NATS 1740 Study Guide - Midterm Guide: Thermal Energy, Apparent Retrograde Motion, Kuiper Belt

• School: York University
• Department: Natural Science
• Course: NATS 1740
• Professor: Patrick Hall

Document Summary

This chapter is a basic fluff over the concept of astronomy and space, not much to take away from this chapter. It goes over our place in the universe as well as some basic concepts like the big bang, solar systems, galaxies and so forth. At the end of this small chapter it goes over the idea that we can only observe so much of the universe because light takes time to travel. Also it touches on the idea that the universe is expanding why it looks like its expanding away from us. Lastly it covers the concept that we"re always moving in different frames of references. Universe observable universe super cluster cluster galaxy star system solar system. Telescopic observations of galaxies show that the entire universe is expanding, meaning that the average distances between galaxies are increasing with time. The rate the universe is expanding leads to the age of the universe to 14 million years.