NATS 1740 Lecture Notes - Lecture 1: Interstellar Cloud, Virgo Supercluster, Nuclear Fusion

• School: York University
• Department: Natural Science
• Course: NATS 1740
• Professor: Michael De Robertis, Alireza Rafiee

Document Summary

Chapter 1: a modern view of the universe. *understanding goals: - our place in the universe (geographical place => but beyond that we have meaning and purpose in life) Cosmic address: earth => solar system => milky way galaxy (one of the largest in) => local. Group => local supercluster => observable universe (billions of light years away). + rocky, icy, the gravity keeps the gas together. Moon (satellite) could be a planet: rocky, icy object orbits the planet. Asteroid (was mistaken as stars but not): small rocks, leftovers from the formation of the solar system, orbits a star. Comet: small and icy, leftovers, orbits a star (primarily the sun) Solar (star) system: all the materials orbit this (planets, moons) Nebula (outside of solar system): an interstellar cloud of gas/dust, formed from stars and planets.