European Commission President Jean Claude Juncker is believed to have said he has "heard from the leaders of other planets" and "those who observe us from afar are worried."
It happened in a debate on Brexit, whilst some have said they believe he was supposed to say "many leaders of our planet", others believe it was a coded message.
We're not quite sure, but it did get us thinking about the best ever alien stories.
Scroll through our gallery above to learn more. We're not saying they're true, but they are interesting...