One theory is that the earth and moon were originally one planet, but that something (perhaps a collision from another large body) caused it to split into two unequal parts. Neither part, obviously, was originally spherical, but centripetal forces and gravity, over thousands, perhaps millions, of years, shaped them into spheres. A variant on this theory has one or both of the bodies being completely obliterated by the impact, then eventually pulled back together, by gravity, into two separate bodies. == See the linked question below [Is the moon artificial] for some other possibilities for the origin of the moon.
Presently, the ejected ring theory best describes the origin of moon.
The most widely accepted theory for the Moon's origin is the Giant Impact Hypothesis. This theory suggests that a Mars-sized object collided with a young Earth, ejecting debris that eventually coalesced to form the Moon. This theory is supported by similarities in isotopic compositions between Earth and the Moon.
The moon.
The moon takes about the same amount of time to rotate on its axis as it does to orbit the Earth, which is why we always see the same side of the moon facing us. This synchronous rotation is caused by tidal forces between the Earth and the moon. Earth's rotation period is faster than the moon's due to its smaller size and composition.
The most widely accepted theory for the origin of the Moon is the giant impact hypothesis, which suggests that the Moon was formed from debris ejected during a collision between Earth and a Mars-sized body early in the Solar System's history. This impact led to the formation of the Moon from the remnants of the collision between Earth and the impacting body.
Presently, the ejected ring theory best describes the origin of moon.
rocks
the giant impact hypothesis is currently the accepted theory. It basically says that a large asteroid collided with the earth, knocking debris from the earth into space. this debris then formed together over time to form the moon.
The dominant theory of the origin of the moon is the Giant Impact Hypothesis. This theory posits that a Mars-sized body collided with Earth during the early formation of the solar system, ejecting debris that eventually coalesced to form the moon.
The moon resulted when a large body struck Earth.
The most widely accepted theory for the Moon's origin is the Giant Impact Hypothesis. This theory suggests that a Mars-sized object collided with a young Earth, ejecting debris that eventually coalesced to form the Moon. This theory is supported by similarities in isotopic compositions between Earth and the Moon.
rocks
The leading scientific theory on the origin of the moon suggests that it formed from debris left over after a giant impact between Earth and a Mars-sized protoplanet called Theia around 4.5 billion years ago. This collision resulted in the debris coalescing to form the moon in orbit around Earth.
a planet broke apart and the moon was captured by earth's gravity
There are many theories to the creation of the moon. One theory is that it is a part of the Earth. Part of the molten earth that pulled away, but got caught in the gravitational pull of Earth.
a theory or story of the origin and development of the universe, the solar system, or the earth-moon system.
I think the unanimus answer is that when the earth collided with another planet(putting it on a tilt) a chunk broke off and got caught in the earths magnetic pull. There are no other theories i know of.