Like Waldy before me, I believe this is how the moon was made.
‘We thought the moon was a satellite captured by the Earth’s gravitation, but scientists have recently discovered that, soon after the Earth was formed, another planet-like body, Theia, smashed into it and the rock debris formed the moon.
‘Once we had a moon, that began to stabilise the Earth. Before this, we had mile-high tides and, after the collision, the moon was ten times nearer than it is now. As it pulled away, we slowed down from having six-hour days to 24-hour ones.’
DailyMail (Apocalypse how?)
The giant impact hypothesis (sometimes referred to as the big whack, or, less frequently, the big splash) is the now-dominant scientific hypothesis for the formation of the Moon, which is thought to have formed as a result of a collision between the young Earth and a Mars-sized body that is sometimes called Theia...
Giant Impact Hypothesis
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