As the Big Bang was fleshed out, there were a couple of nagging problems. One is the density problem. If you start off with just
How has cosmology developed the discovery of the cosmic microwave background?
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When it comes to star clusters, size and age matter. Globular clusters are much more massive, and they are usually much older. Open clusters have comparatively fewer stars and are comparatively young – in astronomical terms, that is… And no, there is
