Big theological problems with “aliens”.
Do they have souls?
Were they unfairly cursed with “all creation” due to Adam’s sin here on earth?
Did Jesus die once for all here on earth?
Do the aliens even know they need a Savior and that they have one?
Just as the english phrase “for ever” is often used in the bible as the translation of the hebrew word that described something that was, in fact, a finite time, the phrase “all creation” as translated to english could mean only the earth.
Depending on the context.
There are places in the new testament where a literalist will see the writer saying that all who say Jesus is Lord are saved and then the writer turns around and says not all that says Jesus is Lord will be saved. It’s often because the translation doesn’t capture the full meaning of the point.
I think it’s a risk we all take. If a mother says to her son, “if you don’t look both ways before crossing the street, you’ll get hit by a car.” It doesn’t mean that. It means the risk is much greater. But a lot of people take some similar statements in the bible and hang on every word literally when, in fact, the reader’s translation terribly contradicts the overall message of His Word. It is because they are missing the point being made, while literally “over” interpretting the statement.