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Há 1 dia · B) Today. C) Era of stars and galaxies. D) Era of basic particles. E) Era of reionization. Beginning with the Big Bang, create a timeline that traces the full history of a proton that came to be a part of the Earth, say, in the nucleus of a carbon atom. Start. -The proton is formed about 3 minutes after the Big Bang.
Há 1 dia · the universe continues to expand forever, but ever more slowly, coming to a stop only after infinite time. For this model, the mass-energy density is exactly equal to the critical density. the universe expands forever at a constant rate. This would occur in an empty universe. universe accelerates at a faster and faster rate forever.
