- #1
HossamCFD
- 63
- 199
Hi everyone, I am not very knowledgeable in cosmology but I hope you would be patient enough to clarify this issue for me.
I understand that nothing can move through space with speeds higher than the speed of light, however space itself can expand with higher speed. Now I have this, probably silly, idea that i am asking clarification for. If we assume that the current expansion of the universe exceeds the speed of light, that will mean that we are moving from our current place faster than light, right ? If so, then if for any reason the expansion speed decelerates so that light from our previous place reaches us, would we be able to look at the Earth in the past ?
In other words, would the expansion of the universe mean that we are moving relative to any observable frame of reference ? or are our coordinates fixed during this expansion (neglecting the movement of Earth through space) ?
I understand that nothing can move through space with speeds higher than the speed of light, however space itself can expand with higher speed. Now I have this, probably silly, idea that i am asking clarification for. If we assume that the current expansion of the universe exceeds the speed of light, that will mean that we are moving from our current place faster than light, right ? If so, then if for any reason the expansion speed decelerates so that light from our previous place reaches us, would we be able to look at the Earth in the past ?
In other words, would the expansion of the universe mean that we are moving relative to any observable frame of reference ? or are our coordinates fixed during this expansion (neglecting the movement of Earth through space) ?