There is not a complete consensus amongst contemporary scientists as to how the Moon came into existence. Historically , three hypotheses were widely seen as plausible contenders for such an explanation: they were the “Fission Hypothesis”, which held that the Moon was ejected by the ancient, swiftly-spinning Earth; the “Capture Hypothesis”, in which the Earth’s gravity captured another planet; and the “Co-accretion Hypothesis” in which both the Earth and the Moon came into being side by side formed together from the same primordial loose aggregation of space dust. | There is not a complete consensus amongst contemporary scientists as to how the Moon came into existence. Historically , three hypotheses were widely seen as plausible contenders for such an explanation: they were the “Fission Hypothesis”, which held that the Moon was ejected by the ancient, swiftly-spinning Earth; the “Capture Hypothesis”, in which the Earth’s gravity captured another planet; and the “Co-accretion Hypothesis” in which both the Earth and the Moon came into being side by side formed together from the same primordial loose aggregation of space dust. |