NAM 2015 Retrospective. In the show this time, we cast our ears back to the National Astronomy Meeting (NAM) in July 2015. We talk to Dr. Brook Simmons, Becky Smethhurst and Tom Melvin about Galaxy Zoo [00:02:22.698 - 00:13:16.015], Dr. Carolin Villforth about quasars [00:14:57.590 - 00:18:29.526], Professor Pedro Ferreira about general relativity [00:20:17.943 - 00:22:45.439] and Dr. Matt Taylor about the Rosetta mission [00:24:19.101 - 00:35:58.795]. We also have interviews with Professor Jo Dunkley about the cosmic microwave background [00:36:37.046 - 00:39:41.633], Dr. Daniel Brown about archeoastronomy [00:40:59.291 - 00:53:29.898] and Lars Mejnertsen about Neptune's magnetosphere [00:54:50.916 - 00:58:03.049].