Nautilus is a novel written by Vonda N. McIntyre. It was first published in 1994.
The long-awaited conclusion to the Starfarers saga, praised by Ursula K. Le Guin as "the most important series in science fiction." The 1989 novel Starfarers introduced readers to the tale of an interstellar expedition from Earth. Now the Starfarer's crew makes contact with a new alien intelligence.