在漫长的45亿年的历史中，月球经历了小行星和彗星的无数次撞击。每次撞击对于月球来说，都是一件蔚为壮观的大事，而在大约39亿年前的那段时期，月球所经历的一场深重的灾难则彻底改变了月球的地貌，其80%的表面，由于不断的大撞击形成了1700个直径达100公里的大陨石坑。这就 In the long 4.5 billion years of history, the Moon experienced numerous impacts from asteroids and comets. Each impact is a spectacular event for the Moon, and during the period of about 3.9 billion years ago, a profound catastrophe experienced by the Moon completely changed the landscape of the Moon, with 80% of it. On the surface, 1700 large craters with a diameter of 100 kilometers were formed due to the constant impact. This is