This morning I finished Omega by Jack McDevitt, the sequel to The Engines of God. McDevitt is one of the best of the current crop of science fiction writers. He would probably be classified as "hard" science fiction but I think it would be more accurate to describe his style as "classic" science fiction, similar to the writings of Asimov, Heinlein or Simak. His work often deals with mysteries that are so old that his characters constantly struggle with very incomplete information and his readers may have to struggle with lack of resolution.

Amazon Link: Omega