(B). The space that is between the Big Bang Center and the outward moving spherical shell.
(C). The Outer Edge of the spherical shell with empty space beyond.
(D). The Inner Edge of the spherical shell.
(E). All the galaxies of The Universe that make the spherical shell.
(F). The Milky Way galaxy with the Solar System within it where astronomers on Earth are looking outward from their inside vantage point in all spherical directions at billions of galaxies that appear to be expanding away from them - and each other - with no visible center or edge.
(G). The farthest spherical distance that astronomers can observe.
So interesting. I saw a video just today explaining that due to the expansion of the universe, at some point in the future (i think 2 trillion years), we will be so far away from galaxies outside of the local supercluster that it will be impossible to see them. That is, if humankind exists for that long. Crazy stuff!
I am now ready to explain the universe drawing and the universe drawing index and how they prove the shape of the universe drawing. But I don’t seem to be able to post.