George is helping Luna, Jupiter, and Clyde pick oranges in the orchard. Jupiter wants to try a green orange that hasn’t quite ripened yet and is surprised by how sour it is. It gets them all wondering, why is fruit sweet?
Up Next in Earth To Luna
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  Super StrongWhen the trio see Grandpa and Galileo using pulleys and levers to do some really heavy work, it gets them wondering how they work. They transform into super-heroes and discover the mighty power of these tools in the Lever and Pulley League. 
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  Set in StoneWhile playing with some stamps in Grandpa’s shop, Jupiter stumbles upon a fish fossil. But what exactly is a fossil? Searching for answers, the trio tries to make their very own fossils in mud. 
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  Staying DryOn a picnic down by the lake, Luna, Jupiter and Clyde see some ducks swimming. When they take a closer look they realize the ducks aren’t wet. How can a duck swim and not get wet? It’s time for another amazing investigation to discover the duck’s secret. 
 
 
           
          