Rendezvous with Rama

It's 2130, and a strange asteroid is discovered approaching Earth. Earth, and the rest of the inhabited planets and satellites, soon discover that this is no asteroid, but a made object, which has travelled for millions of years and is aiming for the sun. They send a ship to the object, named Rama, to explore. The story follows the crew of the ship Endeavor as they enter Rama and try to discover and survive that alien environment.

The story is inspirational and a very good read, I understand why it won the Hugo and the Nebula awards. All I want now is to know more about Rama and the why, what and who of the story. Four out of five stars.