User blog comment:YellowMonica/Changes in Rewards for Events/@comment-32671851-20180509075952/@comment-25490016-20180515142314

That event has its own page
 * http://candycrush.wikia.com/wiki/Sweets_in_Space
 * http://candycrush.wikia.com/wiki/Space_Contest

Anyway I think what you need to collect is dependent on what planet you are on, like this (but not sure):


 * Gummy Planet=green candies, top 15 receives prizes


 * Choco Planet=red candies, only top 12 receives prizes


 * Pudding Planet=striped candies, only top 10 receives prizes


 * Salty Planet=wrapped candies, only top 5 receives prizes (stuck here actually, did not reach the top 5)


 * Popsicle Planet=color bomb, not here yet but according to your pic it says only top 1 receives prizes