How did the moon came to be?
In: Physics
Very early on in our solar system, the proto-Earth was hit by an extremely large object (roughly the size of Mars), typically called Theia. The impact shed a colossal amount of material into orbit around Earth, which then collected into what we now know as the Moon. This impact also knocked Earth onto it’s side, resulting in Earth being tilted off-axis by 23.5 degrees, hence why we have seasons. Further, most of Theia’s mass actually ended up merging with Earth’s core, and is believed to be why the Earth’s core is as heavy as it is.
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