Would it be ridiculous to ask E.T.s if they believed in God?

This was the main plot of some sci-fi movies like Contact: mankind finds evidence of an advanced E.T. civilization, so they manage to send an astronaut to meet them and ask them whether they have found evidence that there's a Creator.

I personally think there are 1000000000000000000000 far more interesting questions I've asked them before the one about God.