How were there two Martys in 1955 in Back to the Future 2?
88387
Why was Marty present in his jump to 2015 in Back to the Future 2?
68293
Time dilation and twin paradox: If they twins were speaking on a phone of some kind, how would each other's voices sound?
35055
Looking for two stories about a telekinetic boy
154833
Is it possible to have two familiars?
151751
How to distinguish "two previous" from"previous two"?
100690
Does superluminal travel imply travelling back in time?
99514
When does the two cars meet
50825
Time travel film: character with male and female reproductive organs is taken back in time by a barman who turns out to be themselves
74649
During the Time War why didn't the Daleks blow up at least one TARDIS while in the Time Vortex?
112710
Expected Number of coin flips for 2 consecutive heads for first time.
624
Title of 80's movie: future-era timetraveling humans go extinct and rescue/kidnap todays air crash victims
108569
Time dilation - why the observers see each other the slow one but then one of them is older or younger?
132618
In Back to the Future Part II, why is old Biff in a lot of pain?
140576
Time reversal symmetry and T^2 = -1
1624
Past plans for the future
153165
Two electron beams exert different forces on each other depending on frame of reference?
24991
Why Is Subtracting These Two Times (in 1927) Giving A Strange Result?