However they were never referred to by this name in the story itself. In the parallel world, the Doctor meets alternative versions of people he knows, including the Brigadier, Liz, Benton and ...

( NewsNation) — Theoretical physicist Michio Kaku supports the concept of parallel universes, but he says people shouldn’t ...

Documentary lead-in to the premiere episode of the 2005 revival of Doctor Who. Features cast interviews, behind the scenes footage, and a look at the Doctor's past.