Time travel, is it possible?
11307
Is time travel possible? Is it possible to go back in time?
48497
Doesn't entropy increase backwards in time, too?
42489
How to disable "time travel" entirely?
90400
Would it be possible to transmit information through gravitational waves?
14864
How can Kitty Pryde achieve time travel with her phasing abilities?
89463
Since the Earth is moving through space, do we experience time dilation?
84790
Can I measure a journey time < 100 years on a 100 light year voyage?
130124
Is it possible to learn about an event that occurred outside of your observable universe?
10132
Time Traveler steps on a butterfly, changes everything
26264
Short story ID: Bouncing-Ball Time Travel
91265
Has the speed of light changed over time?
61329
Has everything we see happened in the past?
116067
Back To The Future: moving in time but not in space?
74443
YA Time travel/teleportation novel. Plot required using helmet (or other head gear)
60364
Universe Expansion as an absolute time reference
13757
Is there a device that could measure the speed of time?
81212
Is there really time reversibility in physics?