I think these are the notes, if someone wanted to make sheet music (I don't know how to notate rhythm:
a d c# d b a
Our new world is so close.
a d c# d b a d d e f# g f#
Mars has treasures we're only just starting to find.
a d c# d b a d d e f# g f# g
Frozen mountains and crimson dust waiting for footprints
a a g f# e
That will not be mine.
e d d e e d d d e
A hundred years to run the first tests
e a g f# d d b a
another to raise the first dome.
a d d e e d d e
The moon, then Mars, then Titan next,
e a g f# d d b a
A life time to touch each new home.
[same as first verse]
And I want it so much.
Close my eyes, I can taste the Mars dust in the air.
In the darkness the space stations shimmer in orbits that
I will not share.
d g a b a f# d g a b a f#
But I'll teach the student who'll manage the fact'ry
d g a b a f# d f# e d e
That tempers the steel that makes colonies strong.
d g a b a f# d g a b a f#
And I'll write the program that runs the computer
d g a b a f# d f# e d e
That charts out the stars where our rockets belong.
e e a a a a d d a g f# e
It will never get easy to wake from my dream
f# g a a a a d d a g f# e
When the future I dream of is so far away.
d g f# g a b d d d
But I am willing to sacrifice
g a b a d d g a b a d
Something I don't have for something I won't have
d f# e d e d d
But somebody will someday.
Yeah, this version works much better.
Note for guitar rather than voice: I think the chorus where you have all Ds, you could be alternating (in between spoken lines) with some other chord that adds more variety.
(fake edit: actually maybe have the main chord for that section be G, alternating with D in between lines?)
This version keeps the melody for sections where it's reasonably predictable, simplifies the melody in a few places, and substitutes a new melody only where I think one is needed. Specifically:
(youtube)
Chords: