Titan (Gaea Trilogy #1)

When Cirrocco Jones, captain of the spaceship Ringmaster, and his crew are captured by Gaea, a planet-sized creature that orbits around Saturn, they find themselves inside a bizarre world inhabited by centaurs, harpies, and constantly shifting environments.

Hugo Award Nominee for Best Novel (1980), Nebula Award Nominee for Best Novel (1979), Locus Award for Best SF Novel (1980), Ditmar Award Nominee for Best International Long Fiction (1980), Analog Award for Best Serial Novel or Novella (1979)

John Varley: