According to the Kantian school of hypotheses the Earth and

Moon owe their unique character to the accident that two
centers of condensation--two nuclei--not very unequal in mass,
were formed close to each other and were endowed with or
acquired motions such that they revolved around each other
According to the Kantian school of hypotheses the Earth and
Moon owe their unique character to the accident that two
centers of condensation--two nuclei--not very unequal in mass,
were formed close to each other and were endowed with or
acquired motions such that they revolved around each other.
They drew in the surrounding materials; one of the two bodies
got somewhat the advantage of the other in gravitational
attraction; it succeeded in building itself up more than the
other nucleus did; and the Earth and the Moon were the result.