Most teachers find most students to be delightful. Even more so in physics than in most other subject areas, I suspect.
But there are exceptions.
So, teachers, take a look at this informative video clip. Be amazed by the relative sizes of the rare islands of matter that dot the universe. And see if you don't have occasional need for the important message at the end--the "moral of the story," if you will.
Go ahead; bookmark it now for use later.
And by all means, scope out Phil Plait's BadAstronomy.com, from whence I lifted this gem.