Just The Facts : A mind-blowing fact about sand and the stars

Speaking of Neil DeGrasse Tyson, how great was Cosmos?  I feel like I learned more watching that show than I did during 3 years of high school.  He's got a way of simplifying the most complex things so that the average person can understand them.  If you haven't seen this series, check it out.  I think it might even be on Netflix.  You'll have your mind blown by so many facts, just like this one..