- #1

markterry

- 1

- 0

- TL;DR Summary
- Not Sure

Just joined because I have been unable to find an explanation: please avoid comments about FTL speed since they don't pertain to the question. The question:

A planet is 30 light years away, so when viewing it from earth we are seeing it from "30" years previous. Now, we travel 30 years at light speed and should basically arrive when that light (reflection) left. The question is: if we traveled back to earth at double the speed of light would we not see the same light as it was before we left earth? Where is the time dilation?

A planet is 30 light years away, so when viewing it from earth we are seeing it from "30" years previous. Now, we travel 30 years at light speed and should basically arrive when that light (reflection) left. The question is: if we traveled back to earth at double the speed of light would we not see the same light as it was before we left earth? Where is the time dilation?

Last edited by a moderator: