- #1
waterhouse
- 2
- 0
I recently heard someone claim that not too very long ago Newtonian theory based on the size of the moon predicted gravity on the moons surface would be 1/4 that of earth. The actual observation was that it is 1/6 that of earth. The conclusion supposedly is the moon is made of material less dense than that of earth.
can someone tell me if in fact it was a surprise back in 1969 , and if we now know whether the needed mass of the moon to make the observation agree with the theory is supporeted by the material , dust layer depth etc ?
can someone tell me if in fact it was a surprise back in 1969 , and if we now know whether the needed mass of the moon to make the observation agree with the theory is supporeted by the material , dust layer depth etc ?