Sean wants to be the first to walk on a moon, like his hero Neil Armstrong.

The kids try to dig into the Center of the Earth but find out that the center is much too hot.

Sunspot is determined to get to Jupiter to meet his fellow pet aliens, other members of the Red Spot Club.

Mindy is concerned that the possible addition of a younger sibling to her family might be a challenge.

It’s the anniversary of Carrot and Celery’s first date, he wants to recreate the first picnic on Bortron 7’s moons.

Sean, Sydney, Jet, and Carrot head out to view the Northern Lights.

The neighborhood is having a star gazing party when Mindy discovers what may be a new comet.

Sean realizes that the best way to learn about asteroids is to see them for himself.

Mindy and Carrot are entering a cooking competition and are making desserts representing the planets of the Solar System

Sean sets up a sno-cone stand to help raise money to send a spaceship to Mars.

Celery’s brother, Zucchini, and his pet, Moonbeam, decide to visit the Propulsions, but get lost along the way.

The Propulsions are forced to watch a slide show of the Petersen’s vacation to the Grand Canyon.

Celery takes Jet, Sydney, and Sean on a trip to explore Saturn’s rings to learn what they’re made of.

Jet suggests they just have his mom fly them out to Mars. Is Sean’s concern about Martian dust devils legitimate?

Mindy is shocked to learn that there is more than one moon in the solar system.

Celery and Carrot need to update their guidebook about Mars.

Beep is sad because her sister rover on Mars, Boop, is sick and can’t move.

Sean tells Jet about the Apollo 11 mission and the kids decide to do a real-life reenactment of landing on the Moon!

Jet’s parents offer to fly Jet out to space so they can see how the Moon changes shape depending on perspective.

The kids take a trip to the Moon and learn that falling asteroids probably created all the craters on the Moon’s surface

Sean explains to the others that Earth is a “Goldilocks” planet because it’s not too hot and not too cold.

The kids learn how all the planets both orbit around the Sun and rotate on their own axes at the same time.

Jet explains how his family found Earth by way of the Sun.

Jet attempts to play the “Solar System” game with Sean, Sydney, and Mindy.