Could you see dinosaurs by getting 100 million light years from Earth and using a very powerful telescope?

The best theoretical way to accomplish this would be to find a black hole that is 50 million light years away and to look at the light that is slingshoted back to us. Light that left the Earth 100 million years ago would have traveled out to the black hole, slung around it, headed back, and would just now be arriving back at Earth for us to see.

Now for the bad news. Almost all light from the Earth is reflected sunlight. The sun can only put out so many photons of light. A certain percentage are absorbed by the two trips through the atmosphere (one trip to hit the dinosaur, and another after it's reflected off). Another percentage is lost as scattered light and not reflected off the dinosaur. Still more light is lost as it impacts the interstellar gases. Finally, we are looking at very unidirectional light, which is a very small percentage of all the light that was reflected in the first place (most went off in other directions).

What this boils down to is that we'd be lucky to spot 1 photon of light that has made the trip, not to mention the millions of photons we'd need to get anything resembling a picture. Even if we could get enough photons, we'd be exposing that photo for such a long period of time, that the movement of all the dinosaurs would blur together.

No, because of the fact dinosaurs died out sixty 5 million years in the past. you would be approximately 5 million years too overdue. in case you have been between sort of sixty 5 million and 230 million gentle years away, you're able to certainly see dinosaurs on the earth, in concept. In prepare, actual obstacles on how telescopes artwork could recommend that resolving a individual dinosaur at such an excellent distance could require a ridiculously super telescope. No, larger than that. we are speaking reflecting dishes the size of finished famous individual structures right here.

Sorry mate, it's impossible (as far as we know) to travel faster than light. In fact, it's exactly as impossible as building a time machine - almost any FTL drive can be rewired to make a time machine, and vice versa. If you travelled 100 million light years from Earth at near lightspeed, it would take you 100 million years, and all you'd see is what happened shortly after you left.

On the other hand, if some aliens left a sufficiently large mirror in the right place 50 million years ago, then yes, you could see dinosaurs. So don't lose hope.

Definitely plausible. If you could catch the light coming off of earth 100 million years ago, you could see what happened 100 million years ago.

Yes, if you could wait 100 million years.

only if you could instantaneously travel to that point right now and not spend 100 million years getting there

yes this theory would work fine except the problem is you can't beat light as far to say it but you could go in too the Future

Nope

To whomever said the theory is correct, how exactly do you come to that conclusion?

In order for him to do what he's saying, he would need to travel faster than the speed of light. ie: impossible.

Sure, and you can be a billionaire tomorrow. All you need is a way to instantly make a billion dollars.