That would have been a very, very long time ago. The ancient Greeks knew the earth was a sphere, and calculated it's diameter about 2500 years ago - and the distance to the moon, and the diameter of the moon as well. They did this by observing lunar eclipses, and reasoning that on...
@Guyzseriously
That would have been a very, very long time ago. The ancient Greeks knew the earth was a sphere, and calculated it's diameter about 2500 years ago - and the distance to the moon, and the diameter of the moon as well. They did this by observing lunar eclipses, and reasoning that on...