The first thing....

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(str (apply str (repeatedly (+ 2 (rand-int 8)) #(char (+ 97 (rand-int 26))))) " " (apply str (repeatedly (+ 2 (rand-int 8)) #(char (+ 97 (rand-int 26))))))

Not the most efficient way to do it, but meh.
 
How to make the sun look in the same place always...hmm. You didn't say anything about the sky so take this:
-shrink the Sun
-turn the Earth inside-out
-put the Sun inside the now hollow Earth.
Boom.