Crash Course Pods: The Universe Ep. 1: The First Fraction of a Second
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Apr 24, 2024 Dr. Katie Mack and John Green discuss the origins of the universe, emphasizing that humans are made of Big Bang material. They explore the concept of matter-antimatter imbalance, cosmic observations supporting the Big Bang theory, the universe's expansion, cosmic inflation, and the role of hydrogen in the early universe's evolution.
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The Mystery of Stuff
- The universe having stuff is unexpected.
- Current theories suggest there should be equal parts matter and antimatter, annihilating each other.
Early Universe Knowledge
- Scientists understand the universe's first fraction of a nanosecond.
- Evidence supports theories about this early period, with some uncertainty before that.
Big Bang Theory Explained
- The Big Bang Theory describes a hot, dense early universe that has been expanding and cooling.
- This is based on observations of distant galaxies moving away and light redshift.