LONG TEXT DISCLAMER!! (Archon quest 6.3 and possibly the game spoiler) (I'll mark the parts that isnt exactly confirmed in { } ) In the description of the outfit we got during the archon quest, we learn that the ship had an AI that shaped other worlds so that the twins can fit in, the ship also contained:
Twins hibernating
DNA of the twins
Their clothes
Travel log
{I'm thinking that when the spaceship flew close to teyvat 1000 or so years ago, the AI of the ship came to teyvat about when nibelung left the 3 moon sisters in teyvat and left, once the au came, the moon sisters thought of him as a guest until they realized that he had world dominating intentions} sound similar? Yes I'm saying that {the ai of the ship we came in was heavenly principles.
He destroyed nibelung and 2 of the moons. After that he made humans with the DNA of the travelers.} even on albedos story quest, albedo tells us that we're similar if not exactly the same as the people of teyvat. {Kinda confirming that the travelers and the people of teyvat have the same DNA. I'm guessing that the reason we got the ability to wield elements without a vision and use teleport waypoints is because the AI made us be able to. I'm not sure when the abyss sibling exited the ship, but its probably the moment we crashed into nod krai. Then he came back looking for us (the illusion that we saw with the moon marrow) I'm not sure how we ended up in mondstand, but nod krai and mondstand aren't that far away.} Anyway another evidence to support this theory is in the bedtime story archon quest, abyssal sibling says that he found a place where a flower lumine liked was in full bloom, and that flower didn't even come from teyvat {so probably the ai was the one that made that place, he made it like an end point of the twins journey} If you actually read this far, thank you, and I apologize for my English, it's not my native language

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