This is an article from Curious Kids, a new series aimed at children. The Conversation is asking kids to send in questions they'd like an expert to answer. All questions are welcome – serious, weird ...

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

Since 1982, over 1 million participants have graduated from this program. What is this program? Space Camp! It is a camp for kids from all over the world, at the Space and Rocket Center in Huntsville, ...