I wonder if there is a meaningful difference between your example, and the technology with which the JWST uses to view light in the past. Rather, if the later is something we can use for time travel ;)
The JWST looks at light which has been travelling for a long time. The only special thing about it, compared to other telescopes (or even your eyes), is the range of frequencies it’s looking at - the longer light travels, the lower the frequency becomes (due to the expansion of the universe).
So it’s the same basic phenomenon - information has a max speed, so you’re always interacting with the past state of any object.
I wonder if there is a meaningful difference between your example, and the technology with which the JWST uses to view light in the past. Rather, if the later is something we can use for time travel ;)
The JWST looks at light which has been travelling for a long time. The only special thing about it, compared to other telescopes (or even your eyes), is the range of frequencies it’s looking at - the longer light travels, the lower the frequency becomes (due to the expansion of the universe).
So it’s the same basic phenomenon - information has a max speed, so you’re always interacting with the past state of any object.