What happens to the Earth?
Would we be able to survive if the moon was hit by a giant asteroid?
Life without a moon would be very unlikely. First depending on what happens, let’s say an asteroid the size of China slams into the moon. The moon would most likely blow up into thousands of fragments. Consequently those fragments would get pulled into our gravitational pull and with no moon to deflect them they would go directly at Earth. Most of these fragments would get through the atmosphere and take out cities, countries and millions if not billions of people. With no moon to create currents and waves the oceans natural cycle would stop resulting in a mass die out of fish ect. The stagnant water would heat up more and lead to an accelerated global warming. In the space the fragments left would create rings like Saturn, but these fragments would break off making Earth under constant bombardment. But that’s not all, the loss of the Moon directly affects the Earth’s orbit, rotation and wobble. Without the Moon to act as a stabilizer, the Earth begins to wobble more and more, sending our seasons into turmoil and changing our orbit around the Sun from slightly elliptical to massively elliptical. We now swing around the Sun in a wild, unstable, fluctuating orbit. With all these factors life on Earth would be impossible to very little chance.
Origin of the Moon
Democritus and Anaxagoras taught that there was a time when the Earth was without the Moon. Aristotle wrote that Arcadia in Greece, before being inhabited by the Hellenes, had a population of Pelasgians, and that these aborigines occupied the land already before there was a moon in the sky above the Earth; for this reason they were called Proselenes.
There are currently three theories of the origin of the moon:
1) The Moon originated at the same time as the Earth, being formed substantially from the same material, aggregating and solidifying.
2) The Moon was formed not in the vicinity of the Earth, but in a different part of the solar system, and was later captured by the Earth.
3) The Moon was originally a portion of the terrestrial crust and was torn out, leaving behind the bed of the Pacific.
Possible demises of the Moon
-Destroyed by humans (via a bomb)
-Dragged off by the gravity of some other space object