kept , the duplicates vanished and Sorenson was returned to his former self . Vishinsky hoped the ship would be able to receive an emergency refuelling after they had travelled closer to home . Professor Sorenson , having lost most of his memory , was convinced by the Doctor that he had been looking into harnessing the kinetic force of planetary motion as a new alternate power source . ( TV : " Planet of Evil " ) This , however , corrupted the Morestrans and sent them up a technological cul - de - sac . ( PROSE : " Zeta Major " ) The Time Lord s apparently considered the Morestran time frame significant enough to warrant its own era in their records . ( AUDIO : " Zagreus " ) One of Clara Oswald ' s splinters was a Morestran . ( COMIC : " Blood and Ice " )