Say “Hello” to Earth, your friend
Where it all starts and where it all ends
The beautiful blue marble
Spinning ‘round the Sun
With so much to discover
You’ll never be done

Earth is the only place
Life has yet been seen
Maybe it’s the water and all the green
Pluto is way too cold
And Mercury is hot cooking
But life may be out there
So NASA keeps looking

The temperature on Earth
Seems so ideal
Providing the food
That goes into your every meal
Allowing for life to thrive and grow
On this planet that’s home
To every one you know

Earth is actually made of several layers
But all of us live right on top
Together right here upon this lithosphere
Every home, every tree
Every drop going kerplop

This top crust of lithosphere
Rides on a warmer layer below
All moving by a force called convection
That makes Earth’s beautiful collection
Of mountains and valleys
And earthquakes, uh oh!

The lithosphere is a recycling escalator
With a wrinkled crust on top
While some crust dives down headfirst
New crust appears at a spreading hot spot

They call this process plate tectonics
Because it makes mountains
From things so flat
And, just like erosion
Erasing everything in its path

Then there is our atmosphere
That thing we call “the air”
Made up of nitrogen and oxygen—
What a lovely pair!

Although we breathe both gases in
We only use the oxygen
Then breathe out CO2
That plants themselves breathe in
What a wonderful way to make our air
Recycled to be fresh and new again

See our lovely blue marble
as it appears from the Moon
NASA has been there and back
Six big trips into the deep blue!

Apollo 11, 12, 14, 15, 16, 17
Maybe you're the next astronaut
Wouldn't that be a dream?
Looking at Earth, so fragile it seems