DavidDavid: Your sighted cousin, VeldaVelda, lying next to you or RalphRalph, sees the (approximate) "chart". But time is relative, so when’s now? CoryCoryCory over here runs on slower time because he's going faster. So whose chart do you want? The speed of light is constant, so there may be a Universal chart based on that. (We need an astronomer here). But when we look at the stars we don't see what's really there. And from a different point in space our galaxy would look like the other side of a completely different Frisbee.

It gets even more mysterious if you zoom down to the quantum level. Everything is more or less everywhere until you "look" (detect or measure), at which point things instantaneously (faster than light) appear where you see them, and cease to be where they might have been if you hadn't looked. Chart that.

DavidDavid: I’m no astronomer, but here goes: Imagine that you’re deaf and blind and lying on a beach with your feet in the water. You gotta determine the size and positions of all the boats, swimmers, fish, etc., based upon the waves lapping on your toes. Some boats will be long gone when the waves hit you; others will be there, but the waves haven’t arrived yet. And was it a big boat far away, a small boat nearby, or just a fish? Most everything is not where it seems to be. Now comes the slightly tricky part—imagine how all these waves would hit the toes of your blind twin, RalphRalph, on a distant shore. Now convert boats to galaxies, swimmers and fish to stars, and you got it.