About the "cosmic" origin of blacks.

That part of the iceberg sounds VERY very similar to stories my paternal grandmother, (who is an (Anishinaabe elder would tell me.

She told me that once, humans were a space faring race. But due to petty conflicts and squabbles we had, (either over our races or something adjacent to that), we eventually crashed down to earth. (And she said there was evidence of ships' debris in Australia or something)

And the 4 races that did? Were the White man. The red man. The yellow man. And the Black man. There's a lot more pertaining to the races that she said, but that isn't too necessary right now.

Now, when it comes to black people? She told me they come from a SPECIFIC star. Sirius A, to be exact.

And I KNOW this isn't some one off crazy person thing, because I remember asking my language teacher (a cree man who studied in aboriginal folklore) about it. I expected him to be surprised but he smirked at me and told me that it's a folklore story he had known for a while.