Brainstorm/ Prior Knowledge
I know that the television show Doctor Who has been going on for more than fifty years, the fifty year mark being in November last year. There have been many different actors playing the Doctor (the main character) because the Doctor can regenerate, or change form. Some the recent actors that have played the Doctor are: Christopher Eccleston, David Tennant, Matt Smith, and Peter Capaldi.
The Doctor travels in a TARDIS, which stands for Time And Relative Dimensions In Space. He