Module 9: The Solar System

Solar SystemWhile you may consider the place that you rest your head at night to be your home, you belong to a bigger, more complex home in the universe - the Solar System. In this module, you will explore this larger address. You will begin by exploring how scientists believe the Solar System formed from a contracting nebula some 4.6 billion years ago. Then, you will begin with the planet closest to the Sun and travel outward to the remote reaches of the Solar System, studying characteristics of each of the eight planets. In addition, you will explore dwarf and other members of the Solar System, like meteors, comets, asteroids, and trans-Neptunian objects. All of these celestial objects have their own systems of classification to help organize and structure their study.

Getting Started

Before you begin your study of the Solar System in this module, take a few moments to consider the following questions: how has your perception of the Solar System changed since you were a small child? Has your idea of your place in the Solar System changed as you have grown to a young adult? It may change even more as you learn about Earth's relative size and impact in the universe.

 

Key Vocabulary

Glossary icon
To view the definitions for these key vocabulary terms, visit the course glossary.

asteroid belt Kuiper Belt planet
asteroid law radioactive dating
atmosphere lunar highlands revolution
comet lunar maria rill
crater mass rotation
crater meteor Solar Nebula Theory
density meteoroid Solar System
geology moon theory
International Astronomical Union planetary motion Trans-Neptunian object