When you enrol in postgraduate studies you can apply for a variety scholarships, which provide additional money to help with your studies.
Specific to Physics and Astrophysics
J. L. William Postgraduate Top Up Scholarships offered by the School of Physics & Astronomy will bring your central Scholarship (eg APA/MGS) up to the value of $32,000 p.a. You can apply for this scholarship through the School once you have been accepted through MGE.
Specific to the Faculty of Science
See Scholarship opportunities for science graduate research students which has information related to scholarships in general as well as scholarships only available to students studying in the Faculty of Science.