ASTR 1100 Lecture Notes - Lecture 11: Strong Interaction, Chromosphere, Coronal Mass Ejection
Document Summary
99. 8% mass of solar system belongs to the sun. Very enormous and without the sun, human beings wouldn"t be alive. Mass of sun => 1. 99 x 10 tot he power of 30kg. Diameter of sun => 1 400 000km. => 71% hydrogen, 27% helium, 2% all heavier elements. Creates more energy per seconds (3. 9 x 10 to the power of 26w) => which takes 10 years for earth to make. E = mc2 (e- energy; m- mass; c- speed of light) => 3 x 10(8) m/s. Sun was able to sustain a ton amount of energy for many billions of years because tiny mass can create a ton of energy per second (using the equation). Sun has 15 million kelvin in the core. Hydrogen fusion => thermonuclear fusion occurs when hydrogen turns in helium. Four hydrogen will fuse into one helium + gamma rays (energy)
