BTW, you can post cosmology questions on
astronomy.stackexchange.com/questions It's less busy than Physics.SE, so questions stay on the front page longer. And most of the Physics.SE members who know about cosmology & astrophysics tend to visit Astronomy.SE. It's not a good idea to cross-post the same question to two or more sites at the same time, but if you still don't get an adequate answer in a week or two, consider posting a new version on Astronomy.SE.