The moon symbolizes many repeating elements in this play. They speak a lot about when the moon is out, time goes by quicker and it's the best time to go over your thoughts. Many characters have to make big decisions before the new moon.
This piece is a-symmetrical. But if the galaxy was positioned more centered it would be almost symmetrical; nonetheless, there is nice balance between left and right. The galaxy also feels enormous because of the silhouette of the man in the foreground.