Curiousity and Opportunity

Curiousity and Opportunity went on a voyage.
They explored, learned, separately, staying mutually connected.
Now they have made their goals reached finally, which we call a significant progress of human race in the history of universe.

"Once upon a time there lived two robots,
and they went on a ship to the sky of unknown...
There's no promise of returning home,
but they'd no other chance...

For the long way to the land of adobe terrain,
and the days on the frozen rocks,
the star of war and fury kept hostile with sand storm,
and the one lost its sole friend...
The one waked and waked the friend,
but to find its friend sleep into eternity.

Now the voyage is only for a single one,
and the one crawls on its duty,
and he once stop to think of the friend,
it knows and waits it will meet the one not a long."

They came together when I was young,
and they left one by one on a certain day without telling me,
I tried to wake the one asleep,
but it's nature of the life as it is.