On Dec. 20, 2016, University of Chicago scientists Jonathan Richardson and Stephan Meyer work on the final assembly of the newly reconfigured Holometer vacuum system, which is inside an rough enclosure made of plywood, on a platform made of a steel slab recycled from Fermilab’s boneyard. The steel cube at the left holds the end mirror of one of the Holometer interferometers. Photo: Craig Hogan, Fermilab