Quote: "Which is why it is all the more remarkable to reflect that until 1978 
no one had ever noticed that Pluto has  a moon." 

Comment: I kind of herd about Pluto not being a planet some odd years ago. I never really thought about it. Its cool the technology we have and how its evolving. We are going to be finding new things as the years progress. Its also mind blowing to me that we know almost everything going on in space and haven't actually been there.     

Question:  What planet is Pluto a moon to? I may have missed it in the reading.