I find it difficult to have allegories in a science fiction book, once you consider the fact the the savior came to save the people on earth, and not anywhere else. If you try and add allegories, you have to create another being in control, one who is lord over more than just earth, and I have trouble justifying that.

You don't have to make a new being, God is in control of the whole universe! There are a couple of ways I've seen this handled. The first is what C.S. Lewis did in his space trilogy, where he gave each planet its own Creation, and possibility of a fall. But it turned out that only earth succumbed to the temptation. So, you could have something like that. Also, Stephen Lawhead has written a few sci-fi books, and each of them has God in it without making it a huge deal. Aliens don't have to be the same as us, the martians in Lawhead's Dreamthief know God and either live in harmony with him or are evil. In the Empyrion Saga Lawhead explores redemption in a very real way with one of his characters, and the aliens already know God and that is where the MC actually learns about Him. All that to say, you have options, If you go for straight allegory like Lewis or if you are just trying to put God in your writing (which is a very good idea ).

Thanks! I got frustrated with the book anyway and quit . I'm focusing on a short story at the moment.

Well, good luck on your short story! But don't give up on your other idea, if you set it aside for a while and come back to it later you'll probably see it in a new way and the problems will start to work themselves out. At least that's what happens for me

I'm also reworking my short story into an about 80 page novella, and I'm going to spend a lot of time on that, I want the plot to make sense, (it didn't before) so I'm going to work on that most of today.

It's always good when the plot makes sense, happy writing!

It looks like you may have abandoned this idea, but if you're still working on it, I think there are many good ways it can be handled, several of which have already been mentioned. As Armorbearer said, God is God over the entire universe!

One I'll add (that has been done well in The Lamb Among Stars Trilogy and other novels) is that other planets have been settled by the inhabitants of earth. So if you're dealing with human races, you could always find some creative, unique way that humans have populated space (with their origin being earth).

Hmm...I might have to think about that if I ever write another sci-fi story. I like that idea, of humans inhabiting space, so you wouldn't have to have aliens really.

I would agree that C.S.Lewis did it best in The Space Trilogy, but I haven't read many other sci-fi books.