************* M*W: For lack of a better place to post this, I have some hypothetical questions on Earth's gravity: What if there was a time on Earth where gravity was not as strong as it is now? Say like during the time the pyramids were being built? Those megaton chunks of rock would have been lighter, and therefore would have been easier to levitate the solid rocks into place. What if less gravitational pull allowed there to be flying machines hovering above the ground or soaring into outer space? This is definitely not my area of expertise, but it's a thought that has preoccupied me. Could there have been a time on Earth when there was less gravitational pull? What would humans have looked like due to changes in gravity? Would we need more hair or less hair in that kind of environment? Could the change in the Earth's axis have anything to do with a change in gravity? Was the movement of the Earth's axis a very slow process or was it sudden? Thanks for your answers and explanations.