Dr Edwards is the senior research scientist, Australia Telescope National Facility, CSIRO Space and Astronomy, based at CSIRO's Marsfield site in Sydney.

Dr Edwards has a PhD in physics from University of Adelaide, 1988. He has worked at Institute of Space and Astronautical Science of JAXA (Japan Aerospace Exploration Agency) for 12 years, from 1994 to 2006.

Dr Edwards is the chair, Murchison Widefield Array (MWA) and chair, Australian SKA Science Advisory Committee of ASCC.

He was co-chair of the RadioAstron International Science Council from 2014 to 2019, and has co-authored over 230 scientific papers.