Third Doctor See List of non-televised Third Doctor stories. Third Doctor The Third Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by actor Jon Pertwee. Within the series' narrative, the Doctor is a centuries-old Time Lord alien from the planet Gallifrey who travels in time and space in his TARDIS, frequently with companions. At the end of life, the Doctor can regenerate his body; as a result, his physical appearance and personality change. Pertwee portrays the third such incarnation, a dapper man of action of stark contrast to his
The Science of Doctor Who The Science of Doctor Who The Science of Doctor Who is a televised lecture by physicist Brian Cox discussing the nature of space and time as related to the science fiction series "Doctor Who". Cox covers topics including the nature of black holes, time dilation, time as a dimension in which to travel and the possibilities of alien life. The lecture is held at the Royal Institution's lecture hall and interspersed with small segments of Cox on the TARDIS with the Eleventh Doctor, played by Matt Smith. The lecture was released on DVD and Blu-ray on 8 September 2014 as