‘Are there two different forces working on the moon?’ ‘Exactly. Once upon a time when the solar system began, the moon was hurled outward – outward from the earth, that is – with tremendous force. This force will remain in effect forever because it moves in a vacuum without resistance …’ ‘But it is also attracted to the earth because of earth’s gravitational force, isn’t it?’ ‘Exactly. Both forces are constant, and both work simultaneously. Therefore the moon will continue to orbit the earth.’
