I often look up at the sky and wonder how far away this or that star/object is. I know that most discernible stars are in our neighborhood, but I have a hard time figuring out just how close they are.
Is there a map/graphic that would map all the objects we can see with a naked eye in our...
No no, I did not imply any connection there, and maybe I understand this flatness the wrong way. Disregard this part.
To rephrase, does the visible universe to the best of our knowledge seem to be expanding at an equal rate in all directions, or are there points in the sky where farthest...
Thank you, too!
To quote Wikipedia:
"The visible universe is thus a sphere with a diameter of about 28 billion parsecs (about 93 billion light-years)."
With the universe being as good as geometrically flat, are there any visible "dents" in this observable sphere, where the farthest...
Thanks for your answer! Perhaps I tried packing too much in one little question; what I wanted to ask was whether there is a certain distance beyond which any proper motion is minuscule in comparison to the expansion of space, and thus undetectable. I suppose this then ties into the matter of...
Hello!
I've juggled these questions around my mind for a few days now and so far haven't been able to google any useful information:
1. What is the approximate 3D shape of the observable universe? The Wikipedia article on this subject talks about weird stuff, like a "flat universe" and...