I see the moon

As we were walking out of the store last night Sammy pointed to the sky and said "daddy moon" We looked up and sure enough there was the moon... and then she followed it up by "oh no stars" "daddy stars night night" Yup she was right the moon was out but the stars had not come out yet.... Where the heck does she learn all this stuff?? I was so proud of her... She is starting to talk in full sentences it makes it easier to under stand her and her vocabulary is just exploding.... She communicates some much now...