Scifi? (not SyFy)

I recently got back into reading, there is a bit of a lull in my gaming as of now, and I am finding some cool books out there.  Unfortunately I have this habit of starting like 5 books at a time and then finishing them about 3 months later (or not at all).  But in this case they are library books so I guess I have to buckle down, or pay the (literal) price.