- #1
Astro_Will
- 12
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Earlier today I was on youtube when I saw this comment
I know that no matter what you wouldn't be able to see Earth in that much detail but that's not the point. Would time dilation keep you inside the visible spectrum (but still slightly blue shifted)? Assuming you were able to see the full spectrum would things appear significantly sped up or would your time slowing down make them seem to move only slightly faster? Does time dilation even apply here?
I went to respond to this saying that the light would blue shift out of the visible spectrum and you wouldn't be able to see anything. But then I thought about time dilation from relativity and wondered if the slowing down of time would be significant enough to keep the view of Earth inside the visible spectrum. Or does the Doppler effect not apply here for some reason. Or if I am just misunderstanding relativity all together.Consider you are sitting on a planet 100 light years away from Earth and point a very powerful telescope directly at it. You see how the Earth looked like 100 years ago since light from "today" hasn't reached the planet I am sitting on yet. Now I start moving towards Earth with a speed close to the speed of light while still pointing the telescope at earth, Would everybody run like crazy and skyscrapers rise very fast? Would time speed up from my point of view?
I know that no matter what you wouldn't be able to see Earth in that much detail but that's not the point. Would time dilation keep you inside the visible spectrum (but still slightly blue shifted)? Assuming you were able to see the full spectrum would things appear significantly sped up or would your time slowing down make them seem to move only slightly faster? Does time dilation even apply here?