New research suggests Moon formed just 5 hours after Theia impact
According to a study featured in the Astrophysical Journal Letters, the Moon likely took shape only five hours following the collision between Earth and an ancient planet called Theia roughly 4.5 billion years ago. By running computer simulations of the event, researchers discovered that the intense heat from both Earth and Theia caused debris to rapidly coalesce, resulting in the formation of the Moon in that short timeframe.