Rama series

Astronomers discover a huge, celestial object hurtling through space and after a space probe confirms that is not a natural object, send a space team to investigate.

The Garden of Rama picks up the story of three astronauts trapped in the labyrinthine alien spaceship bound for deep space at the end of the previous book in the series, Rama II. The three trapped humans must use all their wits and resources to survive aboard the ship. There are other alien species aboard-some hostile, and some benevolent. But the three astronauts face the greatest danger from other humans-after a group of violent convicts is brought...