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Search options not deleted user 23387

Questions involving the physics of the universe, especially the nature of astronomical objects, energy fields, and/or regions, rather than their positions or motions in space.

4 votes
1 answer
6k views

Angular Diameter Distance

However when I was reading my textbook, Astrophysics in a Nutshell by Dan Maoz pp.220-221, I am having some trouble trying to understand the notion of angular diameter distance to the last scattering surface …
WeiShan Ng's user avatar