Mindy has to go to bed when the Sun goes down, but she's having such a fun day with her friends. She asks Jet and the others to help her keep the Sun from going down. The older kids humor Mindy and try to help "slow down the Sun." All their efforts make Mindy so sleepy that she decides to go home and sleep.Sydney and Jet are having a hard time explaining to Mindy that the Sun doesn't move - the Earth is moving around the Sun, so the Sun seems to move. Then Sean comes over dressed as his science hero Galileo, getting ready to do a school report. Mindy asks "Galileo" to explain why the Sun seems to move, and Sean practices for his report by explaining how the planets move, in character as Galileo!

It's evening at the cul-de-sac, and the kids are looking at two asteroids through Sean's telescope - one is light-colored and one is dark. Meanwhile, Mitchell's dog Cody seems to have run away because he doesn't like the black sweater Mitchell put on him. The kids learn about how, just like asteroids, some things are easier to see in the dark than others, like a white card is easier to see than Cody's black sweater. This amount of brightness is called "albedo."The kids go to their local beach to surf, but notice that the beach looks completely different from the last time they stood there. There's way more sand, and the ocean is far away! They decide to be detectives and study what has happened, and learn that the larger and smaller beach is caused by the tides - the rising and falling of the ocean.

It's evening at the cul-de-sac, and the kids are looking at two asteroids through Sean's telescope - one is light-colored and one is dark. Meanwhile, Mitchell's dog Cody seems to have run away because he doesn't like the black sweater Mitchell put on him. The kids learn about how, just like asteroids, some things are easier to see in the dark than others, like a white card is easier to see than Cody's black sweater. This amount of brightness is called "albedo."The kids go to their local beach to surf, but notice that the beach looks completely different from the last time they stood there. There's way more sand, and the ocean is far away! They decide to be detectives and study what has happened, and learn that the larger and smaller beach is caused by the tides - the rising and falling of the ocean.

While making a cake, Carrot and Mindy find they are one are short one ingredient, so they head to the store. But Carrot accidentally pushes a wrong button on the wagon's newly-updated control panel, and they take off into outer space! Using a diagram, methodical experimentation, and record keeping, Mindy and Carrot figure out how to properly fly the saucer back home, where they finally finish the cake.Mindy has a problem: now that she's been to space with the bigger kids, she realizes how much there is out there to see! How can she decide where to explore next? Sydney asks her mom, Dr. Skelley, who presents them with the very first edition of Commander Cressida comics! In reading the comic book, Mindy comes to appreciate that she, like Commander Cressida, can explore space "one adventure at a time."

Jet is amazed to find out that the entire Earth doesn't have the same season at the same time. So he flies with Sydney and Sean from the northern hemisphere to the southern hemisphere to compare and experience holidays in winter and summer...all in one day!Mindy feels bad that she's the smallest kid in the group, so sympathetic Jet and friends use a shrink-ray and become her size. The plan goes awry, and Jet, Sean, Sydney, and Sunspot become the size of mice. Mindy has to follow intricate diagrams to reverse the shrink-ray!

Jet is amazed to find out that the entire Earth doesn't have the same season at the same time. So he flies with Sydney and Sean from the northern hemisphere to the southern hemisphere to compare and experience holidays in winter and summer...all in one day!Mindy feels bad that she's the smallest kid in the group, so sympathetic Jet and friends use a shrink-ray and become her size. The plan goes awry, and Jet, Sean, Sydney, and Sunspot become the size of mice. Mindy has to follow intricate diagrams to reverse the shrink-ray!

Sunspot begins acting strangely, and Jet fears that he is sick. Carrot and Celery examine him, and decide that he's acting strange because of a large sunspot on the Sun. The only way to cure him is to bring him to the Sun, and get him close to the huge sunspot.Mindy wants to have a sleepover outside with her friend Lillian, but it's winter and too cold to sleep outside under the stars. Sean points out that they are under the light of a star all the time - our Sun! Mindy learns that our Sun is a star, just like the tiny ones we see at night.

Each kid brings their personal project up to the tree house, and each contributes to a huge mess. Now they can't do anything in the tree house because it's too messy, but none of them want to clean up the other's mess. They have to learn to share the responsibility and clean it together.When Mindy tells Jet that clouds are made of cotton candy, and defends this idea because she heard a friend say so, Sean and Sydney set out to show her how to separate fact from fiction through research! Celery takes them up into the clouds to see for themselves.

Each kid brings their personal project up to the tree house, and each contributes to a huge mess. Now they can't do anything in the tree house because it's too messy, but none of them want to clean up the other's mess. They have to learn to share the responsibility and clean it together.When Mindy tells Jet that clouds are made of cotton candy, and defends this idea because she heard a friend say so, Sean and Sydney set out to show her how to separate fact from fiction through research! Celery takes them up into the clouds to see for themselves.

"Tiny Blue Dot" - A rollicking, song-filled recap of the Propulsion family's mission to Earth - as intergalactic travel writers, they really know their way around the Milky Way, and know the difference between a lovely, livable "Goldilocks Planet" like Earth, and the other, way less-livable planets! Curriculum: The Earth is a very rare and wonderful planet in the vastness of space, with its ideal size, its distance from its sun, its breathable atmosphere, liquid oceans, and ability to sustain life."Earth Camping" - Mr. Petersen and Mitchell go camping with Carrot and Jet. The two dads have opposite approaches to setting up tents and preparing food, but when the dads get off track during a hike, the boys help them all find their way back using the compass, and the skills they've learned from their dads (turns out the kids were paying attention all along!). Curriculum: We can find our place outdoors by understanding how to find direction - north, south, east, and west. The Sun rises in the east and sets in the west. A compass uses the Earth's magnetic field to find which way is north (the small magnet inside the compass is drawn by the Earth's magnetism to point to the north pole).

"Sunday Drive" Parts 1 & 2 - After the Propulsions download their new version of their saucer dashboard operating system, things are out of whack. Their test drive to Mars - usually a simple trip - is complicated by the new dashboard. They zip to Venus and Saturn instead... and then finally land on Mars, so they think. They're actually in an Earth desert, Mars-like at first (hot, red soil, lack of water), but soon they realize where they are. A desert vs. Mars comparison is made. Before heading home, the family decides that the old, dependable saucer operating system works just fine for them. Curriculum: An Earth desert and a Mars desert have some similarities, but are also very different. A comparison is made between the two, including life or lack thereof, temperature, water, and soil.

"Sunday Drive" Parts 1 & 2 - After the Propulsions download their new version of their saucer dashboard operating system, things are out of whack. Their test drive to Mars - usually a simple trip - is complicated by the new dashboard. They zip to Venus and Saturn instead... and then finally land on Mars, so they think. They're actually in an Earth desert, Mars-like at first (hot, red soil, lack of water), but soon they realize where they are. A desert vs. Mars comparison is made. Before heading home, the family decides that the old, dependable saucer operating system works just fine for them. Curriculum: An Earth desert and a Mars desert have some similarities, but are also very different. A comparison is made between the two, including life or lack thereof, temperature, water, and soil.

When Astronaut Ellen Ochoa comes to visit the DSA and review an engineering project, she runs into the kids, who are running Sean's lemonade stand to raise money for a rocket to Mars. They end up hanging out with her before her DSA meeting. They solve an engineering problem together, which inspires Ellen to use the same solution with the engineering project at the DSA.

When a strange bird lands in Jet's yard, the kids learn it is a migrating Snow Goose who is using Jet's yard as a temporary stopping-off place. Several more Snow Geese arrive, and the kids set up an "observation station" to make notes about their migrating habits.Sean accidentally drops his beloved Neil Armstrong action figure into a large crack in the ground in the woods behind his house. The kids all work together to engineer some kind of robotic arm to reach down into the crack and rescue Neil!

When a strange bird lands in Jet's yard, the kids learn it is a migrating Snow Goose who is using Jet's yard as a temporary stopping-off place. Several more Snow Geese arrive, and the kids set up an "observation station" to make notes about their migrating habits.Sean accidentally drops his beloved Neil Armstrong action figure into a large crack in the ground in the woods behind his house. The kids all work together to engineer some kind of robotic arm to reach down into the crack and rescue Neil!

"Mission to the Moon" - Sean tells Jet, Sydney, and Mindy about the Apollo 11 mission, and the kids decide to do a real-life reenactment of man's first mission landing on the Moon! Curriculum: The first manned mission to the Moon took place on July 20, 1969, and the first two humans on the Moon were Neil Armstrong and Buzz Aldrin. The astronauts were launched from a Saturn V rocket on the Apollo 11 mission."Mindy's Moon Bounce House" - Jet gives a special birthday gift to Mindy that allows her to defy gravity. She has so much fun hovering above everyone, the others have to convince her to come back to Earth in time for her party. Curriculum: Gravity is a natural phenomenon by which all physical bodies attract one another. Gravity gives weight to physical objects and causes them to fall towards the ground when dropped.

The kids observe the full Moon at night and wonder why it seems to have a "face." They research why the light and dark splotches seem to make a face, and ultimately decide to fly to the Moon's surface so they can see for themselves what the light and dark splotches are made of.The kids are digging again down by the Lake, and dig up a part of an old rocket. This leads Sydney to tell another "Lone Star" story, this one about how long ago, when Boxwood Terrace was called "Boxwood Territory," early astronomer Lone Star engineered and built the first rockets. This inspires the kids to engineer and build their own "foot rocket."

The kids observe the full Moon at night and wonder why it seems to have a "face." They research why the light and dark splotches seem to make a face, and ultimately decide to fly to the Moon's surface so they can see for themselves what the light and dark splotches are made of.The kids are digging again down by the Lake, and dig up a part of an old rocket. This leads Sydney to tell another "Lone Star" story, this one about how long ago, when Boxwood Terrace was called "Boxwood Territory," early astronomer Lone Star engineered and built the first rockets. This inspires the kids to engineer and build their own "foot rocket."

Sean is planning his first sleepout under the stars with his Space Scouts troop, but the weather is threatening, and it looks like his sleepout will be rained out. The kids get help from Mitchell , building a weather observation station to make a weather prediction, and visit the DSA for further help by tracking the weather with satellites.A total eclipse of the Sun is coming to Boxwood Terrace! The kids prepare a Total Eclipse song and dance to perform at the DSA, where the whole town is gathered for the event. Meanwhile, Sunspot attempts to explain the eclipse to all the local animals so they won't think it's night and sleep through it.

Jet is amazed to find out that the entire Earth doesn't have the same season at the same time. So he flies with Sydney and Sean from the northern hemisphere to the southern hemisphere to compare and experience holidays in winter and summer...all in one day!Mindy feels bad that she's the smallest kid in the group, so sympathetic Jet and friends use a shrink-ray and become her size. The plan goes awry, and Jet, Sean, Sydney, and Sunspot become the size of mice. Mindy has to follow intricate diagrams to reverse the shrink-ray!

Jet is amazed to find out that the entire Earth doesn't have the same season at the same time. So he flies with Sydney and Sean from the northern hemisphere to the southern hemisphere to compare and experience holidays in winter and summer...all in one day!Mindy feels bad that she's the smallest kid in the group, so sympathetic Jet and friends use a shrink-ray and become her size. The plan goes awry, and Jet, Sean, Sydney, and Sunspot become the size of mice. Mindy has to follow intricate diagrams to reverse the shrink-ray!