33.4 The Life Cylce of Stars

The Life Cycles of Stars (1 of 3)

Within any star there are two fundamental forces fighting against each other. First, there is the inward pulling force of gravity. Second, there is the outward pushing force resulting from thermonuclear fusion. Duration: 4:26.

The Life Cycles of Stars (2 of 3)

This lesson follows the projected path of our Sun within the Hertzsprung-Russell diagram as it grows to a red giant and then collapses to a white dwarf. Duration: 7:31.