Thanks for the explanation Diddi, well done. If it is true that the moon is escaping earth's orbit at roughly 1 inch per year, and I have no reason to doubt this position, and it is also true that the moon's gravitational force is what stabilized the earth on it's 24 degree tilt and controls the speed of earth's rotation so that a day is 24 hours, then at what point will the moon be far enough from earth so that earth's tilt will become unpredictable and the length of each day will increase? Which is more likely to occur first, the complete escape of the moon from earth's orbit or the exhaustion of the sun's energy source? I am only asking so I can plan ahead!