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Main Evidence for the Big Bang

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Presentation on theme: "Main Evidence for the Big Bang"— Presentation transcript:

1 Main Evidence for the Big Bang
The Hubble Law The existence and properties of the blackbody cosmic microwave background Primordial nucleosynthesis and the observed light element abundances

2 Modern-Day Hubble Law

3 Too Much Helium Our Sun is about 28% helium by mass.

4 Nuclear Reactions in the Early Universe

5 Primordial Nucleosynthesis

6 “Cooling” of the Cosmic Microwave Background

7 Arno Penzias and Robert Wilson

8 Cosmic Background Explorer (COBE)

9 Spectrum of the Cosmic Microwave Background

10 Anisotropy of the Cosmic Microwave Background

11 Current Maps of the Cosmic Microwave Background
WMAP

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