Astronomy 1021 Lecture Notes - Lecture 2: Anatomically Modern Human, Summer Triangle, Solar System
1 Nov 2017
School
Department
Course
Professor
Document Summary
Beta lyre variables: binary stars, meaning the stars proximity alters their look, i. e. too much light. Largest to smallest: jupiter, saturn (rings make it technically bigger), uranus, It is difficult to accurately scale both size and correct distance. Distance from the earth to the moon. Distance from sun order: mercury, venus, earth, mars, jupiter, saturn, Uranus, neptune, pluto: uranus is 19. 2 au from the sun. Eris was the downfall of pluto, eris was also as big as pluto, why can pluto be a planet but not eris. Eris, pluto, haumea, makemake, ceres are dwarf planets. 1 au, the average distance between the earth and the sun is 15 mill km or 1. 5 x. Light travel time, light years- is a distance. 3 x 108, the fastest thing we know of in the universe. Light year, the distance light can travel in 1 year, 9. 5 x 10 15 m/s.
