Summary: Up-to-date night sky activity beginning February 16, 2010 through March 1, 2010. In this episode: What is the Sloan Digital Sky Survey and what did it help us to understand about our Universe?
Summary: Up-to-date night sky activity beginning February 16, 2010 through March 1, 2010. In this episode: What is the Sloan Digital Sky Survey and what did it help us to understand about our Universe?