Read each clue and identify which planet it describes.
Click the correct planet and click Submit to check your answer.
If you answer correctly, you collect one element or compound.
The more items you find, the better your chances of winning.
Click X to continue.
Clue 9
The rotation period of this planet is longer than its revolution period. It is covered in a cloud and is the hottest planet. Visit this planet to collect Carbon Dioxide (CO2).
Click the correct planet and click Submit to check your answer.