Does time really exist?
29426
Is there a proof of existence of time?
158250
According to special relativity, has the future already happened?
155340
Is Nothing actually imaginable?
144199
Is there a term to describe the physical location of an object, as well as the time in which it exists?
51191
Does a negative number really exist?
38674
Do complex numbers really exist?
100690
Does superluminal travel imply travelling back in time?
156058
Are time loops real?
7863
What is time, does it flow, and if so what defines its direction?
60084
In a very small static universe with only a particle, does it make sense to talk about time?
17450
Doesn't the end of Looper create a time paradox?
93336
Understanding time crystals
54395
Is Poincare recurrence relevant to our universe?
13757
Is there a device that could measure the speed of time?
20698
What's the difference between space and time?
9937
Does time freeze at Absolute Zero?
25827
Does time expand with space? (or contract)