Traveling to the future is possible, but not to the past?
11307
Is time travel possible? Is it possible to go back in time?
13770
Do "in future" and "in the future" imply different meanings?
136717
Will we ever be able to view the past?
7209
Present continuous and simple future
91385
Does quantum mechanics allow faster than light (FTL) travel?
67327
Does this count as moving faster than light?
5719
Would it be possible to change past perfect into simple past
36778
future or present with when
69597
Is “might could” a correct construct?
26264
Short story ID: Bouncing-Ball Time Travel
125571
Practical time travel: time dilation above the event horizon
55426
In what type of world is free will possible, if at all?
84790
Can I measure a journey time < 100 years on a 100 light year voyage?
143162
Why didn't the mirror universe's tech progress past the main timeline's?
115987
How can time be relative?
8900
How come the portkey at the maze didn't transport "at a prearranged time"?
93087
How far back in time could I travel and still be understood?