Relativity 110a: Cosmology - Introduction to Modern Cosmology

Full relativity playlist: https://www.youtube.com/playlist?list=PLJHszsWbB6hqlw73QjgZcFh4DrkQLSCQa Powerpoint slide files: https://github.com/eigenchris/MathNotes/tree/master/Relativity Leave me a tip: https://ko-fi.com/eigenchris Einstein's 1917 paper: https://einsteinpapers.press.princeton.edu/vol6-trans/433 Friedmann's 1922 paper: https://wwwphy.princeton.edu//~steinh/ph563/friedmann.pdf Einstein's objection + retraction: https://einsteinpapers.press.princeton.edu/vol13-trans/301 https://einsteinpapers.press.princeton.edu/vol14-trans/77 Lemaître's 1927 paper: https://academic.oup.com/mnras/article/91/5/483/985165?login=false Hubble's 1929 paper: https://www.pnas.org/doi/full/10.1073/pnas.15.3.168 Ralph Alpher's 1948 CMB prediction paper: https://sci-hub.hkvisa.net/10.1103/PhysRev.74.1577 0:00 Introduction 1:35 Einstein's 1917 cosmology paper 9:46 Friedmann Equations 14:38 Galactic Redshift 18:54 Lemaitre & Hubble propose an expanding universe 22:44 Cosmic Microwave Background 28:10 Dark Energy and Universe's Accelerating Expansion 31:41 Summary