From 365 Days of Astronomy, Jan. 12, 2019: The Dark Energy Survey is the subject of this 30-minute podcast. DES started in 2013 to map dark energy over 5000 square degrees of sky. It used a massive 500-megapixel camera attached to the Blanco Telescope at Cerro Tololo Inter-American Observatory in Chile. The survey concluded on Jan. 9, 2019, with its last night of observing. At the American Astronomical Society meeting in Seattle, they conferenced with observers on the last night. Listen to the conversation at the end of this journey.