Ducky: "Who would have thought that the radium spheres, radiothermal generators which were cast away to the ocean from a submarine deployed on Earth by an interstellar probe once they were no longer hot enough 2 billion years ago, would preserve their inner structure even as they transformed into lead spheres?
What, you thought I was thrilled by these objects because they are shiny?! Who do you think I am?! I'm bluffing? Yeah, you get me there..."