If Eloy’s presentation about the Mount Wilson Observatory fascinated you as much as me, you’ll want to head over to the Mount Wilson web page to see what you can find there. There’s a large selection of videos and photographs about the important science that has been done at the site. A 13-minute video narrated by Hugh Downs provides an excellent introduction and confirms that Einstein himself was a visitor to the observatory. I was also impressed to learn that Mt. Wilson was the launching site for Albert Michelson’s experiment to measure the speed of light accurately.