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Most astronomers think that the collision of a Mars-sized asteroid with the Earth 4.5 billion years ago resulted in the formation of the Moon. |
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Most astronomers agree that the Moon was formed when a Mars-sized asteroid collided with the Earth 4.5 billion years ago. |
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Most astronomers think that the Moon was formed as a result of the collision of a Mars-sized asteroid with the Earth 4.5 billion years ago. |
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Most astronomers agree that a Mars-sized asteroid collided with the Earth 4.5 billion years ago, which ultimately formed the Moon. |
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Most astronomers think that the Moon, which was formed 4.5 billion years ago, was the result of the collision of a Mars-sized asteroid with the Earth. |