Association with National Mathematics and Science Standards

Preface

Foreword - The Story of Andromeda

Introduction

I. The Visible Lives of Galaxies

1. The Characteristics of Galaxies
2. How Galaxies Get Their Names
3. The Components of a Galaxy
4. The Clustering of Galaxies

II. The Hidden Lives of Galaxies

1. Hidden Objects
2. Hidden Mass
3. Possibilities for Dark Matter
4. Formation of Galaxies

III. Classroom Activities

• Activity #1 - How Big is the Universe
• Activity #2 - Identifying Galaxies
• Activity #3 - Classifying Galaxies Using Hubble's Fork Diagram
• Activity #4 - Identifying Unusual Galaxies
• Activity #5 - Open Clusters Versus Globular Clusters
• Activity #6a - Modeling Mass in the Solar System and a Galaxy
• Activity #6b - Evidence for Hidden Mass
• Activity #6c - Getting a Feel for Rotation Curves
• Activity #6d - Weighing a Galaxy
• Activity #7 - Dark Matter Possibilities
• Activity #8 - The Universe as Scientists Know It
• Activity #9 - Seeing as Far as You Can See

IV. Student Worksheets

V. Glossary

VI. About the Poster

• Poster Credits

VII. References and Other Resources