Now for some lighter fare.
Here’s a delightful article in the National Geographic that explores the scientific plausibility of the various "Star Wars" worlds.
A similiar piece appeared in, of all places, Forbes that discusses the science of Star Wars technologies. It appears that light sabers are, alas, particularly unrealistic.
While we’re at it, if you want a stimulating (if occasionally profane) rant about George Lucas’ waning artistic powers, here it is. The fighting Yoda, he writes, is a "methed-out cricket with a glow stick". Ouch…