2. Do Fish drink Water?

A day at the beach gets the kids wondering: Do fish drink water?

3. Twinkle twinkle Little Star

It's an interstellar adventure as Luna and friends find out why stars twinkle.

4. Martians, Martians, Martians

The gang become robots to explore the surface of the planet Mars.

5. The Waggle Dance

After the ballet, Luna notices bees communicating through dance.

6. Banana Seeds

Luna wants to plant a banana tree, but where are a banana's seeds?

7. On the Rings of Saturn

After discovering Saturn's rings, Luna and the gang wonder if they can walk on them.

8. The Tale of Kale

Luna and friends investigate the mystery of some missing kale.

9. That Just Rained Smell

To learn about that fresh, just-rained smell, Luna, Jupiter and Clyde become radishes.

10. How Water Became Rain

Luna becomes a water drop to learn how water becomes rain.

11. Luna's Lunar Quest

A howling dog and a full moon send Luna and friends to the lunar surface.

12. Mirror, Mirror on the Wall

Foggy mirrors in Luna's house get her thinking about condensation.

13. In Clyde's Eyes

Clyde's grooming day gets the gang wondering what the world looks like through an animal's eyes.

14. Strong as an Ant

Luna and friends discover that ant colonies rely on strength and teamwork.

15. Shooting Stars

The gang sees an amazing backyard sight: a shooting star!

16. Ice Giants

When Clyde's toy boat sinks, the friends get curious about icebergs.

17. As the Bread Rises

Munching on delicious rolls at the bakery, Luna wonders what turns dough into such a fluffy treat.

18. Luna Saurus Rex

The gang checks out the zoo's new dinosaur exhibit.

19. Butterfly Feet

Luna and friends notice interesting butterfly habits.

20. Wings of a Bird

Luna investigates how birds fly after discovering a nest in her garden.

21. It All Falls Down

A dropped ice cream cone and Igor's astronaut sticker album makes the gang wonder about gravity.

22. Flying Lights

The friends become intrigued by lightning bugs.

23. A Snail Tale

While playing with a pet snail, Luna wonders what it's like inside her shell.

24. Nighty Night, Sun

A sunset inspires the gang to find out where the sun goes at night.

25. Reaching the Rainbow

A rainbow inspires the kids to learn more about the "why" behind it.

26. The Sinking Grape

A lost orange leads Luna and friends to the concept of flotation.

27. Blowing Bubbles

Luna and Jupiter wonder why bubbles are always round.

28. Drawings in the Sky

The gang must become stars in space to learn how to find constellations.

29. A Cat's Whiskers

Finding a lost kitten, Luna and Jupiter question why cats have whiskers.

30. Up, up and Away

The gang turn into hot air balloons to learn how they stay up in the sky.

31. Salt of the Sea

Watching fish at the pet shop, the friends want to know why salt water is salty.

32. Great Craters!

Wondering how the moon's "holes" formed, the kids discover craters.

33. Do Re Me Fa-lute

Jupiter and his friends ask how his new pan flute makes noise.

34. Gecko Glue?

A gecko lizard in the kitchen sparks the question of how it sticks to surfaces.

35. Snow Day

A snow day encourages the gang to question what snow is.

36. Popcorn A-Poppin'

Luna and Jupiter try to determine how a kernel of corn pops into their favorite treat.

37. A Tale of Tails

The kids become critters and ask the question: Why do animals have tails?

38. Flowers & Fruit

The gang is surprised to learn that oranges start out as flowers.

39. Spinning Webs

After finding webs in the backyard, the friends explore how spiders make them.

40. One Thunder, Two Thunder, Three!

Luna teaches her dad's trick for determining the distance of a storm.

41. A Dog's Paws

The gang witnesses some strange behavior from Dr. Jane's dog, Snowball.

42. The Superstar

Luna and friends wonder if the sun is a planet, but they think it's not.

43. Camouflage

When they can't find Clyde, the friends find themselves thinking about camouflage.

44. How old Are You?

Clyde's birthday inspires the gang to figure out how old a tree is.

45. The Wonderful Forest of Chocolate

After learning that chocolate comes from a tree, Luna and friends have to know more.

46. Silkworms

A gift from China inspires the kids to learn about silk.

47. Slip-sliding Along

The friends turn into toy cars to experience moving across different surfaces.

48. Shadows

The gang learns about shadows and makes some fun experiments.

49. Echo-echo-echo

Luna and friends discover what an echo is while walking through a tunnel.

50. Roly Poly Fun

The gang learns about the roly poly bug and why it curls up into a ball.

51. Pretty Bird

A neighbor's parrot soon has the gang pretending to be pirates at sea.

52. One Thing Becomes Another

A plastic yogurt cup inspires Luna and friends to learn more about recycling.