Reborn Before the Apocalypse: My Backing is the Nation

Chapter 188 Earth Fireworks (Seeking monthly votes!!!)
Jiang Yang knew that even if the black hole jet wasn't targeting the moon, but rather a gas giant like Saturn or Jupiter, whose mass and volume are hundreds of times that of Earth, it could still be torn apart.

Jupiter's gravitational binding energy is approximately 2*10^36 joules. That is, if this much energy were poured into Jupiter, it would be enough to separate every single molecule of matter that makes up Jupiter and completely shatter it.

During the process of Earth being swallowed by a black hole, the radiation energy from the black hole's accretion disk and jets can be roughly considered to be energy converted from Earth's matter, following the equation E=MC^2.

Simple calculations show that converting all of Earth's mass into energy would yield approximately 5.37 x 10^41 joules, roughly 26 times the gravitational binding energy of Jupiter!
Of the energy radiated from the accretion of Earth by a black hole, most of it is ejected through jets. Therefore, if the energy carried by these jets were only one 26th of the energy converted from Earth's mass, it would be enough to tear Jupiter apart, let alone the tiny Moon.

After a simple mental calculation, Jiang Yang arrived at the conclusion.

Even from a distance of 33 light-years, or about 320 trillion kilometers, directly in the direction of the black hole's jet, the brightness of the jet would be comparable to the brightness of the moon at its brightest when viewed from Earth.

Jiang Yang was filled with complicated thoughts.

what is this?
Did Earth, fueled by itself, unleash a spectacular display of fireworks comparable to those of the Milky Way through the transformation of this black hole?

It is indeed spectacular, but...

Horse riding!
He finally understood why astronomers had previously observed that "bright star" continuously approaching the moon.

This isn't a bright star approaching Earth; it's clearly the moon being constantly pulled towards it by the immense gravity of that black hole!

The reason why that black hole is so bright, appearing before people like a bright star, is quite simple.

Black holes themselves do not emit light; in fact, even light passing by is attracted to them.

It is absolutely impossible for humans to see a black hole with the naked eye.

The reason it's so bright right now is actually because of the accretion disk around it, formed after the Earth was torn apart.

And now, its devouring of the Earth is clearly in its final stages.

Most of Earth's mass has been swallowed up or converted into energy and radiated out through the accretion disk and jets.

The bright star we see right now is merely the brightness of the remaining debris from Earth.

Through more than a decade of uninterrupted study, Jiang Yang understood everything the moment he saw the Einstein ring.

The truth has finally come to light.

At this moment, Jiang Yang felt a strong sense of powerlessness.

The mass of this black hole does not appear to be very large.

Otherwise, the moon wouldn't have been pulled away so slowly, the impact on sunlight and the shape of the sun wouldn't have been so small, the process of tearing the earth apart wouldn't have been so "gentle," and it wouldn't have even allowed my past selves to have tens of seconds of observation time after the apocalypse.

Based on comprehensive estimates and simple calculations, Jiang Yang ultimately concluded that the mass of this black hole is at most 2 to 10 times that of Earth, far less than that of Jupiter and Saturn, let alone the Sun.

The mass of the sun is a full 33 times that of the earth!
but……

Compared to the previous life's theory that the Earth's doomsday was caused by the sun, in this life, although the mass of the "real culprit" has shrunk by tens of thousands of times, the problem is even more intractable.

If we compare humans to ants, then the sun is probably a Mount Tai.

Although, from an overall perspective, no matter how hard human civilization tries, it is impossible to affect Mount Tai.

But surely it's possible to move some small stones off Mount Tai by pooling the resources of the entire civilization?
At this moment, the real culprit facing human civilization, though tens of thousands of times smaller in size and mass than Mount Tai, has transformed from soft cotton into a hard, solid alloy block.

How can ants destroy a hard metal block that is placed there?
Let alone destroy it, you can't even leave the slightest mark on it! At least with Jiang Yang's level of knowledge, he couldn't think of any way to prevent the Earth from being swallowed by the black hole.

So……

Let's leave this question to scientists in the next life. My mission in this life is to gather as much information as possible about this black hole...

Although they had no observation tools at hand, as long as Jiang Yang was alive and could see with his naked eye, they could obtain a great deal of information.

Any seemingly ordinary scene, when handed over to experts for detailed analysis, can yield information far beyond what one might imagine.

Just as lunar soil is nothing more than a slightly strange dust to ordinary people, it can be analyzed by experts to produce enough data to form hundreds of high-quality papers.

Putting aside all resentment, anger, and fear, Jiang Yang calmed himself and focused his attention once again on the bright star.

It's getting closer and closer, and brighter and brighter.

Jiang Yang knew that the speed at which the moon, including himself who was orbiting the moon, was being pulled toward the black hole was increasing.

At this moment, both I and the moon are freefalling into that black hole.

During free fall, the acceleration is equal to the gravitational acceleration of the celestial body at that location.

The gravitational acceleration near Earth is approximately 9.8 meters per second squared, meaning that every second, the speed at which something falls toward Earth increases by 9.8 meters.

However, for ordinary celestial bodies, there is an upper limit to their final velocity, which will not exceed the escape velocity of the celestial body.

The highest speed that Earth can provide for other objects is 11.2 kilometers per second.

However, the escape velocity at the surface of a black hole is equal to the speed of light.

In other words, both the falling speed of himself and the moon will be accelerated to a speed extremely close to the speed of light, and they will eventually crash into the black hole.

Of course, before that, both he and the moon had been completely torn apart by the enormous tidal forces and were already dead.

At the current rate of calculation, the time is not far off.

The time allotted for observation is extremely limited.

During this high-speed flight of 1.7 kilometers per second, the bright star formed by the accretion disk of a black hole from Earth's debris gradually fell below the horizon.

The universe returned to darkness and silence, as if nothing had changed.

But Jiang Yang knew clearly that everything had changed, and everything was irreversible.

At least that's the case in this lifetime.

He calmed himself and waited quietly for the moment when he flew over the far side of the moon and saw that bright star again.

Just then, out of the corner of his eye, he suddenly saw a dim, white spot of light with a metallic sheen slowly approaching him in the vast and endless depths of the universe.

(On the last day of October, I'll pay back two more chapters, bringing the total to five chapters and 10,000 words. Please vote with my monthly tickets!!!!!!!!!)

(End of this chapter)