The detection of a large interstellar objects in 2017 named 'Oumuamua was a remarkable discovery. Figuring out where the wayward traveler came from, though, is another challenge entirely. Picture trying to create a timeline of everywhere that a random speck of dust floating in your home has been over the past, say, year, and you start to get an idea of how daunting the task is. Nevertheless, that hasn't stopped intrepid astronomers from attempting something like that. In a case study published i