Science Education Standards: Life Science -- Content Standard C: The Interdependence of Organisms

• Evidence for one-celled forms of life -- the bacteria -- extends back more than 3.5 billion years. The evolution of life caused dramatic changes in the composition of the Earth's atmosphere, which did not originally contain oxygen.

Short Description: If intelligent civilizations are out there, how would they communicate with us and what would they say? How would we respond? This investigation of these questions and others uses hands-on activities to teach about the scale and structure of the Milky Way Galaxy. Students study SETI science by using simple astronomical tools to solve some of the problems of sending and receiving messages beyond our solar system.