The Astronomy Lesson

Today was the last day of the astronomy course that a friend of mine is teaching, and three others include myself, do small segments at each class, talking about an astronomy topic that interests us. This is Sue, one of the other astronomers giving a lesson on what causes solar eclipses and lunar eclipses. You can see a model of the earth at right, and a very tiny moon and its shadow on her hand. The class was a lot of fun, with all of us working together at each session.