I read a comment on youtube that made me think.The Earth used to be smaller than what it is today for example back in the days of the dinosaurs animals were a lot larger because the gravity was stronger?But insects used to be a hell of a lot bigger because there was more oxygen then there was today?And the earth got bigger because of dust and other things can't remember much of what it said.But the moon when it was closer would of had a huge impact on gravity right?No expert but interested in science.