Greek sun god (6)
I believe the answer is:
apollo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">greek sun god</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for apollo that I've seen before include "source of name for far-flung missions" , "American space programme for landing men on moon" , "Greek god of the sun (6)" , "US space program" , "Handsome young man of Greek mythology" .)