The widely accepted theory that suggests our Moon formed after a Mars-sized planet crashed into an early Earth may be WRONG. A new study challenges EVERYTHING astronomers though the knew about how our ‘natural’ satellite came into existence. Current theories have failed to explain satisfactorily, why the Moon is so similar to rocks on Earth.
Probably since mankind first saw the Moon in the sky, humanity has wondered what force helped put the moon where it is today and how it was formed. According to the leading theory, our moon was formed after a GIANT impact between a very early Earth and another planet the size of Mars dubbed Theia.
The debris produced by the collision formed a dense, hot cloud of debris around our world, which, by the force of gravity, ended up being shaped together to create our natural satellite.
However, researchers from the Weizmann Institute of Science in Israel say the moon didn’t form like that. Experts from Israel have just put forth a new theory that suggests our Moon may have formed from a SERIES of massive impacts, and not just ONE.
A study published in the journal Nature Geoscience, explains why Earth’s natural satellite is mostly made from Earth-like materials, and not a mixture of elements and those from another celestial body that participated in the collision.
The reason why the explanation that suggests a planet called Theia impacted Earth, does not satisfy the authors of the study is mostly because of the composition of the Moon, which has an isotopic signature very similar to that of Earth. This simply should not be so.
What is expected, in the case of a single giant collision, is that the resulting body was a mixture of the impactor and the Earth. It could happen that all the material that formed the Moon would come from our planet, or that the impactor would happen to have an identical composition, but these scenarios are very unlikely.
After performing numerous mathematical calculations and simulations, researchers suggests that our moon may have been formed not by one massive collision, but by multiple collision.