Rama II - Arthur C. Clarke

Decades have passed since Commander Norton and his crew met with the enormous alien ship dubbed Rama and declared it an intelligent robot with no interest in the creatures of our solar system. But now another ship has been sighted near Earth, and this time, humanity will discover startling--perhaps deadly--differences.
"This is a space trip that no reader will want to miss."--Playboy

Years ago, the enormous, enigmatic alien spacecraft called Rama sailed through our solar system as mind-boggling proof that life existed--or had existed--elsewhere in the universe. Now, at the dawn of the twenty-third century, another ship is discovered hurtling toward us.

A crew of Earth's best and brightest minds is assembled to rendezvous with the massive vessel. They are armed with everything we know about Raman technology and culture. But nothing can prepare them for what they are about to encounter on board Rama II cosmic secrets that are startling, sensational--and perhaps even deadly.

"Offers one surprise after another."--The New York Times

"A masterpiece . . . one of the year's best hard SF epics."--The Houston Post