#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life

3535.526 - 3554.216 Adam Frank

And so if that, if we're living in one of those bubbles right now, then maybe we were visited, but we were visited a hundred million years ago. And there was a paper that Gavin Schmidt and I did that showed that if there was a civilization, whether it was like dinosaurs or aliens that was here a hundred million years ago, there's no way to tell. There's just there's no record left over.