Rise of Gallifrey
Time And Relative Dimensions In Space
“Up-and-downy stuff in a box!”
A machine that is larger on the inside that is capable of traveling through both time and space. It does so by dematerializing its outer shell and traveling through the Time Vortex.
Invented by the Time Lords, these highly sophisticated devices are now a rarity. Most were wiped out during the Last Great Time War, and the few known remainders are all owned by the last few Time Lords.