Find all the quizzes in the inner solar system and make 80% or greater (miss 0 to 2 questions). Don't worry if you miss a question, you can retake the quizzes, and the highest score is the one that counts. The quizzes are marked with gold spinning question marks and located in the following areas:
Mars: Outside and to the right.
Moon: Go out the back door from where you start, and go to the building in the back (library). The quiz is just up the stairs in this building.
Earth: From the start, go forward into the hall way, and the quiz is in the room on the left.
Venus: The quiz is to the right of where you start.
Mercury: The quiz is on the roof of the large skyscraper.
Sun: The quiz is straight ahead, and down from where you start, on the surface of the alien ship, near the white center solar beam.