[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!

[upbeat music] ♪ ♪ - Hopscotch, huh?

This is kind of like a game we play on Bortron 7 called "planet to planet."

- "Planet to planet?"

- Sunspot was the Bortron System "planet to planet" champ.

- [excited chirping] ♪ ♪ - [chirping] - Oops, sorry, Sunspot.

- [chirps] - Hey, guys.

My mom just called from the DSA.

She said there's a problem on Mars.

- What's the problem?

- Something to do with their rovers, Boop and Beep.

And we get to help them solve it.

- Really?

They need our help?

I love solving problems.

Let's go!

Guys, hello?

Major Mars problem to solve at the DSA.

Time's a-wasting!

♪ ♪ both: Hi, Beep!

- Hi, Dr. Rafferty!

- Hi, Mom!

- Hi, kids.

Welcome to the Mars Yard.

So here's today's mission: We think we may have found a mountain on Mars that's actually a volcano.

all: Wow!

[excited beeping] - I know, it's exciting, right?

So in order to see if it's a volcano, we're sending Boop to explore.

You remember Boop?

- Sure!

She's Beep's twin sister on Mars.

- Right!

Beep is an exact copy of Boop.

We keep Beep here in the yard to help us try things out before we have Boop try them on Mars.

[excited beeping] - Okay, but why can't Boop just go see if that Mars mountain is a volcano?

- Hmm, good question, Jet.

There's a deep ravine between Boop and the mountain, and she has to get across it.

It's a difficult job and could be dangerous.

- Wow.

That's a pretty deep ravine.

- So before we tell Boop how to go, we have to find a good way for Beep to get across the ravine?

- Exactly!

- We're here to help.

We're on it.

- [chirping] - Hmm.

Sunspot's right.

That's our Mars Yard copy of the ravine.

He's a... very smart pet.

[uncomfortable laughter] - Yeah.

- Huh.

- So first Beep will go across this ravine to test it out before Boop does it in the real ravine on Mars?

- Exactly, Jet.

First we have to get Beep to move to the edge of the ravine, so she'll be in the exact position that Boop is in on Mars.

All rovers have to be programmed, or told what to do, like a computer.

Hmm...aha!

Beep is ready to roll.

- There she goes!

[beeping] - Perfecto.

Now it's time for us scientists to brainstorm.

- "Brainstorm"?

[laughing] Wow.

What a hilarious Earth word.

Thunder and lightning in your brain?

Cool!

- [chirping] - [chuckles] Actually, "brainstorm" means to come up with new, creative ideas.

- So do you have any ideas of how to get Beep, on her own, to the other side of the Mars Yard ravine?

- Hi, kids.

We brainstorming?

all: Yes!

Hi, Bergs!

- [laughs] We're "brainstorming"!

[chuckles] - So let's think.

Beep needs to get to the other side of the ravine.

- Right, and the real challenge is to get across that deep crack at the bottom.

- Hmm.

We could have Beep push rocks and make a bridge across the crack.

- Or we could put a jet engine on Beep!

She could fly to the other side.

- Mm, unfortunately, these rovers can't fly.

- Yet!

- Maybe Beep could roll down, pick up speed, and rev up and hop over the crack to the other side.

- [barking] - Hey, Sunspot has an idea!

- [chirping] - Beep could hop from rock to rock till she reaches the other side.

- [laughs] It's kind of like hopscotch.

- Or "planet to planet"!

- [twittering] - Wow, never seen a pet like Sunspot.

- Yeah... that's what I said.

- Yeah.

- [nervous laughing] Yeah.

- Yeah, he's quite a gymnast.

- He means pet.

House pet.

- Anyway!

So, scientists, what's the answer to the Beep and Boop ravine question?

- Well, scientists don't always have the answer.

Let's take a look at the Mars ravine and with your suggestions in mind, figure out the best way together.

- But maybe Boop can just jump over the crack?

- Good idea!

Hmm.

If she can pick up speed.

- And with all those boulders in the way, she can only pick up speed if she goes down the ravine in a zigzag pattern.

- I think we could use some of each of your ideas.

Here's what we're thinking... all: Three, two, one!

[excited beeping] - All right!

Beep's going down the ravine in a zigzag pattern.

- She's going faster and jumping over the crack!

[exciting music] ♪ ♪ all: She made it!

- [cheering] - Whoo-hoo!

Go Beep!

- And now she's hop-scotching up the far side of the ravine.

all: To the top!

[beeping] [all cheering] [joyful beeping] - [chirping] all: Beep!

Beep!

Beep!

Beep!

- All right!

Now we know that Boop can do the same thing on Mars to get across the ravine.

Bergs is communicating this to Boop on Mars.

- Uh... can't you just call Boop?

- [chuckles] Not exactly.

We use those giant antennas to communicate the information to a satellite right above Mars.

The satellite beams the information down to the rover on Mars.

And since Mars is so far away, it can take anywhere from 4 to 24 minutes for the information to get from Earth to Mars.

This depends on where each planet is in its orbit.

- Wow.

I thought Earthies-- [groans] I mean, us Earth people had faster technology.

- Maybe one day, we'll be able to just zap information to Mars in two seconds.

- Maybe.

Okay, now it's time to get Boop over to the other side of the Mars ravine.

- And...send.

♪ ♪ - Yes!

Get that rover over the ravine!

- Do it like Beep did, Boop.

I know you can!

♪ ♪ - [gasping] - Ah!

♪ ♪ [all sigh in relief] - Wow!

- Whoa!

♪ ♪ all: Whoa!

- She's gonna make it!

♪ ♪ - She made it!

[all cheering] - Yeah!

- Boo-ya!

Science!

♪ ♪ - [chirping] [beeping] - Everything's good, Beep.

Boop's on the other side, safe and sound.

- Yes!

Thanks so much, kids.

And now Boop can climb that mountain to see if it's an actual volcano.

Our mission is on schedule.

- Well, I have to go.

I have a very important program to work on.

Thanks, kids!

- [chirping] ♪ ♪ [chirping] - Uh, my watch.

How did--you--wha-- [chuckles] Oh, that's some pet.

all: Bye, Bergs!

[whirring] - Hey, what's Beep doing?

- Looks like Beep's moving that rock to a certain spot.

Huh?

Now she's waiting... for what?

[whirring] Now she's gone to a different rock... and pushing it to a new spot.

Why is she moving the rocks around?

- Maybe she's making a map of space?

- Huh.

We must figure out this mystery right now.

Excelsior!

[fanfare rings] - This is so weird.

Now Beep has cleared all the rocks away.

[Beep whirring] Hey!

She's moving a rock again!

[whirring] - We should keep track of what Beep's doing.

I'll make a chart.

- Good idea.

I'll help.

- And Sunspot can take pictures.

- [excited chirping] [jazzy piano music] ♪ ♪ [camera shutter snapping] ♪ ♪ [whirring] - It looks like some kind of pattern.

- Let's go home and see if we can put the pattern together.

- Yeah, and try and figure out what Beep is up to.

all: Bye, Beep!

[Beep beeping] - Wow!

[Boop whirring] Did Boop just move that rock?

Nah, I was probably just imagining it.

[electronic barking] [printer whirring] - Okay, what is Beep up to?

- Hey, look!

If we put Jet's pictures in the right order, we can get a view looking down on that whole part of the Mars Yard.

- Great idea.

♪ ♪ It's like a puzzle.

- Hmm...ha!

- I think this one goes here.

♪ ♪ both: Beep and Boop are playing a game!

- We figured it out!

[laughs] Wait, what game?

♪ ♪ - Tic-tac-toe.

We are pretty sure Beep and Boop are playing the game tic-tac-toe.

- [sipping] - We looked at our chart and the video, and we put the pictures we took in the right order.

- The nine pictures made an overhead map of where Beep left the rocks.

- And that's how we figured out that Beep and Boop are playing a game.

- You kids are truly awesome.

You figured it out exactly.

Beep and Boop are playing a game.

- Huh?

Really?

- We've been testing out some new software on Beep and Boop.

We're teaching them to solve problems by playing tic-tac-toe.

- And hopefully, this will help the rovers to "think" more on their own.

- Just like you kids did.

And Sunspot, who somehow has my watch again.

- [playful chirping] - [laughs] The DSA scientists taught Mars rovers how to play tic-tac-toe.

You guys have the best job.

- Maybe someday, we can play other games with rovers... on Mars!

- [slurping] - Uh, hey, that's my coffee.

- [squeals] ♪ ♪ - Three in a row, tac-toe-tic!

- [laughs] Right.

Except it's called tic-tac-toe.

- [excited chirping] - Sure, Sunspot.

Let me show you how to-- - [chirping] ♪ ♪ [chirps] - Okay, Sunspot.

You seem pretty good at this.

Let's go again.

It's on!

- [chirping] both: Whoo-hoo!

♪ ♪ [rover whirring] [beeping] ♪ ♪ [xylophone music] - I think I see something.

- Let's see.

- What is it?

Is it a new star?

- Uh, I'm not sure.

Take a look.

- Oh, I hope it's a new star!

I hope it's a new star!

- Let me take a look.

- So is it a new star?

Is it, Sean?

- I don't know, I can't quite tell yet.

- What's taking so long?

Why can't you tell?

Just look for something twinkly!

- It's actually hard to find a star that hasn't been found already.

- But there are lots and lots of stars up there.

Let me try.

[grunting] - What are you gonna do if you find a new star, Mindy?

- Well, it was going to be a surprise, but I wanted to name one after someone very special... [hopeful music] Sunspot!

- [barking] [excited chirping] - Oh, well, thanks so much.

Now, where's my Sunspot star?

- [cheerful barking] - Okay, I see one!

Done!

- You found a new star already?

- Yup.

It's the Sunspot Star.

See for yourself.

- I'm not quite sure exactly which one you mean.

- It's up there-- that one.

You know, in the middle of all those other ones.

You're a star, Sunspot!

- [chirping] - [giggling] - Uh...

I do see a bright star, but are you sure no one has found that one yet?

- Maybe someone else saw it before, but I'm the one who named it, right?

- You know, Mindy, most of the stars have names already.

- Really?

All those stars up there have names?

- That's right.

- So what are they?

Lauren, Sophia, Jake?

- Not exactly.

- Camilla, Alejandro, Lucia?

- Not exactly.

- Or maybe it's called... [speaking Bortronian] As we say on Bortron 7?

- Definitely not.

- Actually, most of the bright stars were named by people who lived a long time ago, so they have ancient names like... Aldebaran, which means "the follower."

- Or Vega, which means "swooping eagle."

- That's kind of pretty.

- So take a look again, and see if you can find the one you called Sunspot's Star, and then we'll try to figure out if it already has a name.

- I can do that.

Just let me get my Sunspot.

Please?

- [chirping] - Thank you.

Hmm... was it this one?

Or that one?

You guys, all the stars just look like little dots to me.

Are you sure anyone really knows which one is which?

- Well, not completely sure.

- I have an idea.

Let's go to the DSA tomorrow and see if my mom and the other scientists can show us how to tell which star is which.

- Good idea, Sean!

- Can I come too?

New rule--my mom says I can go to the DSA if I'm with you guys.

So can I?

- You bet, Mindy!

- Goodie!

- See you tomorrow!

- Good night, Sunspot Star.

Wherever you are.

- [chirping] ♪ ♪ - So you want to know whether the star you found is a new one?

- Right!

Mindy wants to name a star after Sunspot.

- [chirping] - Hmm.

What can you tell me about the area of the sky where you saw this star?

- Here's a picture of it.

- Wow, that's a very good drawing, Mindy.

- Yeah, it's pretty good, right?

And I only had three crayons.

- I hope it helps.

- Actually, it does.

You see, Mindy, when you drew some of the other stars around this one, I could tell what the constellation was.

- You could?

- [clears throat] - I mean, of course you could.

- One more question: what's a consternation?

- [laughing] A very funny sounding word.

- [chuckles] A constellation is a group of stars that make a picture in the sky.

Mindy's star looks like it might be in the constellation Leo, which means "lion."

The bright star is called Regulus.

- Regulus?

What's that mean?

- It means "little king."

- [chirping] - You see, a long time ago, when people looked up at the skies, they tried to imagine what the shapes might look like to them.

Do you see the lion shape?

- I think I see a lion shape!

[lion roars] [chuckling] Ooh, ooh, ooh!

I like this!

Are there more constellations than just this lion?

- Absolutely.

Astronomers, or-- - Scientists who study the stars.

- Oh, very good, Sean.

Astronomers have identified 88 constellations.

- Who discovered constellations, anyway?

- Oh, me, me, me!

Me, me!

Me, I know, I know!

- Sydney, this one's all yours.

- I don't think any one person discovered constellations.

Like Dr. Rafferty said, they're a group of stars that make pictures in the sky.

People created them!

- That's right, Sydney.

- Really?

Just Earth people-- I mean, people like us?

That live on Earth?

- Yup.

Constellations are just like a connect-the-dots game!

- I love playing that game!

- Does anyone really use constellations for anything?

I mean, they're just pictures, right?

- Sure!

Today, astronomers use the constellations to describe where something is in the sky.

- Oh!

I know this from my Commander Cressida Adventures comic book.

Look, it has all kinds of constellation connect-the-dots.

- Thank you, Sydney!

I look forward to reading this.

- Come on, guys, let's go home and find some constellations.

- And then find my Sunspot Star!

all: Thanks, Dr. Rafferty!

- [chuckles] You're welcome.

- Thanks, Dr. Rafferty!

- You know it's okay to call me "Mom," right?

- Yeah, I know.

I'm just proud that you're also a scientist.

Maybe I can call you "Dr.

Mom."

- Oh!

[soft music] Oh, Mindy!

Here's a little something to help you connect the dots, or stars, and make your own constellations.

You can lay these out in any patterns you'd like.

- Wow!

Glow-in-the-dark stars?

Thanks, Dr. Rafferty!

♪ ♪ - Huh.

Even with the chart and our imaginations, it's kind of hard to be sure that we're finding the one star we're looking for.

What was the name of that star Mindy saw?

- Regulus?

- Oh, oh!

I can sing some of the star names.

[guitar strums] - That's okay.

I'm pretty sure Sean's right.

It was Regulus.

♪ ♪ - Is that Regulus?

- Or is it that one?

- Would it help if I sang the star song now?

[clears throat] Sunspot?

[guitar strums] - Um, actually-- - Let's sing some of it anyway!

[upbeat music] ♪ I've been to Venus, to Neptune, and Mars ♪ ♪ But the night sky there can hardly compare ♪ ♪ To the fabulous view from this planet of ours ♪ ♪ On this night of a bazillion ♪ ♪ Way more than a million ♪ ♪ Night of a bazillion stars ♪ There's Algol!

Vega!

Merope!

Pleione!

Regulus!

Sulafat!

Zosma!

Sirma!

Zubenelgenubi!

- Zubenel--what?

- No, really.

It's right over there.

all: ♪ On this night of a bazillion ♪ ♪ Stars ♪ - Thanks, Jet.

Thanks.

- Yeah.

Yeah.

- Well done, Jet.

- [groans] So do any of these airtight containers here come with matching lids?

- [chuckles] They all do!

And look, a special compartment just for cherry tomatoes, huh?

- Oh!

You don't say.

Just incredible.

What will they think of next?

- Hmm.

- Dr.

Mom, we have a question.

- Sure thing, kids.

Yeah, what is it?

Oh, oh, wait, you said Mom.

Ho!

That's you, Dr. Rafferty.

- It's about the stars again.

We were looking at them from the tree house.

- Hmm.

Maybe we'd better come with you.

- I'll come too!

I guess these storage containers can keep--eh?

Get it?

See what I did there?

- [forced laughter] Yeah, I--I saw.

♪ ♪ - I'm still trying... to find a special star for Sunspot.

- Hmm.

You know what?

There's a constellation called Canis Major.

It's got a very bright star called the Dog Star in it.

- No way!

A "dog star"?

You can't be serious.

- [chuckles] Actually, it is Sirius.

- I get that it's serious, but I wonder what the star is called.

- It's Sirius.

- What's serious?

I just want to know what the Dog Star's name is.

- It's seriously called Sirius.

- Whoa!

Slow down... - Jet, Commander Cressida's dog is named Sirius.

'Cause it's the name of the Dog Star!

- That's right, Sydney, and the Dog Star is part of the constellation Canis Major, or the Big Dog.

- Oh, I get it now!

- [barking] - Good boy, Sunspot.

- You know what?

There's a game we can play with connecting the star dots.

- Wow.

Can you show us?

- Sure.

With this app, if you want to see which constellation you're looking at, you can just hold it up like this, and it will connect the dots for you.

See?

- Wow!

♪ ♪ I see Leo!

- Oh!

I see Leo Minor-- and it looks almost real!

[roars] ♪ ♪ - I see something scooping and pouring.

- That's the Big Dipper!

It's part of the constellation Ursa Major, the Bear.

- Wow.

I found more than I thought.

- This is better than the movies.

Let's find some more constellations.

- Where do you want to look next?

♪ ♪ You've found a lot of stars tonight, Mindy.

- But I didn't find just one I could name for Sunspot.

Sorry, Sunspot.

- [chirping] - That's okay, Mindy.

You can keep looking.

And we'll help you!

- Yeah, maybe you'll find a whole constellation one day!

- Hmm.

You just gave me a good idea.

[xylophone music] ♪ ♪ Good night, Sunspot Star.

I mean, good night, Sunspot Constellation.

♪ ♪ - [purrs] - ♪ Jet propulsion ♪ [together] Ready!

Jet!

Go!

- Jet propulsion!

- Jet propulsion!

- Jet propulsion!

[together] Ready!

Jet!

Go!