Stars: Nuclear Furnaces. Elemental Composition of Universe.

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Presentation transcript:

Stars: Nuclear Furnaces

Elemental Composition of Universe

Elemental Composition of Human Body

Nuclear Fusion on Earth 2 H + 3 H 4 He + n + Energy

A Star is Born

Inside a Star

Inside a Star’s Core

Net Result: Fusion of Hydrogen to Helium 2 H + 2 H 4 He + Energy

Production of Carbon: The Triple Alpha Process

The Carbon Fusion Cycle: Production of Nitrogen and Oxygen

Formation of Heavier Elements Fusion in star cores produces all elements up to Iron Supernova explosions produce all elements heavier than Iron

Scattering the Seeds of Life

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