Bubble guppies solar system

While collecting rocks, Goby meets two astronomers who are looking at the Moon, he then hopes he can get a Moon rock. The Guppies then go to the planetarium where Goby is in for a big surprise from Mr. Grouper. . Reaching school, Goby tells everyone what happened and they begin to discuss all the things you can find in outer space, including our star, the sun. They then begin to sing "Sun,.