How do you begin a journey?   By taking the first step.  The first step here is to pick a topic that you will research in depth for the semester.  This will aid you in your journey with me during the semester.  Find a topic that will challenge you and allow you to understand our discussions.  Also encounter one with differing points of view; not already decided by the masses. This topic will be the topic of your final destination, the final project.  And explore outside the Solar System as we explore stars, galaxies and our Universe.