Age of Cataclysm: I can light up the technology tree

Earth calendar year 3621.

9.16 light years away from the Kepler 452 star system, accompanied by a violent fluctuation of time and space, a huge fleet suddenly appeared in this dark and cold universe.

The secondary curvature technology with 30 times the speed of light shortens the entire journey to less than four months.

The gamma rays emitted by the antimatter engine and the various rays released by the active detection radar make this star field lively again - just like three months ago.

The fleet quietly hovered in the empty universe and sent a tachyon message in the direction of the Kepler 452 star system.

…

"Beep!"

A crisp reminder sounded in Lv Yongchang's office.

In the azure holographic projection, a message flashing with yellow light appeared.

But Lv Yongchang behind the desk did not move at all.

He still leaned quietly on the office chair with his eyes closed, as if he was asleep.

After a short wait, the wake-up program started to work, and Zero's unique electronic synthesized sound sounded from the speaker.

"Professor, professor!"

...

In the technology tree space.

Lv Yongchang "sits" in the air in front of the white technology tree, staring blankly at the mottled background in the distance.

In front of him is a cursor with a brightness of more than 50%.

[Tachyon Radar]

After mastering the curvature technology, a new problem emerges.

After entering the curvature navigation, the starship's ability to observe the outside world is greatly reduced.

The reason is very simple.

The existing observation methods are all developed based on the light-speed universe.

Therefore, when the speed of movement exceeds the speed of light, the previous external observation methods have been largely ineffective.

For example, when a person is in a state of superluminal navigation, the naked eye can only see the starlight in front of him accelerating "coming towards you", while the starlight behind you can no longer catch up with you.

The same is true for starships.

Calculating and processing the information from the front of the starship can well restore the scene of the starship's forward direction.

Processing information from the rear or side...humans currently do not have a good solution.

Therefore, today's planetary warships have a huge flaw after entering superluminal navigation - once they encounter an attack from the rear or the side, the warship will be like a blind man, with no way to evade or counterattack.

In other words, in order to cope with possible wars in the future, the current human fleet urgently needs a radar that can be used in the curvature navigation state.

Since this will not affect the normal navigation of the starship, the Academy of Sciences has lowered the priority of this research at the beginning.

It was not until the completion of the rest of the basic research that the Academy of Sciences put this research on the agenda again.

The tachyon radar in the technology tree system can just meet this need.

Tachyons will change slightly under the influence of gravitational fields and external energy.

Tachyon radar is made based on this characteristic.

However, due to the nature of tachyons, it is a huge difference from the previous active detection radar - it is a passive detection radar.

But this does not affect the detection accuracy and efficiency of the tachyon radar.

Whether it is a planetary-level gravitational field, or a planetary-level battleship's gravitational shield, curvature bubble... these will trigger the reaction of the tachyon radar.

In addition, with the superluminal characteristics of tachyons, within the accuracy range, tachyon radar can even achieve non-delayed passive detection of the surrounding area!

Every advantage has its disadvantages.

While it has the great advantage of superluminal detection, it also has a huge disadvantage - when the accuracy is insufficient, when the detected object is too backward or too small, it will not have much reaction.

For example, a small meteorite.

Its gravitational field is too small to cause the frequency change of tachyons.

Another example is the starships of level 4 civilization and below that have not yet mastered gravity technology.

The mass is relatively small, and it does not have strong enough gravity shield technology and curvature bubble technology, and it cannot induce the reaction of tachyon radar. Even if the detection accuracy is greatly improved, it is easy to treat these starships as asteroids in the universe.

This is also the reason why the sweeper civilization was forced to use a carpet search for the human civilization fleet at that time.

But is there a problem?

No problem.

For today's human civilization, or for higher-level civilizations, how different are level 4 or below starships from asteroids?

"Professor..."

"Professor!"

The faint call interrupted Lv Yongchang's thoughts.

After a little identification, he realized that it was the voice of Zero.

He stopped thinking, glanced at the white technology tree and the mottled background again, and with a move of consciousness, he directly exited the technology tree space.

...

"Professor, professor..."

As consciousness returned, the call in his ear quickly became clear.

Listening to the rigid electronic synthesized sound that never changed and had little ups and downs, Lv Yongchang felt a pain in his teeth.

He suddenly opened his eyes: "Okay, stop howling!"

"Teach..."

The electronic synthesized sound stopped abruptly.

"What happened?" Looking at the message in front of him flashing with an orange-yellow warning light, Lv Yongchang subconsciously frowned and asked.

"The expedition fleet sent a fast message. The fleet has now arrived at the coordinate area and has not yet found the target fleet..."

Lv Yongchang reached out and clicked on the message, quickly glanced at the content, and said in a deep voice: "It's only been less than 4 months, they can't get far."

"Tell the expeditionary fleet to send detectors to conduct a carpet search!"

"Also, if a war breaks out, let Zhao Zijie take charge."

"Received."