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The original was posted on /r/nostupidquestions by /u/chipsndgravy on 2023-09-09 16:04:38.
I'm going off the fact of light-years, the fact that if you're far enough (65 million light years away to be exact) from earth and if you had a good enough telescope that you could see dinosaurs. Continuing from that thought - we are able to see 46.5 billion light-years into space and can render pretty good pictures of things far away in space. 4.65 billion light-years is obviously more than 65 million light-years. Is the dinosaur rule still relevant when we're looking at other things so far away?
Edit: Thanks again for teaching me. It's also pretty cool that if anyone else is seeing our planet like we see there's (from imagery and stuff) that they're not going to see the human race and depending on where they would live - they might not see an earth at all.
Bonus question:
Let's pretend humanity has made up some super computer/telescope and warp speed to travel x light-years away. If we know we would need to travel 65 million light-years away to see dinosaurs, could we use that law and manipulate the distance to view earth at different times at will?
Like.. think of any mystery - the prymids for example, could we use that rule to view how they were actually built if we had a good enough telescope/computer?