Science Scratching the Surface: The Goblin KUAF | By Caitlin Ahrens Published July 2, 2019 at 12:14 PM CDT Facebook Twitter LinkedIn Email Listen • 2:28 1 of 2 2 of 2 Once again Scratching the Surface is talking exoplanets. On this episode, Caitlin Ahrens talks about the Goblin and how it is helping locate the mysterious Planet X. Caitlin Ahrens - The Pluto Manager