Creationism is not, and never will be, science. It rejects the scientific method in favor of a particular interpretation of scripture.
Judges rule on what is religious in nature all the time, how else would they ever determine if a law is “respecting the establishment of religion” if they were somehow unable to discern what “religion” even was?
I am afraid my commonsense observation just can't get through the heads of people bound and determined to use the federal judiciary as a sort of Sanhedron. It's not designed that way and eventually that ambition is going to result in the total disestablishment and reconstruction of the judiciary ~ and possibly in ways the religious fanatics who want the judges to rule on their personal beliefs don't count on.