Currently I'm in the process of writing my Science fiction novel, the specific genre would be a "Space Opera" (not the musical kind.) and I have only gone two chapters in. I have set out an entire timeline to help with specifics and to keep the references consistent. Not only that but I have produced countless illustrations to help me envision elements, characters, factions and other key features of my little universe whilst going as far as making a "map" to help me accurately reference the territories across my novel. However I cannot think of an adequate introduction to help readers make sense of the universe they are plunging into. I do not wish to overwhelm readers with information and detail that would make them even more lost as they read on, additionally, I don't want to be too obscure so they are confused on what or who is what. With the information I provided, what could you suggest that I do to give a powerful and interesting introduction? I was thinking of using the timeline just leaving out unimportant events or maybe using the illustrations? I will consider any suggestions you throw at me.