We've journeyed many weeks through darkest space
And now this moon, Callisto, we have found;
Of ice ‘tis made, to Jupiter well bound,
The hammer of that god, his mighty mace.
So now at last we land upon its face,
First men to touch this cold and icy ground,
Its surface, frost and snow, lies all around
Each step we take is frozen in its place.

    Towards the heavens then all eyes are drawn:
Vast Jupiter lies overhead, on high,
Forever looming ponderous, with scorn
It seems to fill the air, we watch it fly.
From east to west, all space it does adorn,
And fills all sight with mountains in the sky.   

                                      1976