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List view record 1: Understanding the Universe: An Introduction to Astronomy, 2nd Edition. Episode 72 Expansion of the Universe and the Big Bang [eFilm]List view anchor tag for record 1: Understanding the Universe: An Introduction to Astronomy, 2nd Edition. Episode 72 Expansion of the Universe and the Big Bang [eFilm]
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Understanding the Universe: An Introduction to Astronomy, 2nd Edition. Episode 72 Expansion of the Universe and the Big Bang [eFilm]

2024
The Universe can be thought of as expanding into a mathematical dimension to which we have no physical access. Even an infinite Universe can expand, becoming less dense. The expansion suggests that there was a hot, dense beginning long ago-a Big Bang.
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