Allowing the word "related" to do a lot of heavy lifting, I'd say that it is the same for aliens.

No conjectures in math are called theorems and they are based off of made up assumptions called axioms. Whether the axiom is true from an observational standpoint is irrelevant to math.

For example euclidean geometry is observably not true. Einsteins General relativity shows that the observable geometry of our universe is not euclidean. Yet the field of euclidean geometry is still intensely studied and a valid mathematical field.

I should be getting paid for this.