[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!

- Wow!

There are so many birds out today!

- Yeah.

Earth birds are amazing.

- Look at that one.

- Whoa, a bird that's blue?

And there's one that's black and white!

Ha, what's next?

A bird that's the same color as a banana?

- Uh, Jet?

Look!

- A banana-colored bird!

Cool!

Earth is so weird and colorful.

And it's so much greener than Bortron 7, with the coolest trees ever!

They're so big and tall and-- Wait.

What's going on there?

What kind of a tree has such straight, even parts growing in it?

- No, Jet, that's not the tree.

- That's the floor of an old tree house.

- Wait, what?

A tree house?

Why would you put a house in a tree?

- Birds build their houses in trees.

- Oh, yeah!

[bird chirping] - And sometimes kids like to make a little building up in a tree, kind of a secret clubhouse.

- Yeah, a place to play with friends.

And if you helped make it, then you could feel really proud.

- Oh, fascinating!

That is so Earth.

Let's make one.

One Earth house tree coming right up!

- Great idea!

We can just fix up that tree house.

I love building things.

- Me too!

- Me three!

[Sunspot whistles] - Sunspot four!

- I don't think it'll be hard to fix that tree house up.

- Really?

'Cause I think it'll take a lot of work.

And some walls.

And a roof.

- Great!

So we can get it done fast, probably before snack time!

Like you Earthies say, easy-peasy.

- Oh, think how great it would be to have our own tree house.

It could be a clubhouse and a science laboratory.

We can have space-themed parties!

And I can draw and write comic books up there!

Whoo-hoo!

- It can be all that?

Wow!

Now I can imagine a really amazing tree house.

- Do you really think we can rebuild it?

- Of course we can, Sean.

There's no "can't" on Bortron 7.

- But I'm not sure.

- And there's no "I'm not sure" on Bortron 7.

- Is there "what happens if" on Bortron 7?

- Hmm, not that I know of.

But there is... excelsior!

- Uh, what does that mean?

- That means "onward and upward" in Latin, one of your ancient Earth languages.

- Oh.

[fanfare plays] [laughs] Well, Sunspot is definitely ready.

Come on up, Sean.

Let's fix up this tree house.

- Um, guys, don't you think we should have a plan?

- I have the perfect plan... that I'm coming up with right now.

[lively music] [banging, clattering, and squeaking noises] ♪ ♪ [whistle blows] ♪ ♪ - Perfect.

We're done!

- Um, one little problem.

We forgot to make a door.

- [laughs] Oh, right.

One Earth door coming right up!

[warbling noise] - I guess we could also use a roof.

- Good idea.

But what kind?

- How about that kind?

That's the roof of the observatory.

- The ob-what-atory?

- An observatory is a special building with a domed roof that can open so the scientists can watch the sky at night.

- And stars and planets.

They can observe outer space.

"Observe" means "look at."

- Observe and watch outer space?

My favorite thing... besides eating, being in outer space, building things, counting backwards, singing, having big ideas, and thumb-wrestling Sunspot.

- I have a big idea.

What if we make our own observatory right here, with a domed roof?

- Bam!

Let's do it!

- Our very own observatory would be a dream come true.

I love looking at the night sky.

- Um, yeah, but about us making our own dome... - You're right!

It is time to make a domed roof for our own observatory.

And you're just the one to help me do it.

♪ ♪ all: Yeah!

- I can't believe we built a domed roof all by ourselves.

- All we need is a telescope, and we'll have our own observatory.

- [laughs] Telescope?

What a funny Earth word.

[laughs] Wait, what's a telescope?

- A telescope is a device that lets you see things that are really far away as if they were right in front of your face.

- We totally need one of those.

- Hey, should we make our own?

- Whoo-hoo!

Wait, wait.

Make our own telescope?

But we'd need all kinds of things that we don't have.

Cardboard tubes, some kind of glass lenses... - Easy!

I've got piles of that stuff in my garage.

- But-- - Yup, lenses too.

Hmm.

Let's see here.

Oh, okay.

Um, tubes, yup.

Tape and, uh... ha-ha, Bortronian lenses!

There.

I think that's all we need for our telescope.

So let's get started!

- I think we need a plan.

We should use the scientific method, guys.

- We could also use the Jet method.

[upbeat music and wacky construction noises] ♪ ♪ Ta-da!

Here it is, our telescope, with some things added to make it even better.

- Wow, amazing.

Let's take a look.

Uh, problem, Jet.

I see my own eye, and I smell something... really good.

- This telescope can also make yummy, doughy things shaped like small Earth rocks.

[ding!]

- Mmm.

- Mmm.

- Jet, you made a bread machine.

And it makes really yummy rolls.

- But we didn't make a telescope for our observatory.

- Mm-hmm... hot, delicious failure.

You know what this failure makes me want to do?

- Uh, use the scientific method?

- Yup, it makes me want to sing!

both: Sing?

- ♪ If you try and you make a mess ♪ ♪ Who cares if it's not a success?

♪ ♪ Try again, don't give up hope ♪ ♪ Sooner or later, you'll make a telescope ♪ - Um, Jet?

That's a soccer ball.

[crash] - Hmm, what we need is some sort of plan or process or-- - Or method?

- Huh?

Oh, yeah!

Why don't we use the scientific method?

- Yeah!

Wait, what exactly is this scientific method, again?

- [clears throat] all: One!

- ♪ Ask a question ♪ all: ♪ Based on observations ♪ Two!

- ♪ Make a prediction ♪ all: ♪ That's your hypothesis ♪ Three!

- ♪ Experiment ♪ all: ♪ Test your hypothesis!

♪ Four!

- ♪ Observe what happens ♪ all: ♪ And gather information ♪ Five!

- ♪ Draw conclusions ♪ all: ♪ About what you discovered ♪ Six!

- ♪ Share your findings ♪ all: ♪ Get the word to others ♪ ♪ The scientific method ♪ ♪ It's the scientific method ♪ ♪ Yeah!

♪ ♪ ♪ - We did it!

We built our own telescope.

- Using the scientific method.

- Our hypothesis was right.

- Here's some results to share: this is awesome.

We'll be able to see so many stars and planets!

Let's go try it out!

- Hey, guys, look what Sunspot gave me.

And these rolls are really yummy.

- Thanks, Mindy.

They were one of our failures.

- Mmm!

Yummy, yummy failure.

Hey, I heard you're building a tree house.

- Yeah, we did.

It's got a domed roof.

- My mom says if I stay with you guys, I can see the tree house too.

Ooh, and you have a telescope?

- Yeah, it's for our tree house observatory.

- Observa-what?

- Come on.

We'll show you.

- Sunspot!

Come on!

- We finished right on time.

Look!

- Stars, stars everywhere.

- There must be a million or even a hundred!

- And they look better when we look at them through our telescope.

- In our own tree house observatory we built.

- And we did it in one Earth day.

Boy, I love trying and failing and trying even more.

all: Excelsior!

- Hmm?

- It means "onwards and upwards."

- Oh.

- Okay, who wants to look at Venus?

First I'll find it.

[screams] A huge, yellow Earth monster!

- What?

Let me see.

[both laugh] Jet, silly, that's not a monster.

That's just a yellow bird.

- It's called a yellow warbler.

- I was going to say that.

- Wow, Earth-- almost as fascinating as outer space.

Okay, ladies, gentlemen, and Bortronian pets, I give you... [imitates drumroll] Venus!

[sighs happily] Is there anything better than the night sky?

- Nope, there really isn't.

- Hi, I'm astronomer Amy Mainzer.

[together] Ready!

Jet!

Go!

[upbeat music] ♪ ♪ - Jet Propulsion!

- Jet Propulsion!

- Jet Propulsion!

[together] Ready!

Jet!

Go!