Ask a question in the box below, or search using the box above.

As you enter your question, our massive, TARDIS-sized computers will search out other similar questions. So be sure to check the list that pops up before asking your question. Once you've decided that your question has not been asked before, push the not-so-threatening blue button below.

If you want to ask questions needing speculation or people's opinions, please do it in our Watercooler forum, not here. The main Q&A space is for questions with definitive factual answers. Thanks!

To avoid spoilers in the main Q&A section, please do to not post information about stories that have not been released in the UK, or ask for information about stories that have not yet aired there.

In "A Good Man Goes to War", River Song says the word "Doctor", in the context of referring to someone who helps, came from the Doctor, the Time Lord, presumably due to his presence throughout history. However it is not known which incarnation of the Doctor was responsible (directly or indirectly) for starting the ball rolling. That said, in "Nothing O'Clock" (short story), the Eleventh Doctor travels to a point prior to the original Big Bang. This is the earliest known presence of the Doctor, which would make this incarnation the "first Doctor in history".