Rama II by Arthur C. Clarke 1991
In the year 2130 a mysterious and apparently abandoned alien spaceship, Rama, entered our solar system.
Now the Ramans return - in an enthralling sequel as brilliantly imagined as its predecessor.
RAMA II is set in 2200, four years after a second approaching ship has been detected.
But this time, Earth is ready ... And now, with the arrival of RAMA II, some of the questions may be answered ...