The huge blade of the "Excalibur" pointed high and silently at the sky.For nearly half a century, the radar pulser, powered by an atomic explosion, remained inactive. Back then, during the days and nights when Rama traveled through the solar system, people designed and built this giant machine with almost fanatical emotions.It was activated for the first time in 2132.People had expected that through it, huge future alien visitors could be discovered in outer space as early as possible, and an alarm would be issued several years in advance to prevent human life from being affected.

The decision to build this device was made even before Rama reached perihelion. Rama is the first alien visitor. After orbiting the sun for a week, he turned around and headed straight for the vast starry sky, leaving only endless mysteries.That meeting with Rama obtained a large amount of information, and scientists have made in-depth research. The scientists announced that Rama, an intelligent robot system, has absolutely no interest in the solar system and its inhabitants.Official reports offer no explanation for the mysteries investigators encountered in Ramari.Experts, however, believe they already understand some of the basic principles of Rama's engineering.In Rama, people found that there are always two other corresponding backup systems in large and small facilities, which seems to mean that these aliens "must make three every time they do something."

Therefore, if this gigantic spaceship is also a "machine", then it is natural to speculate that there are very likely two other Rama spaceships following it. However, there is nothing new about spacecraft coming to the vast, empty interstellar space around our solar system.Year after year, Earth's inhabitants face many more pressing problems, and the story of Rama fades into obscurity as a history of alien invasions.Some people may still vaguely remember it, but it was just a boring, 50,000-meter-long cylinder, and nothing more.Clearly, people have turned their attention to other problems.Only scholars are still persevering in studying this unusual visitor.

In the early 1940s, a severe economic crisis plagued the world, and what followed was that the funds for maintaining the "Excalibur" ran out.And "Excalibur" does not seem to have any scientific discoveries worth mentioning to justify the huge expenses spent on ensuring its safe operation.And so, the giant nuclear-powered pulsar was shut down. After 45 years, it took two years and nine months to get it up and running again.The reactivation of "Excalibur" is mainly due to scientific considerations.In the past 40 years, the data analysis technology of radar observation has made new developments. There is no doubt that this has greatly improved the utilization value of "Excalibur". "Excalibur" began to capture images in the vast space again.But at this time, few expected Rama to come again.

When the strange blip was first spotted on the screen, Excalibur operators thought it was just an Earth ship and did not notify supervisors.However, the blips recurred, and the operator finally became alert and called the Chief Technician.The steward analyzed the data and determined that it was a comet with a very flat orbit.Two months later, a graduate student calculated that the object was at least 40,000 meters long and had a shiny and smooth shell. This object that is galloping towards the planets in the solar system is "Rama 2"!The news immediately spread all over the world.

This year is 2197 AD.The International Space Agency immediately decided to concentrate all its forces and prepare for an organized survey in late February 2200 when the "Rama 2" entered the orbit of Venus. The people on earth once again turned their attention to the mysterious stars and the boundless space.Those deep thoughts caused by Rama's appearance for the first time quietly returned to people's hearts. The new visitor drew closer, and scientists carefully determined its physical characteristics through detectors.At least from the outside, it and the "Rama 1" are identical twin brothers.

Rama is at it again!Human beings will meet the "Goddess of Destiny" again.