In this Backstory piece, Larry Potash looks at the search for answers to that age-old question: Are we alone? Meet some of the people looking for answers, learn about the technology letting us see more of the stars, and the problems that come along with progress. Backstory airs Saturday nights at 6 on WGN-TV. Check out the Backstory podcast at WGNtv.com/Backstory via Stitcher, iTunes, Google Play, or wherever you get your podcasts.