Starling has a crucial flight test to pass before she can move on with her training.

Robyn spots a new asteroid but can't determine its size; a stone contains living bacteria.

The cadets are on assignment to dig for Helium-3; Vulture is up to his old tricks.

Vulture fires Dodo; the cadets and teachers journey to far-off Deep Space Station Gagarin.

When a physically disabled new cadet arrives one day, the racers are afraid to ask about his short wing.

A ghost story about an asteroid; a mysterious musical frequency from space makes everyone sing or whistle it.

Stardust Bay is abuzz about the winter solstice; AVA wonders how much fun it would be to play Orb-O.

Crane bets Vulture that the sun can rise in the west; when Eagle alone sees a bright light in the sky, it disappears before the others can view it.

Headmaster Crane and Vulture must work together when a geomagnetic storm strands them in space; Hawk prepares for the Captain Cosmos convention.

Coot helps cadets and teachers with projects; Starling's doll goes missing; the cadets must place Coot's new satellite into orbit around Jupiter.

Hawk receives a mysterious Valentine's invitation to meet an admirer on the far side of the moon; the cadets make vacation plans for winter break.

The cadets make plans for vacations into unexplored realms of the solar system; Hawk takes charge of the workshop in Coot's absence.

Eagle's cold keeps him from participating in the test of a new solar engine; the Racers test Coot's new color-analyzing spectrometer.

AVA shuts down when the cadets ask her a tough question about solar storms; Starling freezes up while playing hide-and-seek on Saturn's moons.

Robyn practices her choreography and Starling brushes up on her safety techniques for an upcoming talent show; the cadets get a lesson in sharing.

The cadets and their teachers select items to pack in a time capsule; Headmaster Crane sends students on a scavenger hunt through the solar system.

Starling trains to become a Space Racer, with Vulture overseeing her progress; Vulture replaces Coach Pigeon with a robot spy.

Raven is swept into space while trying to take a sample from a passing comet; Starling boards Coot's rescue sub to save Sandpiper after a splashdown.

The cadets are called on to help when a classmate named Crow disappears; Raven deceives Coot to find a way to beat Eagle in the Cloud Sprints Race.

Starling is alarmed when the moon seems smaller than it was the night before; the cadets investigate a loss of power on the moon.

A wrong move during an Orb-O game sends a space station plummeting toward Earth; the Racers stumble upon a scheme by Vulture in a dormant volcano.

Earth science and astronomy take center stage in this animated series from PBS Kids. Two neighborhood kids -- Sean and Sydney -- befriend the new kid on the block, Jet Propulsion, who just happens to be an alien from planet Bortron 7. Together they explore the solar system and how it affects the planet, while also learning about friendship and teamwork. The series features live-action interstitials with astronomer Dr. Amy Mainzer.

Space adventurer Miles Callisto is always ready for action, traveling through the universe with his family and his best friend, a robo-ostrich named Merc. The family includes mom Phoebe, the ship's captain who sets a good example and encourages her family on every mission; dad Leo, a laid-back pilot and inventor who isn't afraid to try new things; and big sister Loretta, who is a brilliant computer coder and always has her brother's back. Together, they use teamwork and problem solving as they encounter obstacles while completing missions throughout outer space for the Tomorrowland Transit Authority. The Callistos' home base is a floating space station called the Stellosphere, and the StarJetter is the vehicle they use to go to other planets and galaxies. Each episode features a fact related to space or science that inspires the storyline.

A yellow fusilier fish named Splash and his friend Bubbles, a Mandarin dragonet, explore life under the sea with their pals in "Splash and Bubbles," the newest series from PBS Kids. Co-produced by The Jim Henson Co., the animated series is designed to teach children aged 4-7 about marine life and the ocean and help them build social-emotional skills. The series features the voices of John Tartaglia (who also created the series), Leslie Carrara-Rudolph, Raymond Carr and Aymee Garcia.

A band of aliens explores the galaxy getting into and out of trouble in a series of adventures designed to teach young viewers the basics of science and astronomy, as well as life lessons in tolerance and conflict resolution. Bula, Zeeter and the rest of the Zula gang work to make the Galaxy a better place to live. Their efforts are opposed by the villainous Dark Truder and Deliria.

This animated series centers on house cat Fred, a dreamer of the great outdoors. Once his family leaves for the day, Fred becomes Nature Cat and with the help of his animal friends, he embarks on action-packed adventures that allow him to explore the natural world. The series is voiced by comic actors, including "Saturday Night Live" alums Taran Killam (Nature Cat), Kate McKinnon (Squeeks), Bobby Moynihan (Hal) and Kenan Thompson (Ronald). Kate Micucci rounds out the cast as Daisy.

In this series, young Noddy becomes a detective as he and his friends set out to solve mysteries in Toyland. Whenever something is amiss in the colorful land, Noddy and best friends Bumpy Dog and Revs get on the case to find out what is going on and how they can make things right. Noddy uses his investigation kit and WhoWhatWhere tablet to help the gang solve the mysteries. The CGI series features the character that originally appeared in Enid Blyton's children books beginning in 1949.

When you look at the night sky, you might notice three stars to the right of Alpha Centauri. That's the location of the Astroblast Space Station, a cosmic clubhouse where visitors flock from planets near and far to play with old friends and make new ones. An animal team -- Comet, Halley, Sputnik, Radar and Jet -- runs the station under the watch of Sal the Octopus. While the animals have disparate personalities that sometimes lead to strife, the crew members learn to accept their differences, help one another and become friends.