The Sparrow (The Sparrow, #1)

In 2019, humanity finds proof of extraterrestrial life when a listening post picks up exquisite singing from the planet Rakhat. While the U.N. debates possible contact missions, the Society of Jesus quietly organizes an 8-person expedition of its own. What the Jesuits find is a world so beyond comprehension that it will lead them to question what it means to be human.