The moon’s largest and oldest impact crater likely doesn’t have minerals from below the lunar crust on its surface, complicating a theory that an ancient massive impact event pierced the Moon’s crust during the crater’s formation, a new study finds.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/1-newstudycomp.jpg)
Source:
https://phys.org/news/2019-09-complicates-theory-ancient-impact-pierced.html