Apollo launch (8)
I believe the answer is:
moonshot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">apollo launch</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for moonshot that I've seen before include "Ambitious launch" , "Rocket launch to our nearest neighbour" , "Space flight" , "Launching of a lunar spacecraft" , "Launch of spacecraft to Earth's near neighbour" .)