STEP 1: We'll start with a list of image labels for the background.
- Click LOGIC, go to and drag List of Strings into the top section of your program.
- Name the list stage_list by changing the variable name from my_list to stage_list.
- Change the three values in the list to "moon", "mars", and "jupiter". Don't delete the commas!
- Click Submit and Next to move on.