What is a Gassy Giant?

They’re big, full of gas, and here in our solar system!  Can you guess what they are? They’re gas giants, of course!  Discover the wonders of the four fascinating planets that are called ‘gas giants’ through an entertaining conversation between a girl and her little brother.  Do you know where it rains diamonds?  Or which planet is light enough to float in water?  Find out on this GASSY tour!