Summary: Up-to-date night sky activity beginning March 2, 2010 through March 15, 2010. In this episode: What are super massive black holes? How do we "see" them and are they a danger to us?
Summary: Up-to-date night sky activity beginning March 2, 2010 through March 15, 2010. In this episode: What are super massive black holes? How do we "see" them and are they a danger to us?