ジャイアントインパクト

noun

giant impact hypothesis

Scientific term for the theory that the Moon formed from debris after a Mars-sized body collided with the early Earth.

• ジャイアントインパクト説せつは、月つきの起き源げんを説せつ明めいする有ゆう力りょくな仮か説せつだ。

  The giant impact hypothesis is a leading theory explaining the origin of the Moon.