NATS 1570 Lecture Notes - Lecture 1: Small Solar System Body, Solar System, Stellar Atmosphere

• School: York University
• Department: Natural Science
• Course: NATS 1570
• Professor: Mary- Helen Armour

Document Summary

Introduction to the solar system podcast notes: planet comes from the greek word wanderers, planets- mercury, venus, earth, mars (inner) jupiter (gas giants), saturn (gas giants), ), pluto (5), eris (1: sun provides most energy that powers life and climate on earth, suns gravity holds everything together in solar system. In 2006 the international astronomical unions came up with planet criteria and booted. Jupiter is used as our basis for comparison for outer giants. Lesson notes: earth is 107 m, sun is 10 9 m. Jupiter"s outer atmosphere consists of hydrogen (86. 1%), helium (13. 8%), and traces of methane (ch4), ammonia (nh3), ammonium hydrosulfide (nh4sh), and water vapor (h2o) Jupiter has no solid surface but gas makes it denser towards center. Objects in the solar system textbook notes: planets display prograde motions (move counter clockwise around sun) The sun: pluto is considered a planet.