Launch Pad, Day One, Mike Brotherton Lectures: SCALES OF THE UNIVERSE

When we were hearing this lecture, we got to see slides illustrating it. I don't have the slides for you, but author David J. Williams found this website: http://www.atlasoftheuniverse.com/ which gives you similar images so you can follow along. (Click on the images to see larger versions of them and more information.)

Just a note–any lecture wanders a bit, so I just plunked the tangents down when they happened, in parentheses. In future, I might experiment with adding them as footnotes, or...