In later episodes, where the Doctor travels into the future, the space-time vortex in the opening credits appears red instead of blue. Fans speculate that's because light emitted by an object ...

Mrs. Flood is one of Doctor Who’s biggest ongoing mysteries, but the show’s recent trailer seems to hint at her true identity.

If you are using an iPhone or iPad, your screen will Auto-Lock after a set amount of time while playing the ... to navigate the TARDIS through the vortex. On desktop you can use a mouse.