Translucent Craft that makes No Sound While Moving

My mother and I were going to church to practice music for an up coming concert.  We arrived before the others and did not have a key to get in the church, so we waited outside.  It was a very nice fall night, a full moon, but covered with clouds.  The clouds were traveling in a southeasterly direction, with the moon behind them the clouds were lit up like a neon sign.  For whatever reason we both looked up at the same time.  There was a translucent object traveling in a southwesterly direction, exactly opposite of the clouds.  All you could see was the outline of the craft.  It looked like a stealth bomber, but 10 times larger and the most remarkable thing of all, it made absolutely no sound what so ever as it passed over.
Source of report indicates that date of the event is approximate.  PD