Who Wants to be a Planetologist?

Become a planetologist by answering the questions and raising your planetology-ness percentage. However, if you get a question wrong your planetology-ness percentage will drop. You have 20 tries to become a planetologist. 

 

To start the game press here: 

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Percentage of Planetology-ness: %
Numbers of  tries left:
Question:

Answer Choices: