Yesterday marked the midpoint of the summer class I am teaching: Introduction to Stars, Galaxies, and the Universe. I knew it was going to be a lot of work but I don’t think I could have possibly understood how much. The content is split more or less between background & stars (two weeks), and galaxies & the Universe (two weeks). We just wrapped up the stars portion with supernovae and the deaths of stars. The summer classes here are intense, two hour lectures five days a week for four weeks. Factoring in somewhere between four to five hours preparation per hour of lecturing and it quickly becomes a sizable investment of time. Oh yea, you also have to write assignments, quizzes, and tests.
Getting to bed by midnight is becoming a luxury, reserved for the weekends! However, having said that I am very much enjoying the experience. I am fortunate that my advisor is okay with me taking four weeks off from research so I can focus on the class (and get a few sweet hours of sleep each night
). Teaching a class has been very informative, not just in terms of teaching, but also in terms of appreciating the broad knowledge base one needs when talking about science. As I am preparing lectures, I frequently realize that my presentation relies on prior knowledge that I cannot assume everyone has. As people say.. if you really want to understand something, try teaching it to someone else.
Two more weeks to go in the class, and we will be getting into the topics where sizes and distances become more and more difficult to comprehend. Galaxies outside our own, ranging from the nearby Andromeda galaxy all the way to galaxies we see when the Universe was a fraction of its current age! But before I can talk about it, I have to write the lecture.