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Forget talking about inches, yards, miles, or
meters when talking about our galaxy. Start
talking about light-years.
A light-year is the measure of the distance light
travels in one year.
In one second, a beam
of light will travel
around the world
seven times!
Are we there yet?
It would take more
than 150 years
driving in a car to
reach the sun.
Star Light, Star Bright
Our galaxy, the Milky Way, has about
100 billion stars.
The universe that we can see has
about 100 billion galaxies, each with
about 100 billion stars.
There’s no place like home!
Earth is the only
known place in the
solar system where
you can live without a
special, sealed
Do you think space is a
friendly environment?
In space, there is no
food, no water, and no
air. It is impossible to
live in space without
specialized food,
space suits, and living
In a galaxy far, far away . . .
One distant galaxy is 10 million
light-years across.
What would happen if you
tried to dive into the sun?
You’d find it is all gas.
There’s no place solid to
The gas is so thick at the
center of the sun that if
you filled a glass with it, it
would weigh 75 pounds.
The temperature at the
center of the sun is 27
million degrees.
Guess how many earths
could fit inside our sun?
More than one million!
True or false:
The closest galaxy to
ours is 2 million
light-years away.
It’s called the Andromeda Galaxy.
Want to see a big
That’s the number of known stars in
the universe. It’s said “ten billion
And yet, God has named each one
(Psalm 147:4).
What would you name a
The Milky Way, the Whirlpool, the
Black Eye, and the Sombrero are all
real names for galaxies!
Did you know there’s a
belt in space?
It’s called the asteroid belt, and it
hangs between Mars and Jupiter,
with lots of asteroids (chunks of ice
and rock).
Which planet has a
canyon as large as the
entire United States?
Hello! Can you hear me?
Since there’s no air in space, sound
can’t travel. It’s totally silent.
Grab your raincoat!
A violent storm
has been raging
on Jupiter for
over 300 years.
The storm is the
size of two
Freeze dried!
When the sun sets
on Mercury, it gets
so cold you would
freeze almost
Which planet could float?
If you could make
a bathtub big
enough, Saturn
would float in it
because it is a
huge gas giant.
Wanna be a track star?
Go to the moon.
If you can jump 3
feet on earth, you
can jump 18 feet on
the moon!
Want to weigh less?
Head to Pluto, where
a 100-pound person
would weigh only 6.7
Can you do the math
to figure out what
you would weigh?
We see just one star
during the day.
Guess which one.
Yep—the sun.
What orbits the earth
and can be seen by 9
out of 10 people?
The International Space
Station (ISS)!
The ISS is being built
piece by piece in space
and is about the size of a
five-bedroom house.
Pass the hot sauce, please!
Astronauts often eat
spicy food in space
because their sense
of smell and taste are
affected after
hanging in the
cosmos for awhile.
How would you like
your pizza to end up on
the ceiling?
Because there is no
gravity in space,
everything floats.
Astronauts have to hold
onto their food or strap
it down with Velcro.
Get ready to exercise!
Two hours of every
astronaut’s day are
devoted to a strenuous
workout because their
muscles and bones
don’t have to work hard
in the weightless
Did you know astronauts
wear special underwear
that has tubes of cooled
water in it?
It keeps their bodies
at a constant
temperature so they
don’t freeze or boil
to death.
Drinking straw, anyone?
There is no “down” in
space, so water can’t
flow down.
That means
astronauts need to
drink through straws.
Is the space shuttle going
to get a speeding ticket?
It circles the earth every hour and a
half, traveling at a speed of over
17,000 miles per hour.
You’ve probably heard of
sleep walking, but how
about sleep floating?
In space, astronauts can sleep in
any position. They use sleeping
bags, which are strapped to the
walls, roof, or floor. This keeps them
from floating around while they
Imagine how it
would feel to
stand on a wall
or ceiling
Astronauts are
able to do so in
the weightless
Salt or pepper, anyone?
Salt and pepper
don’t stay on
food in space
but float around,
so they are used
in liquid form.
Crash! Boom! Bang!
As the International Space Station
circles the earth, it slowly gets
closer and closer. If it didn’t have
small engines to boost it back up
into space, the ISS would crash into
our planet.
Warning: Dust can be
hazardous to your health.
Did you know particles of dust floating in
space could cut an astronaut? That’s one of
the reasons astronauts wear space suits.
The suits also help the astronauts breathe
and keep them from freezing to death (at
250 degrees below zero) or boiling to death
(at 250 degrees above zero).
Strange but True
Water is rubbed on
like lotion when
astronauts take
showers in space.
The Vomit Comet
Astronauts train for missions in a
special plane called the Vomit
It goes up and down like a roller
coaster, causing lots of airsickness.
Watch out!
Even a tiny fleck of paint
traveling through space
can badly damage or
destroy a rocket, space
shuttle, or the
International Space
That’s why there are
emergency backup plans.
A heavy suit!
Did you know a
space suit
weighs as much
as 400 pounds
on earth but
weighs nothing
in space?
Do you have an extra $20
million laying around?
Then you can take a
trip to space, like the
six space tourists
from Russia who have
done so.
Thirsty, anyone?
At the International
Space Station, urine is
actually recycled into
the drinking water.
No room for error!
The space shuttle is really like a
huge glider.
The pilot has to get the landing right.
He can’t fly around and do it again.
Want to grow a little?
Astronauts can be up to 2 inches
taller in space.
The disks in their spine expand
because there is no gravity to push
them together.
That’s thick!
The windows on
the space
shuttle are 2.5
inches thick—
the thickest
windows ever