There is so much to like in this eleven minute video: physics, biology, chemistry, geology, and some wild and fantastic scientific speculation!  Add to that a curiously captivating and eccentric narrator named vsauce, and you have the ingredients for a great warm-up video to a discussion of the solar system and the importance of the sun to Earths  biosphere.

Vsauce (Michael Stevens) has become somewhat of a YouTube celebrity and you might find that several of your students have already seen this video and some of his others.  Don't let that dissuade you though.  The science seems spot-on, and it has even garnered some attention from poular media news outlets as well:

http://www.businessinsider.com/what-would-happen-if-the-sun-disappeared-...