Lecture_6
Physics 6C Photons Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB.
AST101 Recurring Themes in Astronomy. Assumption of Uniformity Physical laws and constants do not change with time or location.
OUR SUN THE CLOSEST STAR. Composition of the Sun The Sun is composed of at least 80 of the elements found on Earth. Sun is mostly composed of 91.2% Hydrogen,