In the parallel universe, is there also a parallel doctor?
50826
If in Pete's World there's no Doctor, how is there a Torchwood?
141112
Are other human spirits reincarnated in the world of Avatar: The Last Airbender?
149442
What are the other versions of earth in the Marvel universe/multiverse?
89723
Is there an iconic monster or creature for each alignment?
71838
How does River Song know The Doctor's name?
32053
Why can’t the Doctor’s companions understand babies and horses?
136893
Effects of quantum computing on parallel universes
103920
Supersymmetry vs multiverse
15335
Is there a difference between DR/evil and DR/unholy?
121056
Married Couples in the Star Trek Universe?
106975
can we have a parallel earth made of dark matter?
78064
Is it true that The Doctor can only regenerate 12 times?
154833
Is it possible to have two familiars?
45842
When is it appropriate to refer to someone as Dr. [Surname]?
143065
Fine Tuned Universe
58373
Why is it customary to call people with doctoral degrees doctors but not people with masters degrees masters?
16525
How old were each of the Doctor's incarnations?