The Australian Centre for Astrobiology has, after a period of transition, moved its headquarters from Macquarie University to the University of New South Wales (UNSW), also in Sydney. Its new web address is http://aca.unsw.edu.au. Its Director remains Prof Prof. Malcolm Walter (malcolm.walter@unsw.edu.au). The new Deputy Director is Prof. Brett Neilan (b.neilan@unsw.edu.au) whose research interests include the molecular biology and functional microbiology of stromatolite systems, and the toxins of cyanobacteria.