Science Scratching the Surface: The Yarrabubba Crater KUAF | By Caitlin Ahrens - The Pluto Manager Published April 12, 2020 at 1:54 PM CDT Facebook Twitter LinkedIn Email Listen • 2:30 On this installment of Scratching the Surface, Pluto Manager Caitlin Ahrens discusses the oldest impact crater on the planet - the Yarrabubba Crater.