I do not think it was aliens. Time-travelers, okay, maybe so.

I do think the Sun-Moon angle thing may be real. I was talking with a man of the Blood Tribe. The language is similiar but different in syntax and in pronounciation to the Siksika. Suddenly, I remembered grandmother talked to me before I could speak. She moved in with us shortly after I was born. She told me many things before I could speak words, including all of the Blackfeet names.
I think she told me about the Sun-Moon.
It wasn't my other grandmother. I didn't live with her until I was 13 years old.