2493 Oumuamua was an Alien Artifact.
In 2017 an extrasolar comet passed through the solar system. It moved at such a high speed that it was bound to come from outside the solar system. Oumuamua, as it was named, was initially regarded as an interstellar asteroid. Later it was re-classified as a comet, because small changes in the trajectory indicated outgassing.
The really amazing thing about it was its shape. Astronomers of that time saw only see a small dot through their telescopes. But the dot was blinking. This led to the conclusion that Oumuamua was rotating fast. From the brightness curve, they be calculated that Oumuamua was at least 5 times as long as it was wide shaped like a cigar of about 250 x 50 meters. The fast rotation led to the conclusion that Oumuamua must be a solid body, for only solid bodies can withstand high centrifugal forces. Unfortunately, this theory could not be verified directly, because Oumuamua was much too fast for a rendezvous mission and there was no probe in the vicinity.
Spectroscopy showed a high metal content. Early on, there were suspicions that Oumuamua might be of artificial origin. When it was at its minimum distance of 33 million kilometers radio receivers would have detected transmissions of a tenth of a watt. But there were no active emissions.
Oumuamua quickly disappeared into the depths of space and fell into oblivion. Each year the distance grew by almost a light hour, for centuries.
In 2493 Oumuamua is almost 400 billion kilometers away. That is two light weeks or 2700 AU, 2700 times as far from the sun as the Earth, far out in the Oort cloud.
In 2493 however, experimental FTL drives can master such a distance. An expedition sets out to visit the old comet. Its vector is well known. Direction and speed have been precisely measured in the 21st century. And if the path has not been disturbed in the last 400 odd years, Oumuamua should be within a spatial volume of three cubic AU or 10 trillion trillion cubic kilometers. The difficulty is not to cover the distance to the comet, but to track it down in the target area.
The comet is not easily detectable, at least not visually. Out there, in the Oort cloud, it gets billions of times less light than the Earth and it is also quite dark. However, radar does the job. The research vessel deploys several strong radar transmitters in the target area and then waits for echoes. After repeating this procedure several times, they detect a signal at the edge of their search area. While the travel time over 2700 AU was only eight days, the search has taken 40 days.
The expedition approaches Oumuamua. Finally, they can really see the object. They must illuminate it with spotlights, because it is a dark thing in the blackness of space. The surface is very smooth. It is not cigar shaped, as was once thought. In fact, it is a cylinder. Oumuamua is clearly of artificial origin. It is a perfect cylinder, 300 meters long and 50 meters in diameter. At first glance it looks like an empty fuel tank. A close examination reveals residue water ice inside. This must have been the source of any outgassing supposed centuries ago. The surface has countless impact craters of micrometeorites and dust particles. A statistical analysis of the crater distribution indicates an age of 150 million years. That makes Oumuamua the oldest product of a technical civilization ever discovered.
The object has some minor bulges and mounts, but – apart from the meteorite craters – no obvious damage. It looks as if Oumuamua had been deliberately released and not blasted off by an accident. 150 million years ago it had been part of a larger structure, a space station, a ship, or a habitat. Oumuamua probably had served as a water tank. After the tank had been emptied, it was disconnected. Then it drifted away and has remained on its own trajectory ever since.
Oumuamua is moving away from the solar system at 26 kilometers per second. However, this is a similar orbit around the galactic center as our sun. The relative speed is small compared to the common speed around the center of the Milky Way at about 225 km/s. For comparison, the Sun itself is 20 km/s faster than the average speed of the stars in its vicinity.
The current relative velocity of Oumuamua with respect to the solar system does not mean that long ago a technical construction was moving at 26 km/s escape velocity. Perhaps it was almost at rest relative to its home system. Perhaps Oumuamua belonged to the inhabitants of an Oort object there. Since then, both Sol and Oumuamua have been travelling roughly two-thirds of a full circle around the galactic center. Time and again either has changed its direction slightly due to gravitational interactions with other stars. The current relative velocity is the consequence of many subtle vector changes. But they are both basically on a similar orbit around the galaxy.
Ultimately, Oumuamua is an ancient piece of junk that happened to pass through the solar system by chance. Astronomers in the 21st century could not but take it for a natural object. Anything else would have been considered science fiction or wishful thinking.
In the 21st century, people did not know how widespread technical civilizations actually are, how long they exist, and how gigantic their operations are compared to planetary societies. Modern technical civilizations have an industrial capacity a million times higher than the Earth of the 20th century. In hundreds of millions of years there were millions of such civilizations. Over time, all of them together have left behind many trillions of trillions of objects like Oumuamua. This is an order of magnitude that almost approaches the number of natural stray objects in the galaxy.
It was just a coincidence that the first interstellar visitor ever detected was a technical relic. Many other that later visited the Sol system were of natural origin.
2495 The Meme Virus Conspiracy.
A nuclear explosion of 200 kilotons destroys Jamaliya, a city of millions in Dravida Nadu, southern India. 800,000 people are killed, three million are injured and 15 million are left homeless. The profile of the explosion suggests an antimatter reaction. The official investigation suspects the cause is an illegal Amat reactor in a suburb near the Tiruvathevan Engineering College. The true circumstances don't come to light until 100 years later.
The antimatter detonation was actually caused by an illegal reactor, but not, as assumed, by a technical error. It was rather deliberately triggered as part of a secret operation on Earth. The explosion was intended to cover up another crime.
The operation "Eryu" (= whispering) was carried out by the Solar Coalition's intelligence agency represented by Dianfu Fuwu (= recapture), the subversion unit of Xinyu Xin Duohui tasked with reclaiming the earth as part of the intelligence agency of Xinyu Xin, a lunar mega sovereignty. Dianfu Fuwu experimented in Jamaliya with a meme virus. For this purpose, a designer virus was released that was to change opinions and beliefs of the infected. Dianfu Fuwu had developed the virus in a lab lunar orbit with the aim of making the planetary population more receptive to expansionist propaganda. The virus crosses the blood-brain barrier and manipulates neural processing by releasing hormones and directly activating neurons. However, the selection of suitable neural areas proved difficult. There were already extensive methods of viral depression therapy available, but the intended targeted manipulation of subconscious ideas was a new quality. Tests during the development showed a success rate of 30% for the installation of a liberal, expansionist thinking with few side effects. This was considered sufficient.
The virus was meant to spread very slowly with any disease symptoms in order to deceive public health control. But Dianfu Fuwu failed to consider the ritual bath in the Ambuli River at the water festival, were a great many viruses got into the water quickly infecting the population of several quarters through the local water supply. At the same time, a side effect emerged that eliminated inhibitions and morals among a small number of the infected. Jamaliya was hit by an inexplicable wave of violence overnight. The infection also seemed to spread much faster than expected in the sterile environment in lunar orbit.
Those in charge at Dianfu Fuwu feared that the health authorities would very quickly discover the cause of the wave of violence and that the earth would react drastically to such a subversive attack of its sovereignty. Therefore, without consulting their political leaders, they ordered a field agent to blow up one of the many illegal Amat reactors in the outskirts of the city. The explosion wipes out southern Jamaliya.
The Jamaliya conspiracy later comes to light through the disclosure of several thousand documents from the "Eryu" operation by an insider at Dianfu Fuwu. It is a testament to the extent of the Solar Coalition's covert operations on Earth during Earth's isolation, a clear violation of official policy and the Quadrupol agreements.