There has to be new words to explain new worlds.

There has to be new words
to explain new worlds.

You can’t find any direct explanation regarding 'aliens' and 'dinosaurs' within the bible. Those words were not yet uttered by human tongue at time when the bible was written. But it doesn’t mean they were not exist at all.

Just as heart is a fountain of unspoken words,
the universe is a womb of wonder weird worlds.

There are people who believe in the existence of angels, but do not believe in alien existence. There are people who believe that aliens and angels are the same creatures. But there are people who are much worse, those who have seen and met angels, and witnessed the presence of aliens, but does not admit even the slightest about the linkage between both. And the worst thing is, they even try to maintain the status quo.

You do not say 'It's classified' to a certain thing needs to be hidden, because people are going to find it in anyway possible. Say it in a way with your language that gives people a benefit of the doubt.