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How did the Moon form? Earth’s Moon was born out of destruction. Several theories about our Moon’s formation vie for dominance, but almost all share that point in common: near the time of the solar system’s formation, about 4.5 billion years ago, something ― perhaps a single object the size of Mars, perhaps a series […]
The Moon was most likely formed after a Mars-sized protoplanet hit Earth around 4.5 billion years ago. The main evidence is derived from the chemical analysis of lunar rock...
The moon formed a hundred million years after the creation of the solar system. This has left scientists wondering what was the cause of our planet's satellite to birth if it...
A new simulation puts forth a different theory – the Moon may have formed immediately, in a matter of hours, when material from the Earth and Theia was launched directly into orbit after the impact.
The formation of the Moon refers to the process by which Earth's natural satellite, the Moon, came into existence. The prevailing scientific explanation for the Moon's formation is the Giant Impact Hypothesis.
Several different formation theories for the moon have been proposed by scientists, The story that is best supported by all the available data, however, is that the moon formed during a giant impact between the proto-Earth, and another protoplanet roughly the size of Mars, sometimes called “Theia.”
The accretion hypothesis proposes that the Moon was created along with Earth at its formation. The fission theory suggests Earth had been spinning so fast that some material broke away and began to orbit the planet. The giant-impact theory is most widely accepted today.
The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly.
The origin of the Moon is usually explained by a Mars-sized body striking the Earth, creating a debris ring that eventually collected into a single natural satellite, the Moon, but there are a number of variations on this giant-impact hypothesis, as well as alternative explanations, and research continues into how the Moon came to be formed.
Where did our Moon come from? Well, actually, there have been several theories over many decades. Earlier versions of lunar formation theories included capture, where the Moon would have been a strayed planetoid.