I have always been curious about the theory of relativity.  I don't understand physics (yet) so it is hard for me to understand this.  I didn't know Albert, Hendrik, and Henri were accredited with the culmination of the theory. You most often only hear Einsteins name.  Space is something we don't really understand and haven't really explored.  We have done little but this should definitely be preserved because Einstein made an effort to understand.  He is a brilliant man who made a big impact on our history and way of understanding things.  Good job! Interesting read.