Board Thread:Naruto Discussions/@comment-24120130-20140607191120/@comment-24891350-20140612180123

Georgio722 wrote: how Madara got his Shinju Eye is to approach the moon, so we can assume that Kaguya got her eye like that as well, due to the Shinju's chakra inside both of them reacting to the Shinju's chakra on the moon. There was no moon during Kaguya's time.