What is Astronomy? What is Science? What is the course all about?
Brief introductory remarks after going over course mechanics on the
first day of Astronomy 161 for Autumn Quarter 2007. Recorded 2007 Sep
19 in 1000 McPherson Lab on the Columbus campus of The Ohio State
University.
Sep 2006
Lecture 2: Astronomical Numbers
Before we can begin our exploration of astronomy, we need to develop a
common language for notating large numbers, and introduce the basic
units of length, mass, and time that we will use throughout the quarter.
We will first re-introduce the basic metric system, explaining how t ... Show More
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