What Expanded in The Big Bang Theory? Understanding Cosmic Expansion

Explore how The Big Bang Theory describes the universe's expansion from a hot, dense state.

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The Big Bang Theory explains that the universe began from a very hot and dense state and has been expanding ever since. This expansion involves space itself, not just the matter within it, stretching out and causing galaxies to move away from each other. This theory helps explain the observable redshift in light from distant galaxies.

FAQs & Answers

  1. What is The Big Bang Theory? The Big Bang Theory is a scientific model explaining how the universe originated from an extremely hot and dense state and has been expanding ever since.
  2. How does cosmic expansion affect galaxies? Cosmic expansion causes galaxies to move away from each other, leading to observable redshift in the light we see from distant galaxies.
  3. What evidence supports the Big Bang Theory? Evidence supporting the Big Bang Theory includes the cosmic microwave background radiation and the observed redshift of galaxies.
  4. What happens to the universe as it expands? As the universe expands, the space between galaxies increases, leading to changes in galaxy formation and distribution over time.

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If you enjoyed learning about cosmic expansion, check out our other videos on the origins of the universe and theories in modern physics for a deeper understanding of the cosmos.

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