- Wow!

These are beautiful!

- This one is about the time we went to the ice moon, Enceladus.

- Whoa, cool!

- And this is the valentine I made for dear little frozen Pluto.

- Aww.

- And this is a drawing of the cucumber sandwich I ate last week.

I did not want to forget it.

- Huh, you know, when I was a kid, I used to play space travel, too.

- You were a kid?

- Yeah, believe it or not.

I used to pretend my backpack was a jetpack, and I'd use it to discover new planets.

- Kind of like Commander Cressida!

- Come on, Ellen, I want to show you our observation station This is where we look at the stars.

Sean lets us use his telescope.

- Ah, who's Sean?

- [panting] - [whistle blowing] - Hey, who's watching the lemonade stand?

- Don't worry, Carrot's handling it.

[dramatic music] - Whoa.

[fireworks explode] ♪ ♪ Astronaut Ellen Ochoa, you're in our treehouse?

all: Astronaut?

- You've been on the space shuttle.

You're a veteran of four space flights.

You've logged over a thousand hours in space.

You have a degree in electrical engineering!

- I'm impressed you know so much about me, Sean.

- Thanks, studying everything about astronauts is kind of my thing.

- Just ask him about Neil Strongarm.

both: Neil Armstrong.

- [whistle blowing] - What are you doing here in Boxwood Terrace, astronaut Ellen Ochoa?

- Well, I'm here to meet some scientists at the DSA.

- Really?

Our parents work at the DSA.

I wonder if you're meeting with them.

- If you want, we can take you there when it's time for your meeting.

This path goes right there.

- Perfect.

- Um, astronaut Ellen Ochoa, do you have any tips for an aspiring astronaut?

I want to lead the first mission to Mars, but I'm a little bit nervous I won't pass all the tests.

- I wouldn't worry about it, Sean.

You have to be a grownup first before you can take those tests.

- I do?

- You're still a kid.

So you have lots of time.

- Really?

Ah, what a relief.

So I don't have to keep training all the time?

- Nope.

- [exhales] - [whistle blows] - As a kid, it's important to just play and use your imagination.

You use your imaginations to travel the whole solar system.

- It's like astronaut Ellen Ochoa always says, it's important to take time to play.

So let's play!

- Okay, what should we play?

- How about International Space Station?

I want to be Mission Control Mindy again.

- Sounds like fun.

How do you play?

- Well, first we set up the mission control at the bottom of the treehouse.

- The Sean gets into a spacesuit and gets on board the rocket.

- Then we do a countdown, and launch him into space.

- Okay, but this time, how about we all go into space?

all: Yeah!

[dramatic music] - I can't believe it.

We are going into space with astronaut Ellen Ochoa!

♪ ♪