I'm new to flash fiction, but from what I've come to understand, it needs to have all the same components as a regular fiction story, from character development to conclusion. My question is, does the conclusion have to be....well...closure? My story is about a man being hunted down for a valuable object he possesses, and the very last line of the story reveals the importance of this object. Basically this object proves extraterrestrial life exists. Can this suffice as an ending? It's open even though it wraps up the entire story nicely.