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.

There is a dispute as to what a Gallifreyan is. Some people believe that they are different from Time Lords, or Time Lords are a subspecies. Thus, the answer varies with one's definition of a Gallifreyan.

According to "The Doctor's Wife" at least one Time Lord, the Corsair, is known to have changed sexes more than once during regeneration. There is also a female incarnation of the Master who is known as Missy.