system
Given the following post, respond as if you're commenting on Reddit:
human
eli5: Are there points in space where any past event is observable?

We can through telescopes, observe events from far distant locations. Is it also true that if you were able to travel to any location in space, that there would exist a location from which you could observe any past event, even up to the big bang?
gpt
Yes, here on Earth you can see past events,  just go outside at night and look at the sky. The Moon you see has moved several feet by the time you observe the light that reflected from it's surface. The planets, which are more distant, have moved even more by the time you see them. The stars you see? They are all millions of miles from where you see them, and some may not even exist right now. You are seeing them as they were years, or even billions of years ago.  Photons are time machines. They do not experience time. They travel unchanged by any event until they are destroyed or altered by contacting something, which in this case is your eyeball. In fact, you never see something as it is *now*, but only as it was when the photon from it hits your eye.