The Sparrow by Mary Doria Russell

Book – An undeniably alien communication is received on Earth. While governments bicker and argue about what to do next, the Jesuits quietly fund their own miniature space program, designed to send one small group of scientists and missionaries to the signal’s source, to see what they can find. It goes…about as well as first contacts with Jesuit missionaries traditionally goes: fine, until it isn’t, and then it’s horrible.

This is the story of Father Emilio Sandoz, priest and scientist, heretic and – perhaps – saint, who went to another world to meet the people there and suffered terribly for his mistakes. The story is told largely in flashback, as Sandoz is interviewed by the Vatican to determine exactly what went wrong with the mission and who is to blame. So even though large portions of the book are really very happy and cheerful, there’s an ominous cloud hanging over the whole as we wait to find out just what went so terribly wrong. It’s also a story about good intentions: how much having them can and can’t make a difference, and how we apportion blame for things we wish had never happened.