Now this takes ancient astronauts to a whole new level.

He might as well have believed that Jeff had been brought back by ancient astronauts from another star system.

"Turns out they really were landing pads for ancient astronauts."

Despite all the talk of unidentified flying objects and ancient astronauts, there is no serious evidence that we have been or are being visited.

It is as if the academic community takes the view that theories on ancient astronauts are beneath their dignity.

You can moon around with your ancient astronaut all you want when we get a work camp set up.

He is a major proponent of the idea of "ancient astronauts".

He almost laughed; he was no believer in ancient astronauts or science fiction.

"So much for your fantasies of ancient astronauts."

The game was heavily inspired by the many popular theories about aliens, ancient astronauts and mysterious civilizations.