The AUD/USD news can be seriously affected by the decisions taken by this organizations and people: Reserve Bank of Australia (RBA) that issues statements and decides on the interest rates of the country.
However, the most important defense is the dissertation defense which comes at the end of a long and arduous process and which may have unfolded over a number of years. The dissertation defense is a significant milestone signaling closure on your graduate student career.
The prospectus of a dissertation is something you write for your own department headed by your own professors. This means that you are not trying to win something or arguing over the importance of your paper. You do not have to ask the professors if this paper is acceptable for further research or not.