This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on our attempts to reach intelligent life by sending messages into space. Students look at a visual of the message that has been sent from the Arecibo radio dish in Puerto Rico, and discuss what it means and the possibility of getting a reply. It includes objectives, materials, procedures, discussion questions, evaluation ideas, suggested readings, and vocabulary. There are videos available to order which complement this lesson, an audio-enhanced vocabulary list, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.