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Full Idea
Special Relativity says nothing can travel 'through space' faster than the speed of light. But space itself can do whatever the heck it wants, at least in general relativity. And it can carry distant objects apart from one another at superluminal speeds
Gist of Idea
Space itself can expand (and separate its contents) at faster than light speeds
Source
Lawrence M. Krauss (A Universe from Nothing [2012], 06)
Book Ref
Krauss,Lawrence M.: 'A Universe from Nothing' [Simon and Schuster 2012], p.96
A Reaction
Another of my misunderstandings corrected. I assumed that the event horizon (limit of observability) was defined by the stuff retreating at (max) light speed. But beyond that it retreats even faster! What about the photons in space?
| 12709 | Motion is not absolute, but consists in relation [Leibniz] |
| 6735 | All motion is relative, so a single body cannot move [Berkeley] |
| 21231 | Assume the speed of light is constant for all observers, and the laws of physics are the same [Einstein, by Farmelo] |
| 21230 | The theory is 'special' because it sticks to observers moving straight, at constant speeds [Einstein, by Farmelo] |
| 14613 | Special relativity won't determine a preferred frame, but we can pick one externally [Smart] |
| 20628 | The electric and magnetic are tightly linked, and viewed according to your own motion [Close] |
| 20622 | All motions are relative and ambiguous, but acceleration is the same in all inertial frames [Close] |
| 21109 | Space itself can expand (and separate its contents) at faster than light speeds [Krauss] |
| 14016 | The idea of simultaneity in Special Relativity is full of verificationist assumptions [Bourne] |
| 14019 | Relativity denies simultaneity, so it needs past, present and future (unlike Presentism) [Bourne] |