AST101H1 Lecture Notes - Lecture 9: Pearson Education, Asteroid Family, The Cooler

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Michael Reid

Document Summary

Ast101 lecture 9 the sun: the nearest star (part 2) *note: e=mc2 shows that mass contains potential energy which at the speed of light squared converts into energy (i. e. thermal energy in the sun"s core). *note: the hydrogen fusion reaction occurs only in the core, also known as the thermonuclear energy core: recall: 5 billion years from now, the sun will begin to shrink at the core due to the exhausted nuclear fuel. The shrinking of the core will cause the temperature to rise. Thus, earth will later become inhabitable because the sun will get hotter and hotter: recall: the following is the reason why the core is so hot, the hot gas pressure attempts to expand the sun, simultaneously, the. Sun"s temperature would make no difference because the sun would be able to go back to its original state and temperature.