Fortunately, I'm a Giant of Light

Now around 440:[-] on January [-], [-], after [-] years, the Milky Way shines again and appears on the earth, illuminating the night of Asia in the northern hemisphere with its power beyond imagination.

It's an almost unpredictable thing.

Because the first moment seen by the naked eye is already the moment of its arrival.

Due to the existence of nebula matter in space.Under the interception of the nebula matter, the speed of particle transmission cannot reliably reach the "vacuum light speed", and there will be lags of varying degrees.

So people later realized by checking the past records that about 10 minutes before the beginning of the new year, the neutrino jet had bombarded the early warning system of the lunar observation base.

Because the flight of neutrinos in space is hardly hindered by any matter, but the flight of photons is easily affected.

At that time, the Google Interstellar Thinker, a supercomputer in orbit, was paralyzed to varying degrees.Twenty or so engineers didn't know the situation, and they were suddenly called by the alarm while they were singing and fishing. Together with some repair robots, they began to try to repair the supercomputer.

While being repaired, the screen of this supercomputer displayed the cosmic crisis emergency plan formulated by the Alliance of Nations more than ten years ago (including defense measures for asteroids, supernovas and other possible cosmic crises that may occur in various scientific predictions).It's just that the engineers...no one could get the point.

Then, in just a few ten minutes, the light that came after that had made everything in the world nowhere to hide.

As for the distance from the earth's orbit to the ground, light travels faster than the blink of an eye, and faster than human nerve signals.

For a moment at first, the brightness of the thing was like that of a bright star.

The direction it came from was the super large group of stars on the edge of the Milky Way, close to the direction of the constellation Centaurus in the starry sky.

That location, at the latitude at which the Central Asian Division of the Northern Hemisphere was located at that time, is difficult to see, and is probably very low near the edge of the horizon.

So in fact, many people are mistaken.Because there was not only one bright star in the night sky at that time, but the stars were more brilliant than usual... This is because several planets or smaller satellites in the solar system reflected the light of the supernova and became brighter, and then they were the same as the supernova. The light reaches the earth together, until it reaches people's eyes.

But just wait a little longer, and the supernova hangs across the sky like a full moon, driving away the night from every corner of humanity's last cities.

This... is not the highest point of this supernova's brightness to the earth.

It is much, much closer to Earth than its 440 four-year-old brethren.

"It's still getting brighter."

People predict that the brightness of the stars that do not know how many light-years away will take about a week, and they will be exactly the same as the sun, illuminating the entire earth.

This is not a metaphor.

Zion recognized this fact earlier and more clearly than humans.He looked back at the horizon as if the sun was rising in the crowd.

This is evidence that the Earth's mid-latitudes, which were originally darkened away from the Sun, were directly bombarded by the light of a supernova.

Half the day is bright, but the world is dark.

At that time, the surrounding cities of the Central Asian branch, those people who were on the back of the earth and were illuminated by the supernova did not realize what it was, and only knew to escape underground.

Whether it is a nuclear bomb or a monster, there is nothing wrong with running underground.

Lizi and his party are no exception.

Zion followed them, and soon poured into the subway station in the outer city with the panic flow of people, and hurried down.Based on good drills, no accidental casualties occurred.

Under the tense command after the activation of the TPC emergency plan, they quickly arrived at an underground nuclear shelter.This refuge is connected to the underground city.

Many capable people are actively communicating, relying on relationships to get themselves into the underground city.

And this group of people gathered around the corner of the refuge. Lizi, Aya, Chunli and the others knew that there was a giant of light beside them, so they were not panicked, but there were strange colors on many sides.

Zion stroked his face with his hand, lost in thought.

Akane, who didn't know, ran with everyone in a panic, but was held tightly by Lizi, leaving a lot of scratches on the winter coat.

They did a quick headcount and no one was left behind or injured.

"What is this? What will happen next? Sister Lizi."

After that, Akane asked Lizi timidly.

Lizi was also in a state of confusion at this time, and it was difficult to interpret this question, but there were not many miracles that could illuminate the earth.By simple elimination, that answer can be reached very quickly.

"Maybe...maybe...a...supernova, not far from the sun, erupted a few years or ten years ago..."

She pinched her hair and opened her workbook.

The world was deserted.

People can no longer imagine what the surface looks like, nor their own future.

The noisy broadcasting, and a lot of disputing voices, kept destroying the rational defense of the remaining people.

On the contrary, Aya, leaning against the wall of the narrow refuge, pinched her chin. After learning the answer from Zion, during this period of thinking, some fragments of memory surged in her mind... It was a thing that was... deeply engraved in Mitochondrial Eve's memory.

She asked softly:

"Lizi, do you know about the Ordovician mass extinction?"

This is the first extinction event recorded in Earth's biological history.

It happened 500 million years ago at the end of the Ordovician period and the early Silurian period. At that time, all living things still lived in water, and only a few land plants had begun to sprout.The Ordovician mass extinction wiped out about 80.00% of the five species on the earth in one breath, which gave the newborn earth an unbearable weight for the first time.

The intensity of the Ordovician mass extinction ranked second among previous mass extinctions, but its duration was extremely short...only slightly longer than the sudden Cretaceous mass extinction 500 million years ago.

By comparison, the Devonian mass extinction (the time the fish came ashore) was 200 million years ago.

"The Ordovician mass extinction, I read about it in textbooks, but what's the point here?"

Chun Li recalled those fragments of knowledge in the 12 years of compulsory education that were about to be forgotten.

At some point, the entire shelter fell silent, and many people were listening to these people, so as to get enough information from them.

Chun Li didn't know about Aya's situation.

Lizi knew it, and she immediately understood that Aya recalled some fragments of history:

"Are you talking about the cause of the Ordovician mass extinction? I remember that there are two mainstream theories about the Ordovician mass extinction... one is the chain reaction of the arrival of the ice age."

This is a mainstream conjecture, written in human textbooks.

"It is true that the cold has killed many creatures." Aya said coldly, "But the Ice Age has never been so destructive... and it has never been just a secondary cause."

Anyone who knows the mystery behind Aya will not doubt the authenticity of her guesses and assertions about Earth's history.

Because that's from the mitochondria... a horrible memory of the vast history of the Earth.

"There should be a second guess, right?"

"And the second statement that has been discussed is that..."

Lizi took a deep breath.

For some reason, everyone who is listening feels that the shelter is extraordinarily cold, and the voice on the radio is infinitely far away.

"A supernova about [-] light-years away from the earth... erupted, and its light continued to ravage the earth for a long time. This hypothesis... I remember, can perfectly explain many doubts about the early Ordovician extinction .”

Because the gamma-ray burst of the supernova, if it is directly facing the earth, even if it is six thousand light-years away, it can directly destroy the earth's ozone layer.As a result, the organisms responsible for photosynthesis, shallow water organisms or plankton on the surface will completely disappear in the long river of history under the direct bombardment of cosmic rays.

This speculation is consistent with the observational evidence in geology.

Moreover, excessive ultraviolet radiation can cause DNA damage in organisms, and the distribution of DNA damage fossils currently investigated in geology also conforms to the supernova hypothesis.

This could even explain the later onset of the Ordovician ice ages... this is due to the destruction of the ozone by gamma rays, by combining it with nitrogen to form nitrogen dioxide, which cools the planet.

"But this hypothesis failed to become the mainstream because it has a fatal doubt!" Lizi propped her head up, her lips were bloodless, "That is, we on Earth have not yet found the remnants of a supernova that meets the requirements. !"

Since a supernova once illuminated the sky of the earth, the earth should naturally be able to find the remains of the star that is going to end.

But humans have not found it yet.

So the hypothesis never caught on.And the people who are committed to proving it have not been able to complete its final footnote so far.

It's just that Aya was silent for a while, and then smiled bleakly:

"Do you still remember the matter of the descendant?"

Alien species who have intervened in the earth's nearly [-] million years of plate drift and early biological evolution.

Several people, and those who were eavesdropping, were all stunned.

And Aya lowered her head and said sullenly:

"What if, what if, I guess... some supernova, it's not natural either?"

And its disappearance, of course, will not be natural.

In the distance, the voice of a monster came.

"According to the laws of probability and statistics, in principle... the Milky Way has three supernova explosions every hundred years, which means that everyone has the opportunity to see a star shining in the Milky Way in their lifetime, even in the daytime, Visible to the naked eye."

But in fact, it is not the case.

In other galaxies, humans discover several supernovae every century.Only the Milky Way, after 1604, no longer has the light of the bright Milky Way.There are only a few suspected traces.

In other words, the number of supernova remnants observed on the earth does not always conform to the laws of probability and statistics.

Lizi was at a loss for a moment, only to hear Liuhua hugging her knees and asking softly:

"What do these represent?"

Lizi didn't know how to answer her.

Because she doesn't know what will happen in the future, and the intensity of this supernova, what changes it will cause... I don't know what the fragments of Aya's memory mean, but she just said softly:

"It will be more bitter in the future."

Everyone bowed their heads.

At first, the intensity of the light was not very high.

Therefore, the TPC still has time to schedule transactions.

At that time, after another hour or two, someone shouted that he was connected to the TPC branch through a fixed line, and soon people's attention was also diverted to him.

The Central Asia branch at that time immediately opened several iron doors, explained the escape and transfer routes clearly, and told them to go to the underground city.

People looked at each other and agreed to the task.

As a result, tens of thousands of people on the ground came out of various temporary shelters, which were crowded with people, and followed the subway that originally extended in all directions in the city... from the dark underground tunnel to the underground city. direction trek.

The human world seldom has such a migration, it is in a dark and solidified tunnel.

And this darkness is a good time to do some action.

Zion is going to leave the team first.He thought about sending Aya and Yumemi back to the Retribution, and then acted on his own.Originally, I also wanted to invite Lizi and her party.

But Lizi refused.

"I still have things to do in the world."