"What about the engine used, what is it?"

"Interstellar ramjet engine." Like the BT engine, this is the most suitable engine for the Trailblazer spacecraft.

The engine uses a strong magnetic field to form a huge funnel that is capable of collecting hydrogen during interstellar travel to fuel the spacecraft's nuclear fusion reactor.

This eliminates the fuel load and allows the ship to increase its speed dramatically while sailing.

As long as the other aspects of the ship meet the conditions, it can travel at the speed of light at the earliest, even at a tenth of the speed of light in the exploration state.

At this speed, combined with the scanning range of the biomagnetic capture device, it would only take them thirteen hours to get there after they discovered the Dome.

Fortunately, it will be a long time before they pass here.

Nine years at most, which should be enough to be fully prepared.

However, the first trouble in front of Yan An now is still how to determine the existence of this spaceship.

As for how to observe alien spacecraft, two engineers from Blue Dome discovered a unique detection method in September 18.

For spacecraft approaching the speed of light, the detection method is not as complicated as imagined.

According to the inverse Compton effect, energy increases after a collision with a high-energy electron while sailing against a cosmic microwave background.

If the speed of light is calculated at 299792 kilometers per second, then the collision of the spacecraft with particles in interstellar space will produce an energy equivalent of 2,400 kilograms of TNT and release gamma rays.

Therefore, the spacecraft cannot travel at the speed of light or sub-light while achieving invisibility, and will leave a trail in the microwave background radiation, which is a unique mark related to interstellar spaceflight.

Even a ship that travels at a tenth of the speed of light will produce a corresponding mark, faint but present.

This mark can be easily observed with the current state of the art of Dome, covering the entire Milky Way and even the vicinity of the Milky Way.

However, this technology has a flaw, that is, the observation method is not beyond the existing scientific and technological scope of the blue dome, which belongs to the observation of "telescopes", and the "medium" does not exceed the speed of light.

This problem can be seen from the fact that the spacecraft was only discovered a light-year away from the Emerald Dome, and the reason is that they actively released a signal outward.

In this case, even if traces were seen, they were left years ago, not immediately.

If they were to observe in this way, then by the time they confirmed the traces of the spacecraft a light year away, the alien civilization would probably be on the verge of arriving at their doorstep - after all, no one knew where they had been.

Completely unworkable method!

A search of BT's database yielded no solution.

Either it's a device that has been working for several years, or it's a similar technology, and even if it can be proven that the signal source is a spaceship, there is not much time left for them to prepare.

Just when Yan An felt at a loss for this.

There was a knock on the door.

Gao Shenghan couldn't wait for his consent to push the door open, but fortunately, the screen was facing away from him, leaving BT enough time to cover up the content.

His face was excited, and his eyes contained complex emotions, just like when he suddenly learned that Yan An had come up with the factor factorization algorithm.

"We have just received a report from the southern garrison of the First High Mountain, where there is a suspected large unidentified flying object falling and hitting the First High Mountain, causing an avalanche, and we have lost contact with the garrison of two companies."

When the weather is good, the probability of an avalanche in the first mountain is very low, so the garrison camped in a relatively safe place in order to patrol, but this avalanche affected a large area, cutting off their contact with the outside world, and their fate is still uncertain.

"Unidentified flying objects?"

After already knowing that the spacecraft a light year away was an alien magnetar civilization, Yan An began to become sensitive to unidentified flying objects.

His instincts told him that if it was an accident, Gao Shenghan would never be so out of shape.

"What kind of flying object? Has anyone observed what? Is there any image preserved? Yan An was still calm, and immediately asked the most important question.

There are so many flying objects on this planet that anything can be considered a flying object without in-depth investigation and solid evidence.

For example, the troops stationed on the border of the major countries have repeatedly reported the discovery of unidentified flying objects, with a frequency as high as 329 times. In this regard, they believed that the unmanned reconnaissance plane deployed by Zhu Chi was violating their airspace, and they protested to Zhu Chi on many occasions.

Later, after half a year of verification, it was finally discovered that the so-called UFOs were actually Jupiter and Venus.

Although it was an incident seven or eight years ago, it also fully shows that with the rich imagination, anything can become an unidentified flying object.

Even if it is a meteorite, it is very likely that it will look like a spaceship shining with silver light under the blessing of the moonlight.

"One resembles ...... A coffin-like flying object is by no means a drone or a new type of reconnaissance aircraft.

Our fighter will never lie, he saw it with his own eyes while he was standing guard, and the surveillance of the garrison base also captured the relevant footage. ”

Gao Shenghan paused before finding a more appropriate adjective.

There was an unknown signal in front and an unidentified flying object in the back, and the incident was immediately linked by highly sensitive insiders, and before they could express their position, the news spread inside.

"Show me the video."

Yan An took a deep breath and said, if it weren't for the drone, he could only think of the shape of the coffin as an escape pod.

But whether it is in Zhu Chi or in Mingxing, the shape of the coffin with a square and narrow space is not popular, and the aircraft will not be made like this, and even the escape pod will not consider this style.

No, not all of them won't, if it's an emergency one-person ultra-small escape pod, this shape is still very likely.

survived, that's called an escape pod.

If you don't survive, it's called a coffin, and it can be useful no matter what, so that the user won't be left in the starry sky.

Gao Shenghan handed him his mobile phone, this video was sent to him by the Second Department of the General Staff, the Fifth or Sixth Institute is just a research unit and does not have the right to know at the first time, but the Second Department of the General Staff has it.

The image above is a little dim, but the object wrapped in flames can still be clearly seen across the sky from above.

According to the automatic processing program equipped with the camera equipment, the object is about two meters long and one meter five wide, which is very small, and it is not an exaggeration to say that it is a bed board.

After the object fell, there was no sound in the image, but the image shook violently.

"What's the situation now? Was anyone sent to search for the UFO, and did any precautions be taken to protect against infection? ”

Although it is not certain that it is an escape pod ejected from the ship, it is certain that most of these things carry radiation.

Even if there is no radiation, there are other unknown factors, such as viruses, bacteria, etc.

"Not yet, we need to wait until the avalanche is over before we can investigate. Do you think this is the spaceship of an extraterrestrial civilization? Is it possible that this is the weapon they dropped to exterminate humanity? ”

Blue Dome Star still has a certain understanding of the cruel competition between civilizations, and the law of the dark forest is deeply rooted in the hearts of the people, and they can think of the possibility of being exterminated after contact at the first time, which can only be said that they are quite self-aware in this regard.

However, Gao Shenghan's question made Yan An hesitate for a while, could this be a weapon?

The development of science and technology is inseparable from the needs of civilization, and the embodiment of force is nothing more than the replacement of sticks with firearms, and then from firearms to weapons with higher technological content.

To put it bluntly, the caliber is larger, the lethality is stronger, and the destructive power is more amazing, and its ultimate evolution is to serve destruction.

Extinct humanity by throwing a coffin box down? It would be better to pull the warship in for a salvo.

Compared with those mysterious and mysterious science fiction war methods, it is obviously faster and easier to use cannons to give the entire Blue Dome Star Pear again.

It also satisfies the current needs of the Magnetos - war will always cause destruction anyway, and it is better to have a new Magneto than an indigenous Turquoise.

It's always easier to rebuild on a living planet.