Roof of building D, Center for Astrophysics: Students in Astronomy 218 (Radio Astronomy) relaxing after a four-hour experiment to measure the cosmic microwave background. (L-r) How-Huan ”Hope” Chen (TF), Kirit Karkare (VTF), Ryan Loomis, Andrew Vanderberg, Ashley Villar (MIT), George Miller, Mary Knapp (MIT), John Lewis, John Kovac, and Jim Moran (in sun’s shadow). The CMB seems to be holding constant at about 3K. October 14, 2013