The Big Bang Theory

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Covers: Definition of the Big Bang Theory · Universe beginning from a singularity · Initial conditions (extreme temperature and density) · Evidence: Redshift, Doppler effect (light) · Hubble’s Law (qualitative understanding) · Formation of atoms (hydrogen, helium) · Formation of stars and galaxies · Role of gravity in structure formation · Definition of CMB · Discovery significance · Evidence supporting Big Bang · Formation of galaxies · Lifecycle of stars (basic idea) · Supernova (basic concept) · Redshift of galaxies · Cosmic microwave background radiation · Abundance of light elements (H, He) · Steady State Theory (contrast with Big Bang) · Why Big Bang is widely accepted · Continued expansion of universe · Possible scenarios: Big Freeze , Big Crunch, Big Rip (intro only) · Formation of elements (hydrogen → heavier elements) · Role of stars in element formation · Link between astrophysics and atomic structure

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