In order to coordinate an extra-terrestrial landing that is expected to occur in the Australian outback, the Australian Government enlists a controversial think-tank, who are now depending on the success of this event for their own livelihood, think 'Contact' meets 'The Games' TV show.

Agreed with FFF and DPG.

Also what is the inciting incident what event starts the story and sets the MC off on their journey?

Hope this helps.

So...who is the protagonist and what is his objective goal? Who opposes him? What are the stakes?

Hello, the logline should be structured from the main character point of view (pick a person in the gouvernement maybe). Which country is irrelevant at this point of developement. The dimension of conflict should be clear.