Submitted by Aubin_kun t3_11l055w in askscience
XXAIgeneratedacctxXX t1_jbgupu6 wrote
None, the continents were already well formed before the Moon was placed in orbit. Right around the time the current continents arrived at their present location (Due to the expanding earth effect) the moon entered our solar system and was strategically aligned into its current orbit. Luckily due to the cooling of the mantle the earth has stopped expanding in diameter, so no significant changes to the current continental structure should occur...at least not at the rate it was expanding over the last 500,000 years.
Amazing stuff.
ThankTheBaker t1_jbirolg wrote
There is pretty strong evidence that about 4.5 billion years ago the moon was formed as a result of early earths collision with another celestial body about the size of Mars namely Theia. The moon is most likely not a captured object but as a result of the debris thrown up due to this impact. The moons rocks contain many of the same elements and isotopic properties as earth rocks. If it were captured this would not be the case.
Viewing a single comment thread. View all comments