To Trenton and Parker

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I'm Ali

I'm Andy

Can you guess where we are going on a trip today?

That's right! Outer space!

We are dressed like astronauts!

An astronauts job is to explore our solar system.

Come on a trip with us while we learn about the planets

in our solar system just like astronauts!

All aboard the rocket ship!

Let's count down...
10 9 8 7 6 5 4 3 2 1

Blast off!

We fly up high until we leave
Earth's atmosphere.

The atmosphere is a layer of gases
that surround the Earth.

The atmosphere protects us from
harmful radiation from the sun.

Our solar system is made up of the sun, nine planets, and
their moons.

Our solar system is part of the spiral galaxy
known as the Milky Way.

First we will fly to the sun! We will have to pass two
planets: Mercury and Venus. We will explore them later!

The sun is a star found in the
center of our solar system. It is a
big ball of burning gases.

The temperature of the sun's
surface is around 10 million
degrees fahrenheit. That is hot!
The hottest it's ever been on the
surface of the Earth is only 134
degrees fahrenheit.

The distance between the Earth and the
Sun is almost 93 million miles!

Compared to Earth, the sun is huge!
It would take 1.3 million Earth's to
fill up the sun!

Now let's fly to Mercury!
The planet closest to
the sun.

Mercury is the smallest planet
and closest to the sun.

Mercury turns very slow.
On Earth it takes 24 hours to go
from day to night, but on Mercury
it takes about 59 days!

Mercury has no moons.

Mercury has no atmosphere to protect
it from the sun. It's surface is very dry
and covered in craters.

The sunny side of Mercury gets as hot as 750 degrees
fahrenheit. The dark side of mercury gets as cold as
-328 degrees fahrenheit.

Now let's fly to Venus!
The planet in between Mercury
and Earth!

Venus is the brightest planet in the
solar system.

Venus has no moons.

Planet Venus is closest to the Earth
and is just a little bit smaller than
Earth. The diameter of Earth is
7,928 miles and Venus is 7,520 miles.

Venus is 67 million miles
from the sun.

Venus is the hottest planet in the
solar system, even though Mercury is
closest to the sun. The surface of Venus
is about 860 degrees fahrenheit.

The next planet is our home planet Earth. It is in
between Venus and Mars. Let's learn some more about
our home!

The Earth is 93 million miles
from the sun.

Planet Earth has one moon.
It's name is Luna.

The Earth's diameter (the distance around
the middle of the Earth) is 7,928 miles.

It takes 365 1/2 days for the Earth
to orbit the sun.

About 71% of the Earth's
surface is water.

Now let's fly to Mars!
The planet in between Earth
and Jupiter.

Mars is almost 142 million miles
from the sun.

Mars is often called "The Red Planet",
because of a red-tinted mineral called iron
oxide on its surface.

It takes 1 year and 320 days for Mars to
orbit the sun, but only 24 hours and 39
minutes to go from day to night.

Mars has seasons like Earth, but it has no
atmosphere to store heat from the sun, so in
the summer it only gets to 23 degrees fahrenheit.

Mars has two moons: Phobus
and Deimos.

The next planet is Jupiter.
To get to Jupiter we have to first
fly through the Asteroid Belt!

Most of the asteroids in our solar system are located in the
Asteroid Belt between Mars and Jupiter. Asteroids are different sizes
and made of rock and metal.

Help us get from
Mars to Jupiter!

Use your finger to trace the path through the asteroids.

Jupiter is about 483 million miles
from the sun.

Jupiter is the largest planet. It's
diameter is 88,700 million miles.

It takes 11.9 years for Jupiter to
orbit the sun.

Jupiter spins much faster than Earth.
It only takes about 9 hours to make a
complete turn on its axis.

We made it!

The fast spinning creates lots of strong
weather. Jupiter is the stormiest planet.
Jupiter has a permanent whirlpool of
storms called "The Great Red Spot."