'Ready Jet Go!' Blasts Off Into Space for New Episodes

The characters of "Ready Jet Go!" explore space in five new episodes airing on PBS KIDS this week, Aug. 15-19.
The characters of "Ready Jet Go!" explore space in five new episodes airing on PBS KIDS this week, Aug. 15-19. (Image credit: PBS KIDS)

The adventurous space explorer Jet Propulsion and his Earthling friends head into outer space to learn about Jupiter and Pluto in new episodes of the animated series "Ready Jet Go!" airing this week (Aug. 15-19). 

The educational show premiered in February 2016 on PBS, and it follows Jet Propulsion and his family, who are natives of the fictional planet Bortron 7. Their car transforms into a rocket ship to take Jet, his pet named Sunspot, and his friends Sean and Sydney into space to learn about the solar system. 

In one of the upcoming episodes, "So Many Moons," the kids travel to Jupiter to count that planet's many moons

Jupiter, the largest planet in the solar system, has 67 moons, and the kids want to know how these satellites manage to orbit in harmony, as well as how they differ from one another. While many of the moons look similar, Jet highlights three that have stark differences: Ganymede, Europa and lo. [Rare Photos: Jupiter's Triple-Moon Conjunction in Pictures]

Ganymede is not only Jupiter's largest moon, but also the largest satellite in the solar system. While most of Jupiter's moons are small, the planet has four incredibly large moons known as the Galilean satellites: Io, Europa, Ganymede and Callisto. Contrasting with the icy surface of Europa, lo is covered in volcanoes and lava lakes. 

The kids study the moons of Jupiter because Mindy — another one of Jet's friends, who is too young to go into space with the others — may be getting a new baby brother or sister. Mindy is nervous about her parents not being able to tell her apart from a new sibling, but is reassured when the kids learn how Jupiter keeps track of its many moons. 

Since Pluto is considered a dwarf planet rather than a regular planet, Mindy (pictured here with Jet's pet Sunspot) choses to reconstruct Saturn for her papier-mâché school project in a new episode of the PBS KIDS show "Ready Jet Go!" (Image credit: PBS KIDS)

In another new episode, "Project Pluto," the kids learn what it takes to be a planet and why Pluto was reclassified as a "dwarf planet." Sean's scientist mother, Dr. Rafferty, explains that there are three things that qualify a planet as a planet: It orbits the sun, has enough mass to assume a round shape and can "clear the neighborhood" around its orbit. 

While Jet, Sean and Sydney provide a good argument for why Pluto should be considered a planet, the small dwarf planet falls short in the last criteria. Dr. Rafferty explained that this means Pluto is not gravitationally dominant and is unable pull in or push away other nearby celestial objects in its orbital path. 

Even though Mindy had her heart set on using small Pluto for her papier-mâché planet project for school, she decides to reconstruct Saturn instead. 

"Ready Jet Go!" aims to educate children about science and space. At the end of each episode, astronomer Amy Mainzer hosts a fun and informational segment. Five new episodes are set to air this week, Aug. 15-19, on PBS KIDS. Here is a schedule: 

Aug. 15: "Date Night"/"Face on the Fritz"

Aug. 16: "So Many Moons"/"Project Pluto"

Aug. 17: "Sunspot and the Great Red Spot"/"Uncle Zucchini Babysits"

Aug. 18: "Which Moon Is Best?"/"Detective Mindy" 

Aug. 19: "The Tiny Blue Spaceship"/"Earth Camping"

Check local listings for specific times, and check the PBS KIDS website to learn more about the show.

Follow Samantha Mathewson @Sam_Ashley13. Follow us @Spacedotcom, Facebook and Google+. Original article on

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Samantha Mathewson
Contributing Writer

Samantha Mathewson joined as an intern in the summer of 2016. She received a B.A. in Journalism and Environmental Science at the University of New Haven, in Connecticut. Previously, her work has been published in Nature World News. When not writing or reading about science, Samantha enjoys traveling to new places and taking photos! You can follow her on Twitter @Sam_Ashley13.