Summary: Up-to-date night sky activity beginning June 21, 2011 through July 4, 2011. In this episode: What are comets? What are they made of and how come they look like that? Learn about these small-bodied objects and find out why they're important.
Summary: Up-to-date night sky activity beginning June 21, 2011 through July 4, 2011. In this episode: What are comets? What are they made of and how come they look like that? Learn about these small-bodied objects and find out why they're important.