Just when the era of technology blowout was just beginning, an unexpected thing happened......

This is the Oort Nebula, the outermost part of the solar system.

Astronomers generally agree that the Oort cloud is the remnant of the material that formed the Sun and its planets 5 billion years ago and surrounded the solar system. The Oort Nebula is the birthplace of comets. It is about 50,000 to 100,000 astronomical units from the Sun, which is almost equal to one light-year, which is a quarter of the distance between the Sun and Proxima Centauri.

The Sun's rays were already faint at this distance, not as bright as Sirius, and it was truly an ordinary member of the myriad stars.

The fastest light takes more than a year to travel from the sun to this place. As a result, the comets here take millions of years to orbit the Sun and can only be seen when they travel a distance of several hundred million kilometers from the Sun.

At this moment, a huge spaceship with a diameter of about 150 kilometers is passing by, and if a human scientist were standing in the spaceship, he would be surprised to find that it was moving faster than the speed of light!

Its surface appears to be wrapped in a bubble-like film, and when the light hits the ship, it bends strangely. It's heading towards the solar system at speeds well above the speed of light!

This faster-than-light motion does not violate any known laws of physics, and its best explanation is "curvature navigation".

Curvature navigation, which allows objects to move forward by changing the curvature of space, is essentially the movement of space. Just like a person standing on a carpet, when the carpet is twitched, the person will also follow the "movement". However, the motion of space is more abstract and complex, and the spacecraft wrapped in the moving space is almost stationary and does not violate the relativistic effect, so curvature navigation can theoretically reach any speed, even - beyond the speed of light!

This has always been the fantasy of human space technology, but it has been completely realized in this spaceship. If human scientists see it, it will inevitably trigger a wave of crazy research!

Exceeding the speed of light is the best way for interstellar civilizations to avoid danger, because it can bring a lot of confusion in information.

Observing faster-than-light spacecraft from all angles, the conclusions will be different:

If you look directly behind the faster-than-light spacecraft, you will be surprised to find that it is still moving away at the speed of light. However, there is a severe Doppler effect at this point, where all the signals become more wavelength and lower frequency, which means that the observing spacecraft will be very dim.

If viewed from the side in the direction of motion, depending on the angle, the situation is even more bizarre: the ship is pulled into a strange long shape, and it is getting longer and longer, like a long noodle.

If the speed of the spacecraft is much greater than the speed of light, people will see discrete dots, which will slowly join together to form long noodles.

According to the foremost and final points, this is also the only case where it is possible to "see" faster-than-light motion. However, this phenomenon is very demanding for the observer's perspective.

If the observer stands directly in front of the direction of the spacecraft, people will ...... I can't see any images of the ship! Because it's so fast that it leaves all light behind!

Only a moment later, when the ship passes by, one sees a ship pass in front of them, moving away at the speed of light. At the same time, another image is created that looks backwards, and one can see the ship fly back to square one at the speed of light!

This situation may seem incredible, but it's not a step back in time, it's essentially a parallax illusion created by the speed of light. In all observations, people see not the spacecraft itself, but images formed by light.

Because the speed of the spacecraft exceeds the speed of light, when the spacecraft passes the observer for a while, the most recently emitted photon will reach the human eye, then a little behind, then a little behind, and then a little behind, and the whole continuous image looks as if the spacecraft is going backwards.

All kinds of strange observations make faster-than-light objects a ghostly phenomenon, and all observations based on light are lagging and inaccurate.

Therefore, this kind of information error is the best umbrella for interstellar civilization! Because you have no idea where the faster-than-light ship flies, unless...... There are faster means of observation than light!

The massive spaceship continued to travel a significant distance in the Oort Nebula before emerging from its faster-than-light state and flying at a sub-light speed.

At this time, its true appearance can be vaguely seen, it is a large black elliptical sphere, the surface is pitted, and a large number of electric sparks are produced from time to time...... Even, at the moment of detachment from the speed of light, there was a violent explosion!

Or maybe that's why it flew firmly into the solar system......

This is the solar system, Mars.

Professor Thomson, who was in charge of astronomical observations, suddenly detected an unusual fluctuation.

It was a radio wave with some kind of regularity, very faint, and he frowned and checked, a little doubtful that this wave was emitted by human civilization. Because it's so regular, it doesn't seem like it's coming from the cosmic garbled ......

"Astronomy", as a key support project of the Noah, has also received a lot of resources. Humans even plan to build a radio telescope with a diameter of 1,000 meters on Noah! However, due to the shortage of manpower, it is only a plan for the time being, and it has not yet been implemented.

Of course, small radio telescopes have been around for a long time, brought from the lunar base, and Professor Thomson is the head of this astronomical laboratory.

He pondered this wave carefully, it was not very long, but there were obvious traces of intelligent civilization, six of which were the same, and two repeating bands, which looked like a string of information codes?

Thomson and his student Thomas experimented with various human decoding methods, only to find that they couldn't solve it.

"There's no such coding, weird? Is it a string of garbled characters, and it has been encrypted? Professor Thomson muttered to himself, "This string of gibberish seems to have come from space?"

Suddenly, his student Thomas shouted, "Teacher, again, again!" At the end of the day, Thomas's eyes widened and seemed frozen.

Thomson hurriedly looked at the screen, only to see that the radio telescope had detected a large amount of information codes! This time it wasn't like last time, but densely packed...... Seventy-three pages!

Seventy-three pages!

The two of them were simply stunned, what is this?!

Thomson's fingers tapped quickly on the keyboard, though he couldn't locate the source of the wave. But with the current information, he can be sure that it came from outside Pluto!

Radio waves from outside Pluto, and logically? What does this mean?

The hearts of the two of them beat wildly in an instant, and Thomas said with a pale face: "Are the aliens coming for revenge?" ”

"Don't talk nonsense!" Thomson cursed, and with trembling hands, he typed a short report with a "Extremely Urgent" sign attached to it!

……

The moment Yu Yifeng received the report, his heart suddenly "clicked", and his brain was dizzy. At this moment, he thought of countless bad possibilities, and sweat dripped from his forehead......

What does this signal represent? Is it an alien civilization, or an alien civilization's spaceship?

Yu Yifeng bit his lip tightly before he barely regained his composure. Although the current human beings have developed science and technology for more than half a year, they have not even digested one percent of the alien technology. When human beings encounter a real interstellar civilization, it will inevitably be a situation of being beaten!

Or rather...... With the alien weapons that have been removed, you can barely fight back for a time or two, and then become a lamb to the slaughter with no ability to resist.

"Convene an emergency meeting!" He hurriedly pressed the button in the captain's room. At the same time, he immediately issued several orders.

"Astronomical observation equipment is turned on to the maximum!"

"Turn off all radio, visible light signals and recall all robots! And also...... All cryptographers are invited to be present and be sure to unpack this code! ”

“…… Call Calvin too! ”