Rendezvous with Rama
Rendezvous with Rama is a hard science fiction novel by Arthur C. Clarke first published in 1973. Set in the 2130s, the story involves a 50-kilometre (31 mi) cylindrical alien starship that enters Earth's solar system. The story is told from the point of view of a group of human explorers who intercept the ship in an attempt to unlock its mysteries. This novel won both the Hugo and Nebula awards upon its release, and is regarded as one of the cornerstones in Clarke's bibliography.
Plot summary
After a meteorite falls in Northeast Italy in 2077, creating a major disaster, the government of Earth sets up the Spaceguard system as an early warning of arrivals from deep space.
The "Rama" of the title is an alien starship, initially mistaken for an asteroid categorised as "31/439". It is detected by astronomers in the year 2131 while it is still outside the orbit of Jupiter. Its speed (100,000 km/h) and the angle of its trajectory clearly indicate it is not on a long orbit around the sun, but comes from interstellar space. The astronomers' interest is further piqued when they realise the asteroid has an extremely rapid rotation period of 4 minutes and is exceptionally large. It is named Rama after the Hindu god, and an unmanned space probe dubbed Sita is launched from the Mars moon Phobos to intercept and photograph it. The resulting images reveal that Rama is a perfect cylinder, 20 kilometres (12 mi) in diameter and 54 kilometres (34 mi) long, and completely featureless, making this humankind's first encounter with an alien spacecraft.
