In this episode, Luna learns all about why bubbles are always round, constellations, cats and their whiskers, what makes hot air balloons go up, and why the ocean is salty.

In this episode, Luna learns all about the moon and its craters, how wind instruments make sound, geckos, snow and how it's made, and what makes popcorn pop!

In this episode, Luna learns all about how different animals use their tails, how flowers turn into fruit, spiders and their webs, thunderstorms, and dogs and their scent messages.

In this episode, Luna learns all about the sun being a star, nature's best defense, trees and their age, where chocolate comes from, and how silkworms make silk.

In episode five of season two, Luna learns all about friction, shadows and how they are formed, how sound travels, roly-polies, parrots, and recycling!

Jupiter thinks the moon looks a lot like Momma’s Swiss cheese, what with its holes and everything. Luna is quite positive the moon is not made out of cheese, but where the moon’s holes came from she’s not quite sure.

Jupiter has just gotten a brand new pan flute and is ready to join Luna’s band. AS he starts trying to make music, they get to wondering, how do flutes make sound?

How do geckos stick to things?

Snowy days are the best! So many fun things to do and play. But, what exactly is snow and what makes it snow?

Luna and Jupiter just love popcorn... but they’d never thought about what actually makes popcorn pop. How does corn turn into popcorn?

Clyde just loves playing with the cat next door, but when the kitty suddenly startles, she surprises Clyde with a mean meow and a puffed up tail. Luna gets to wondering, why are there so many different types of tails and why do animals have them?

After finding an orange blossom on the ground, the trio is amazed to learn that oranges actually come from orange blossom flowers! But how can a flower become a fruit?

Luna, Jupiter, and Clyde are playing soccer with Tom, Alice, and Igor when they discover a spider web in the backyard! But they wonder, how do spiders build their webs? Where do they get the string to build to build it?

Luna discovers that Jupiter and Clyde are afraid of thunder. She teaches them Daddy’s special trick for counting thunders to measure how far away the storm is getting, but it gets her wondering... how does Daddy’s trick work?

While playing hopscotch with Alice out front, the gang notices Dr Jane’s dog, Snowball, doing something really odd... pawing the ground like he’s wiping his feet and then rubbing up against a bush like he’s got an itch. But what could he be doing?

It’s a particularly hot sunny day, the sun is shining bright in the sky, which gets Jupiter wondering... What do you call people who are born on the Planet Sun? Planet Sun? Luna’s pretty sure the sun isn’t a planet, but then what is it?

Luna and Jupiter are looking everywhere for Clyde the little ferret, but he’s nowhere to be found. Turns out he was camouflaged! But why do some animals camouflage themselves? Time for another fun-filled make-believe in search of answers!

It’s Clyde’s birthday which gets everyone wondering about the age of other things too, like how old are trees and how do you find out how old they are.

The trio is thoroughly wiped out after running around the backyard and Luna treats them each to a little piece of chocolate. They are absolutely amazed to discover that chocolate actually comes from a fruit on a tree! But how can you grow a chocolate tree?

When Grandma and Grandpa send the gang some beautiful silk robes from their trip to China, Luna, Jupiter and Clyde are surprised that little silkworms made the silk robes. But how can something so small make such beautiful robes?

While playing with little toy cars in Jupiter’s room, the trio notices something very curious – their toy cars move very differently across different surfaces. But why? What’s Happening Here?

When Jupiter spots his shadow late one night, he’s frightened by the shape and size, thinking surely a monster is after him! He runs to the safety of Luna’s room where she and Clyde help him see how fun shadows really are.

When the trio walks through a tunnel at the park, they discover something really neat, inside the tunnel their voices echo! But what is an echo and why does it only work in some places?

Helping Daddy rake the leaves and clean up his garden, the trio spots a roly-poly! When they go to pick it up and get a better look, the funniest thing happens... it rolls up into a little ball. Why do roly-polies do that?