Duffy is a Research Fellow and astrophysicist at Swinburne University, creating model universes on the nation’s most powerful supercomputers to understand how galaxies like our own Milky Way form and explore the nature of dark matter, a new type of mass holding the galaxies together. He is a team member of the leading galaxy mapping projects with. the Australian Square Kilometre Array Pathfinder, tracing out the distribution of dark matter in the universe using the visible galaxies as tracers.. He is also a member of SABRE – the world’s first dark matter detector experiment in the Southern Hemisphere searching for dark matter from the depths of a gold mine in Stawell, Victoria.. He is a regular on ABC Breakfast News and Ten’s The Project with hundreds of TV and radio appearances, as well as a writer for one of Australia’s most popular science magazines Cosmos and his own column in the conversation.