(3200) Phaethon & The Geminids
Most meteor showers are the leftover dust trails of comets, but the Geminds were made by (3200) Phaethon, a blue-colored asteroid. Is Phaethon really an asteroid, or is it a dead comet? What does it tell us about the Geminids?
The Centaurs are the progenitors of the Jupiter Family Comets, and 176P/Echeclus is among the strangest of them. It's prone to massive outbursts, which could help to understand how comets are built if we understood the processes that caused then.