[together] Ready!

Jet!

Go!

- ♪ Jet Propulsion ♪ ♪ That's his name ♪ ♪ Jet Propulsion ♪ ♪ He'll rocket to fame ♪ ♪ When he arrived, he created a buzz ♪ ♪ 'Cause there was no house ♪ ♪ And then there was, he said ♪ - ♪ People of Earth!

You ain't seen nothing yet!

♪ ♪ I'm from Bortron 7, and my name is Jet!

♪ - ♪ Jet Propulsion ♪ ♪ That's his name ♪ ♪ He looks like us ♪ ♪ But he isn't the same ♪ - ♪ I'm a space tripper and a galaxy crosser ♪ ♪ My parents brought me here in a flying saucer ♪ - ♪ And just to prove it was a fact ♪ ♪ He flew them out to space and back ♪ ♪ Jet Propulsion ♪ [spaceship whirring] - ♪ Jet Propulsion ♪ [together] Ready!

Jet!

Go!

- ♪ He showed up, and now it's a blast ♪ ♪ Looks like the future really got here fast ♪ - ♪ Nice to meet you, human race ♪ ♪ Tell me all about the place ♪ - ♪ Jet Propulsion!

♪ - ♪ Jet Propulsion!

♪ - ♪ Jet Propulsion!

♪ all: Ready!

Jet!

Go!

[mellow music] ♪ ♪ - [yawns] [birds chirping] [electricity crackles] [electricity crackling] - [squeaks, chirps] - Okay, Sunspot, ready for a little game of ticktacktoe?

[electricity crackling] - [squeaks, frenzied robotic sounds] - You don't wanna play?

- [low alarm-like blaring] - [gasps] Sunspot, what are you doing?

- [blaring continues] - [grunts] - Sunspot, a little help?

- [low grind] - What's up with Sunspot?

- I don't know.

He won't even play ticktacktoe, his favorite game.

both: What?

- I wonder if there's something wrong with him.

- Are you okay, Sunspot?

- [low growl] - Hmm, he's just folding his arms.

- [whooshing, chirping sounds] - Okay.

- [beeping] - Hmm.

- Something's bugging him.

What's going on, boy?

Tell me.

- [squeaking sounds] - I think that means no.

- Eh, let's be scientific about this.

He doesn't wanna fetch or even play ticktacktoe.

What does he wanna do?

- Mostly stand on his head with his arms folded.

- Let's try it the other way around.

[panting] Here, Sunspot, you throw the ring, and I'll fetch it.

Whoo-hoo!

[ring whooshes, thuds] Phew--wow.

Nothing.

- [sighs] - [whooping, beeping] - Here's your favorite chair.

You wanna sit down?

- Here's your water dish with exactly three ice cubes, just like you like it.

- [creaking, high-pitched beeping] - [gasps] Wait, I know something that Sunspot simply cannot resist... ♪ ♪ [utensils clattering] A giant Bortronian hoagie!

[anticipative music] ♪ ♪ - No, thank you.

all: [dramatic gasp] - Okay, Sunspot is not feeling normal.

Now he's speaking Earth-y.

Why is he acting like this?

- I think it's time to go ask the grown-ups.

[curious music] - All right, stick your tongue out, Sunspot.

- [squeaky noises] - How can we find out what's wrong with you if you don't cooperate?

- [shutter clicks] - Hmm, hmm.

[trumpet blares] - [robotic chirping] - Seems normal enough.

Let's take his pulse.

100,000.

- [gasp] Wow, is that bad?

- Eh, not for Sunspot.

- Okay, one more test.

Pay close attention, Sunspot.

[humming] Okay, where's the Earth tangerine?

[dramatic music] - [gasps] He got it wrong?

both: This never happens!

- [old car horn honking] - What does this mean, Mom and Dad?

- Don't worry, Jet, I've seen Sunspot behave like this once before.

- You did?

- Yep, when there was a particularly big sunspot on the Sun.

- Really?

A sunspot on the Sun affects Sunspot?

- Yes, super big sunspots on the Sun have a strange effect on Sunspot.

After all, he is named Sunspot.

- Whoa, slow down.

Now I'm seeing spots.

- Yeah, also he's named Sunspot because he has that sun-shaped spot on his belly.

- [gasp] There's an actual reason for his name?

- Right, yeah, just like me, Carrot-- I'm orange, and I grow out of the ground.

What, no-- that's not right.

- [low rumbling] - It's amazing that a sunspot on the Sun could affect Sunspot.

- Well, only a really big sunspot on the Sun could affect him like this.

- [stretching sounds] - Face, could we see what a really big sunspot looks like?

- Face 9000 ready to assist you.

What does a really big sunspot look like?

Take a look.

all: Ooh.

- Wait, how come I've never seen these spots before?

I see the Sun just about every day.

- That's because these pictures of sunspots are taken with special cameras that can look at the Sun.

You should never look directly at the Sun, Mindy.

- Right, it would hurt your eyes.

- Sunspots are darker concentrations of stormy energy on the Sun's boiling surface.

- Those don't look like any storms I've ever seen.

Are the storms on the Sun the same as the storms on the Earth?

- Not exactly-- the storms on the Sun are way hotter than Earth's storms.

Plus, they sometimes make solar flares.

all: Whoooa!

- And Celery guessed correctly.

There is an enormous sunspot developing on the Sun at this very moment!

both: Yes!

- This huge sunspot explains Sunspot's weird behavior.

- Huh, as I remember it, if a sunspot on the Sun gets particularly big, our own Sunspot's sunspot should also glow brighter.

all: Oooh!

Ahh!

[bright tones] ♪ ♪ ♪ ♪ all: Ahh, ooh.

- And actually, the cure for this is more sunspot.

- You mean, he needs to get closer to the Sun to get better?

- Exactly!

That's how it works on Bortron 7, anyway.

- Oh no, sounds like you're suggesting we fly to the Sun.

- What a great idea, Sean!

Let's fly Sunspot to the Sun, and get a close look at an actual sunspot.

- Uh, flying to the Sun doesn't sound like that great of an idea to me.

- Yeah, isn't the Sun actually too hot to visit?

- Oh, pfft, with Bortronian technology, we'll be perfectly safe from the Sun's heat and bright light.

We can study it right up close.

- What do you say?

Wanna go get a closer look at that sunspot, Sunspot?

- [whirring, beeping] - Whoo-hoo!

Then set the controls for the heart of the Sun!

- Or maybe near the Sun is better.

- Or not at all?

- Exactly!

Near the Sun.

Excelsior!

- Guess you're going to the Sun, Sean.

[wacky music] - Hop in, kids.

- [robotic noises] - Sunspot!

Car trip to the Sun and an actual giant sunspot!

- [balloon deflating noises] - Phew, I got him, I got him.

[panting] - Is this trip really necessary?

- Yes, Sunspot needs to get close to the sunspot so he'll feel better.

- [bleats] - Fine, but I'm gonna feel-- - ♪ Five, four, three, two, one ♪ ♪ Doors are shut, engines on ♪ ♪ Everybody in their place ♪ ♪ Let's go into outer spaaace!

♪ all: Ready, Jet, Go!

- [screams] [car whooshing] [adventurous music] [spaceship whirring] ♪ ♪ - Well, here we are.

Hoo, what an amazing yellow star your sun is.

You can take your hands off your eyes now, Sean.

- But I'm not supposed to look at the Sun.

- You can look through the saucer's windows.

They're safe and Bortronian.

[ding] - Uh, okay.

[mellow music] - [bleats, alarm blaring sounds] - What is it, boy?

[all gasp] Ooh, solar flares.

- Look at the size of that sunspot!

- It's as big as a planet.

[whooshing, crackling] - How are you feeling, Sunspot?

- [rapid beeping] - [gasp] Wow, he's really glowing now.

- Yup, and so is the Sun.

- Oh, this sun storm is fantastic.

- We're very close now.

The sunspot should start to work on Sunspot.

- How you doing now?

Better?

- Maybe there's a way we can test him and see.

- I know, let's test him with the cups and the tangerine like Mrs. Celery did.

Okay, round and round she goes, where she stops, nobody knows.

Pick which cup the tangerine is under, Sunspot.

[dramatic music] - [low growl] - Aww, he still isn't better.

- That's weird.

We're really close to the sunspot.

- Yes, we're close-- really close.

[whooshing] [deep, rumbling roar] [whooshing] [curious music] ♪ ♪ [rousing orchestral music] ♪ ♪ - [long squeal] ♪ ♪ - [gasp] Oh, my gosh!

Look at the size of that solar flare!

all: Wow!

- It's like all the volcanoes on Earth shooting out at once!

- I wonder if we should watch this solar flare from a cooler distance, back a ways from the Sun, like, on Earth.

- [high-pitched whistling] all: Ooh.

- Wow-o-wow-o-wow!

What a flare.

It must be a zillion miles long!

Oh, I'm sorry, I am not programmed to exaggerate.

It's more like hundreds of thousands of miles long.

- Um, question?

How does this solar flare affect us-- or specifically, me?

- Oh, not a bit, Sean.

In fact, it's headed far away from us, and also far away from the Earth.

- [gasps] Look.

The flare is making the sunspot smaller.

Maybe that'll help Sunspot feel better.

- What do you think, Sunspot?

Feel any better?

Wait, where is Sunspot?

[funky rock music playing] - [laughing squeals] all: Sunspot!

- Guess he's feeling better.

♪ ♪ [spaceship whooshes] ♪ ♪ - [excited squeals] ♪ ♪ - [sighs] You win.

Again.

- [chuckles] - Well, I'm glad to see you're back to your old self.

- [squeaking] - In fact, he wonders if we still have that hoagie we offered him earlier.

- Bon appétit, as the French Earthies say.

[mellow music] - [laughs] Oh, Sunspot-- you lovable rascal of a Bortronian pet.

- I am lovable, aren't I?

♪ ♪ [mellow music] [doorbell rings] - Hey, Mindy, I found the book you wanted to borrow-- "Hilda Horse's First Sleepover"?

- Oh yeah, thanks, Sydney.

My mom's going to read it to me and Lillian tonight.

- Great, so you're all set for your first sleepover with Lillian?

- Yep, and I'm going to pack everything Hilda Horse packed for her first sleepover-- chalk to draw with, sticks to roast marshmallows, and the best part-- a sleeping bag... with glow-in-the-dark stars on it, for when we sleep outside under the stars.

♪ ♪ - [squeaking] - Sounds great, but it's January.

Winter is too cold to sleep outside.

- But sleeping outside was going to be the best part.

We just have to.

- Why do you want to sleep outside so badly anyway?

- Because I wanted to look up at the stars to show Lillian the constellations.

- That's so nice.

I'll help you think of some ideas to make this a special sleepover.

- How about we ask Sean if we can borrow his astronaut suit and pretend we're on the Moon?

Is there anything else I can do?

- [squeaking] - Great idea, Sunspot!

Maybe Jet can teach you how to make a Bortronian exploding shake.

- Yay!

I bet Lillian's never seen one of those before.

♪ ♪ - Sure, you can borrow my astronaut suit to play space explorer.

- And sure, I'll show you how to make a Bortronian exploding shake.

Huh, looks like Sunspot's all set to sleep under.

- It's sleepover.

And thanks, you guys.

This is great!

I just wish we could sleep under the stars.

- Oh, well, if sleeping under the stars is so important to you, Why don't you just go outside during the daylight?

- Huh?

- You're under a star right now-- the Sun!

- No, not the Sun, a star.

- Guess what?

The Sun is a star.

- No, it's not.

- It actually is.

My mom said so.

- Then how come it's big, bright, and yellow and all the other stars are tiny, white, and twinkly?

- Because... Huh.

Wait here.

I need to go get an expert.

Mom?

♪ ♪ - [squeaking] ♪ ♪ - Mmm, so far it tastes like vanilla.

- Perfect.

All we have to do is completely start over.

- Hey, guys, Sean's back and he brought his mom.

- Okay, one minute.

We just need to figure out why our exploding shakes aren't exploding.

- That's why we have recipes.

- [squeaking] - Heh, don't need 'em!

Got 'em all right here.

I remember everything.

- Did you remember the Bortronian paprika?

[buzzer blares] ♪ ♪ - Everything except that.

[joke drumroll] [anticipative music] - [squeals] ♪ ♪ [panting] ♪ ♪ [splat] - Yay!

Lillian's going to love this.

both: Hi, Dr. Rafferty!

- Hi, kids.

So, who thinks the Sun is not a star?

- I do, I do, Dr. Sean's Mom.

- I see, now, why is that?

- Easy.

The Sun is big, hot, and yellow, and it's out in the daytime.

The stars are little and white and twinkly and come out at night.

- Wonderful observations, Mindy.

But what if I told you that the Sun actually is a star?

- It is?

How can that be?

- And how can it be just like the other stars?

- Stars have different colors to show us how hot they are.

Our sun is a yellow star.

Come and sit and watch what happens to this poker when I heat it up in the fire.

And remember, this is metal, and it's gonna get really hot in the fire-- that's why I'm wearing a big oven mitt.

But don't try this at home, okay?

- We won't, Dr. Sean's Mom.

- Whoa, it's turning red.

- Is that because it's getting hotter?

- Exactly, Sydney.

And watch as it continues heating up.

- Now it's white hot.

That's even hotter, right?

- Yes.

Our sun is... - Yellow.

- So yellow stars are less hot than white, but hotter than orange, right?

- Exactly.

- But if the white stars up there are bigger than the Sun, why don't they look bigger to us?

- Yeah, why do the stars look like tiny dots?

- And if they're hotter than the Sun, why can't we feel the heat from them?

- More great questions!

Let's go inside to investigate the answers.

Let's say this flashlight is a star.

Now you're close to it, but watch this.

- [squeaking] [robot buzzes, grinds] - What happened?

- Sunspot's flashlight got smaller.

- You mean the light from the flashlight looks smaller.

- What happens when the flashlight gets closer?

♪ ♪ - The light looks bigger!

- And Sunspot rides up on his unicycle.

- [laughs] That probably won't happen every time.

- You never know with that pet.

- Heh.

- So the Sun looks bigger because it's closer to the Earth than the other stars?

- Right.

- I didn't know stars could be different colors and different sizes.

- Oh, yes, there are yellow stars like our sun but also red, orange, blue, and white.

- Whoa.

This changes everything!

- [laughs] Any questions?

- I was wondering what it would look like to live under a sun that's a different color.

- Ooh, I was hoping one of you would be wondering that.

Now you can find out for yourself with these colored sunglasses.

[mellow music] all: Whoa!

- Cool!

- Awesome!

♪ ♪ - [squeaking] - Oh, wow.

This doesn't even look like your yard, Jet.

♪ ♪ [squirrel chirps] ♪ ♪ [bird twitters] ♪ ♪ - [squeals] ♪ ♪ - [laughs] You're all orange, Mitchell.

[laughs] - Um, it's not me.

Your glasses are all orange.

- Oh, I forgot.

Now you're regular color again.

Orange, regular, orange, regular.

Orange, regular.

Orange you glad you're not permanently orange?

- Very funny.

Why do you guys have all these strange-colored sunglasses?

- We're just experimenting to see what it would look like if we lived under a different-colored sun.

- A different-colored sun?

- Yeah, lots of stars in the sky are different colors.

- I don't get it.

There's only one sun and it's yellow.

The stars are just little dots.

- That's because those stars are far away.

Our sun looks bigger because it's a way closer star.

- So you're saying if those little twinkling stars were closer, they'd look big like our sun?

Where would you get a strange idea like that?

- With science!

- Scientifically, things always look bigger when they're closer.

- Yeah, right, prove it.

- Look, see that tiny dot twinkling out there?

- So, you're going to tell me that tiny dot is a faraway sun?

- Nope, we're going to tell you it's a Sunspot on a unicycle getting closer.

- And as it gets closer, it will look bigger.

- Sunspot on a unicycle?

Let me see!

- [squeaks] - [gasps, grunts] Ugh.

- [squeals] - Cody could do that too, if he wanted to.

[dog squeaks, snores] [mellow music] ♪ ♪ - Uh, Propulsion, what are you doing?

- Yep, putting up my holiday lights, of course.

- But the holidays are over, Everyone else is taking their lights down.

- Exactly.

Eh, the perfect time to stand out on the block.

- Oh, trust me, Propulsion, you don't need lights for that.

- Oh, why, thank you!

And happy after-holidays to you!

♪ ♪ [grunting] [ladder clatters] Whoo!

- I think I have it all together now.

Thanks for helping.

- Whoa-ho!

- This will be the best sleepover yet, Mindy!

- Whoa... - I hope so.

I still wish we could sleep under the stars, though.

- Speaking of stars, it's getting dark out.

You better get home before Lillian gets here.

- Whoa... Oh, hi ladies.

Hey, do you wanna flip on that light switch for me?

- Sure.

[lights whirr] - [chuckles] Pretty sweet after-holiday lights, right?

- Yeah, they're really colorful and twinkly, like stars.

- [gasps] I have an idea, Mindy.

Mr.

Propulsion, can we borrow a few lights if you have extra ones?

- Ah, sure, take the whole string.

- Thank you.

- Come on, Mindy, let's go set up your room.

- Merry After-Christmas!

Happy After-New Year!

- Look, everyone-- a perfect place to sleep under the stars.

- [squeaks] - We can hang these lights from the ceiling.

- Ho!

Great idea, Sydney!

- Yeah, they twinkle like real stars!

- Huh, maybe we can hang them in the shape of a constellation.

- What about the Orion constellation?

- Let's do it!

[robot backpack whirring] [energetic music] - Okay, um, put a red light there for the star Betelgeuse.

- Right.

- And a blue light there for Rigel.

- Got it.

[robot whirring] [doorbell rings] - It's Lillian!

Thanks for everything, guys.

- The stars sure are pretty.

- That's a constellation called Orion, the hunter.

My friend, Sydney, taught me about it.

- I think I see the hunter.

- Can you see that red star?

That's Betelgeuse.

- The light does look kind of red.

- And that blue one is Rigel, see it?

- Whoa, that's amazing, I didn't know stars could be different colors.

- Mindy, Lillian, time for bed.

- [squeaking] - I'm not tired, but I guess Sunspot is.

[smooch] - [squeaks] - What's your favorite part of our sleepover so far?

- Let's see.

Hide-and-seek was great, and the exploding shake was even better.

- [squeaks] - [giggles] Yeah, that was pretty fun.

- But the best part was seeing the red and blue stars in the Orion constellation.

[sighs] I still wish we could sleep under the stars.

[gentle piano music] - [squeaking] [electricity buzzes] - [gasp] Wow!

We are sleeping under the stars!

- See?

We made our own Orion!

And red Betelgeuse, and blue Rigel.

This is the best sleepover ever.

- ♪ Jet Propulsion ♪ [together] Ready!

Jet!

Go!

[upbeat music] ♪ ♪ - ♪ Jet propulsion!

♪ - ♪ Jet propulsion!

♪ - ♪ Jet Propulsion!

♪ all: Ready!

Jet!

Go!