- #1
Guybrush
- 4
- 0
Hi,
I have been pondering a special relativity question about the concept of simultaneity when moving at speed of light.
Say for instance I took a round trip to Alpha Centauri 4 light years away, traveling at the speed of light both out and home (using negligible time to turn around). Then no time would have passed for me, while 8 years have gone by on Earth, but does that imply that everything that happened on Earth in the meantime happened simultaneously as seen from my perspective?
From what I know the answer to the question above is 'no' because time like events can never appear to be simultaneous to any observer. Yet, it still seems to me that if 8 years passed on Earth, and no time passed for me, then everything that passed in-between should be simultaneous.
I realize that this is just an example of the twin paradox, and I feel I can make sense of it when the round trip is made below the speed of light, but not when traveling at the speed of light.
Thanks in advance for your help :)
I have been pondering a special relativity question about the concept of simultaneity when moving at speed of light.
Say for instance I took a round trip to Alpha Centauri 4 light years away, traveling at the speed of light both out and home (using negligible time to turn around). Then no time would have passed for me, while 8 years have gone by on Earth, but does that imply that everything that happened on Earth in the meantime happened simultaneously as seen from my perspective?
From what I know the answer to the question above is 'no' because time like events can never appear to be simultaneous to any observer. Yet, it still seems to me that if 8 years passed on Earth, and no time passed for me, then everything that passed in-between should be simultaneous.
I realize that this is just an example of the twin paradox, and I feel I can make sense of it when the round trip is made below the speed of light, but not when traveling at the speed of light.
Thanks in advance for your help :)