EDGES (IMAGE) Arizona State University Caption EDGES is a radio spectrometer operating at the Murchison Radio-astronomy Observatory custom-built by ASU assistant professor Judd Bowman and his colleague Alan Rogers of Massachusetts Institute of Technology. EDGES recent results mark the first time that radio observations have directly probed the properties of primordial gas during the Epoch of Reionization. Credit Judd Bowman Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.