My name is Chris Hadfield.

Leland Melvin.

Jerry Linenger here.

Mae C. Jemison.

Jeffrey Hoffman.

Mike Massimino.

Nicole Stott.

We're here to answer the top 50 Google questions about space.

According to Mondovo.

Here we go. Jeff, ask us some questions.

Can birds fly in space? - No.

Only inside a spacecraft.

Does space ever end?

No.

Can you see the space station from earth? - Yes, sure.

Why was NASA created?

To beat the Russians.

How was space created? - Nobody knows. We don't know.

In the Big Bang.

How much does a space shuttle weigh?

A quater milliion pounds.

That's what the crew on board that just eight.

Can you see stars in space?

Yes.

How fast is the International Space Station moving?

17,500 miles per hour.

What is the temperature in outer space? - Cold.

Well, temperature, actually in space has no meaning because it's a vacuum.

Can you shot a gun in space? - Sure you can. Why not?

What is the Goldilocks Zone?

Not too hot, not too cold. - Just right.

What orbits the Earth?

The moon and satellites.

How many rovers are on Mars?

We'll go with four.

How long does it take to orbit the Earth?

Depends what you're in.

How was Mars named?

By the Romans.

What is a cosmonaut?

A Russian astronaut.

Do you age in space?

Yeah, of course.

What is a space probe?

It's something that goes and looks at other planets.

Does Mars have gravity? - Yes.

Where is Kennedy Space Center? - In Florida.

How fast does a space shuttle go?

17,500 miles per hour.

What is spacetime?

It's a theoretical way to explain the universe.

Can we live on Mars? - Not yet. You'll need life support.

How far away is space? - Infinite. Very far. Everywhere.

Different question.

Why space is black?

There's nothing to reflect the light.

Let me tell you the real answer. Because the age and size of the universe, we can only see light that has had time to reach us so it's black.

Who was the first woman in space? - Valentina Tereshkova.

Where is the asteroid belt? - Between Mars and Jupiter.

When was Mars discovered?

We don't know. - Before recorded history.

What does orbit mean?

It means to go around something.

Can you see the Great Wall of China from space? - No. I did not.

When can you see Mars? At night.

At night, at the right time.

Who was the 1st American in space? - Alan Shepard.

Does Mars have an atmosphere? - Yes.

Who was the first man in space? - Yuri Gagarin.

How long does it take to get to space?

Nine minutes.

Depends on the ship.

Where is the International Space Station? - In space.

Trick answer.

How long is a year on Mars? Two or three years.

How much money do astronauts make? - Not enough.

Is Mars bigger than Earth? - No.

Why is Mars red? - Iron oxide.

How many satellites orbit the Earth?

Well, there's hundreds.

Yeah, there's lots.

Is space a vacuum? - Yes.

What's the temperature on Mars?

50, 60° during the day and a couple of 100 degrees below.

Can you hear sounds in space? - No.

Not in a vacuum.

How to become an astronaut? - We're lucky.

What is an asteroid?

Smaller than a planet.

Number 4. - Is there life on Mars?

We don't know. - There will be once we get there.

Not yet.

How many moons does Mars have? - Two.

What does NASA stand for? - The National Aeronautics and Space Administration.

I'm sorry that so many people have to ask that.

And number one, how long does it take to get to Mars?

Well, it depends.

Six months.

Anywhere from six to nine months. Someday we'll be able to do it a lot faster.

Did you notice how us astronauts did this?

We went 54321.

We've just answered the top 50 questions.

High five. Nice work.