The most widely accepted is the asteroid impact theory.

最广泛接受的是小行星撞击理论。

The giant impact theory could explain all of these, but to convince people that something collided with the Earth 4 and a half billion years ago and created a magmoon… scientists needed a little more evidence.

巨大的撞击理论可以解释所有这些，但要让人们相信 45 亿年前有什么东西与地球相撞并创造了一个岩月… … 科学家需要更多的证据。

Sure enough, different parts of the present moon's crust, recovered by various missions to the lunar surface, differ in age by up to 200m years, a fact that has long puzzled selenologists but which the impact theory neatly explains.

这也意味着这个月球的岩石要年久的多。果真如此，现在月球外壳的不同部分，各次去月球表面的探测任务发现，这些岩石年代的不同达到2亿年之久。一个长期困扰月球学家的客观事实被碰撞理论巧妙地解释了。