General Astronomy - Why the Sun Shines

This lecture explains why the Sun shines, focusing on nuclear fusion in its core, the proton–proton chain, and the balance between gravity, pressure, and energy production. It also introduces the Sun’s long-term evolution and changing luminosity.

Syllabus

Introduction
The Sun
The Cell
Ancient People
Einsteins Theory
Ionization
Protonproton chain
Deuterium
Calculation Check
Concept Check
hydrostatic equilibrium
thermal equilibrium
energy transport
solar thermostat
why does the sun shine