The giant impact theory proposes that an asteroid around the size of Mars impacted the Earth during its formation, explaining the origins of the moon. This impact blew rocky surface material from the Earth outward, part of which accreted to form the Moon.
It suggests that the Moon formed as a result of a collision between the Earth and another small planet the size of Mars. The debris from this hit accumulated in an orbit around Earth, eventually becoming the Moon.
So, giant impact theory is currently accepted as explaining the Moon's creation
