FANDOM

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.

They didn't have to go to the next year in "Aliens of London". They didn't even intend to. The Doctor got his navigation wrong (again!). He'd intended them to arrive 12 hours after they'd left & told Rose that it had been 12 hours. He then discovered he'd got it wrong & it was actually 12 months. By that point, though, it was too late to correct the error because Rose had already interacted with her mother Jackie. That made Rose's absence for a year an "established event" that couldn't be changed without creating a paradox.