The Physicist has a lot of important roles to play.
The team is going to require:
An understanding of gravity on the development of life forms
An understanding of gravity’s impact on the human team members.
An understanding of the impacts of weather and winds on structures. How are things constructed /designed?
How do you achieve this?
I am sure there are lots of other things that I have not mentioned. As chief Physicist, it is your job to ensure that you can advise on all things related to Physics.
Of course, in any scientific field, you need to be clear about your assumptions and what you have based them on (if any).
Create mind maps, equations, drawings, descriptions, classification trees, in fact, anything that is going to show your knowledge of Physics.
If you choose to create something physical - take photos of them and ensure that they are submitted as part of the final presentation.