ASTRON 2B03 Lecture 3: Astron 2BO3 Lecture 3 Planets
18 Mar 2016
School
Department
Course
Professor
Document Summary
Atmosphere - critical for life on earth, otherwise temperature would be more dramatic, hard for life as we know it to exist. Atmosphere keeps the surface from becoming too hold/cold. 150 c range (-90 to 60: we must have water in order to have life. You can see craters where meteors have hit it, almost all are still there. Huge temp range because it has no atmosphere. You can actually see the landing site of apollo 17 on the earth, without an atmosphere nothing exists to disturb the dust . You can t 50 moons inside the earth. The red planet -- a cross b/w earth and the moon. An ice cap on the north pole, made of carbon dioxide ice (dry ice) Big ball of gas similar composition as the sun. Io orbits close to jupiter, so much so that the gravitational pull of jupiter affects io: with dark skies you can see jupiter"s largest moons with binoculars.
