A written transcript of the first 40 minutes of audio for this lecture (covering the syllabus and introduction to course materials) is available for reference.

Time Stamp	HTML Slide
[00:00]	Syllabus
[06:29]	Policies
[08:27]	Self-Review Library (homework and quizzes)
[14:25]	Lab Exercises
[20:44]	Schedule
[22:06]	Assignments
[22:53]	Extra Credit
[29:50]	Grades
[30:27]	Audio Recordings
[31:20]	Self-Review Library	(pause to load a Self-Review Quiz on Lecture 1)
[39:39]	The Contents of the Universe
[39:47]	Sizes of Astronomical Objects	(pause to sort four smallest objects)
[41:44]	Object A
[46:04]	Object B
[46:39]	Object C
[47:32]	Object D	(pause to sort next four smallest objects)
[48:25]	Object E
[49:00]	Object F
[49:07]	Object G
[49:22]	Object H

Learning Objectives

1. Review and absorb the course requirements and syllabus.

2. Become comfortable estimating the sizes of astronomically relevant objects across a large range of sizes, from the very small (sub-atomic particles) to the very large (super-clusters of galaxies like the Milky Way).

3. Realize that on every size scale, the Universe is primarily empty space.

4. Understand that on every size scale, the Universe contains a large number of objects with similar properties.