Regardless, has it ever been considered the mass of the earth is growing slowly as vegetation grows and dies repeatedly. Surely this change will eventually alter the orbit of moon and cause catastrophic damage if no intervention is made. (Nuking the moon to destruction, a remake spin off of armageddon with Bruce Willis comes to mind).
Its something I thought about but never heard any other opinions, calculating rate of diameter growth can be found using archaeological data depths and how many years would it take if ever for the earth to be large enough to shift the moon.
If the earth was to gain 1mm of earth each year, in just 1.6 million years the earth will have gained a mile of earth.
55 million years ago was the Jurassic period and these fossils are found 750m deep now.
750,000mm / 55,000,000 = 0.013mm per year. Not considering the additional growth it will take 100 million years to gain a mile of earth. This would be my guess of how much extra mass it would take to shift the moons orbit, roughly 2000 cubic miles of gained earth.
The moon has a volume of roughly 5 billion cubic miles of which 2000 cubic miles is only a 10 millionth of the moons volume. But being such a delicate orbit I can't imagine much more of a change would not effect its trajectory.
But in short 100 million years on this estimate is a lot less time than the 5 billion years highted that the sun has left before it goes super nova.
Anyone who know anything about orbital physics that wants to modify my estimates here?
Edited by fuzi2020, 19 July 2020 - 09:04 AM.