I understand that things get published by serendipitously meeting up with an editor or agent who loves the idea. To do increase the chance of serendipity I'm planning on attending science-fiction conventions next summer. I'm going to enter my models in the convention art shows and also polish up my elevator speech (a synopsis of book idea in one sentence). My models so far have been great conversation starters for pitching my book. Have you considered modeling things from your story? I make my models small enough to fit easily in the hand. This tempts people to play with them and get involved with them tactilely.