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Formation of Elements during Big Bang and Stellar Evolution - Coggle…
Formation of Elements during Big Bang and Stellar Evolution
The Big Bang Nucleosynthesis
Occurred around 3 minutes after the Big Bang, formed of the lightest elements (Hydrogen, Helium, Lithium).
Elements formed:
75% Hydrogen
25% Helium
Trace amounts of Lithium and Beryllium
Stellar Evolution
• The process by which stars form, live, and die.
Stages of Stellar Evolution
Main Sequence - Hydrogen fuses into helium.
Red Giant - Helium and heavier elements are fused.
Supernova - Explosive death of a massive star.
Types of Stellar Nucleosynthesis
Hydrogen Fusion
- Primary fuel in main sequence stars.
Helium Fusion
- Occurs in red giants, producing elements like Carbon, Oxygen.
Carbon Fusion
- Occurs in massive stars, producing heavier elements like Magnesium, Neon, and Silicon.
Supernova Nucleosynthesis
- Explosions that create heavy elements like Gold, Uranium.
End Products of Stellar Evolution
Formation of elements like Carbon, Oxygen, Iron, and heavier elements.
Formation of nebulae, where new stars and planets form.
The cycle of element creation continues with each generation of stars.