In 5 billion years, the sun will destroy the earth, what will humanity do then?

The Sun is a yellow dwarf, and at the rate of nuclear fusion at the core of a star of the mass of the Sun, the lifespan is about 10 billion years, after which the Sun will become a compact white dwarf. But the solar system has been formed for 4.6 billion years, which means that the sun has about 5 billion years to go. How long is 5 billion years?

That is, there have been five mass extinctions on the earth, and the animals that were once on the earth have all gone extinct. The closest we can get is the dinosaurs, which became extinct about 65 million years ago when a huge asteroid hit the Earth.

At present, human beings on the earth can be traced back to Australopithecus australopithecus for three to five million years, and then back to the common ancestor of forest australopithecus and apes, which is only about 15 million years old. It can be said that the history of human development on the earth is a flick of a finger, so what will happen in 5 billion years should not be a question for us to discuss.

Some time ago, part of the plot of Da Liu's "The Wandering Earth" was filmed into a movie of the same name, which attracted widespread attention, and in the background setting, nuclear fusion at the core of the sun suddenly accelerated, and the helium gathered at the core will fuse in a short period of time and become heavier elements such as carbon and oxygen. At this time, a huge amount of energy will be released, and the four rocky planets closest to the sun will instantly vaporize under the impact of huge energy, and the four gas giants that are a little farther away will change their original orbits.

After the helium flash ends, the sun will expand rapidly, entering the era of red giants, if the earth is lucky to survive in the helium flash, then it will face a second catastrophe, the sun enters the red giant and its outer edge will reach the position of the Mars orbit, then the earth may be in the sun's "belly", the sharp high temperature and the impact on the earth's speed are fatal, we know that gravity provides centripetal force, when the orbital speed becomes smaller, then the Earth's orbital radius pulp becomes smaller, This means that the Earth will plunge headlong into the arms of the sun.

If humanity is lucky enough to survive until that time, we will have no choice but to leave the earth, the first way is to find a moon around Saturn or Jupiter, such as Europa, where there is a liquid ocean, and under the thick ice is the liquid ocean; Or go to Titan, the only moon in the solar system with a thick atmosphere, the main component of the atmosphere is nitrogen, the rest is methane, there is a methane lake on the surface of Titan, so there is no need to worry about energy.

The second way is to fly out of the solar system to find a new home, the closest thing to us is Proxima Centauri, which is light-years away, and there is a planet around this star that is in the habitable zone of the parent star, and we can choose to go here to continue human civilization. But light-years away is astronomical for us, and now the farthest away from us, Voyager 1, is 22 billion kilometers away, with an average speed of 17 kilometers per second. Do you know how long it takes to fly light-years at this speed?

It takes about 74470 years. It seems that the spaceship built must at least have a good life support system.

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When the sun destroys the earth, the earth will be wrapped in a hellish sea of fire, and all life on the earth will be destroyed, and human beings will be no exception, disappearing into the universe with the earth.

Answer: In 5 billion years, if the sun destroys the earth, then mankind will also be destroyed and will no longer exist. will evolve into a lower fossil. Human beings can only take good care of the earth, which is their home, and extend the life of the earth.

Humanity will be flooded, and it will rain very hard. Then in the end, it will die, and the earth will be destroyed, and it will be eaten by the black hole along with the sun.

If the sun destroys the earth, all human beings will disappear, and they will disappear like dinosaurs, and they will become fossils like dinosaurs.

Humanity will be destroyed together, after all, humanity is very small. The scientific research results are not particularly powerful, so that human beings cannot resist the terrible phenomena of the universe, they will be extinct together.

When the Sun dies after 5 billion years, will there still be a chance to escape our solar system and look for the next parent star? This question seems a bit unfounded, but in the 21st century, we don't seem to need to worry about anything. However, if our society can continue to develop, then our children and grandchildren, will have to face such problems.

This catastrophe is likely to happen because our understanding of the world is still vague, and it could subvert the system of knowledge that humans have built at any time.

So will we have time to flee before the sun finally dies? The answer is yes.

First, we need to look for planets that can travel to space. Gris 581c is the first terrestrial planet to resemble Earth, and the liquid elements inside it are likely to be liquid. Unfortunately, this planet is very far away from us, a full light year away.

To get to this planet, we need to build a very fast flying machine, estimated at the well-known third cosmic rate, to escape our solar system, with a maximum speed of km s per hour.

Because of this, Parker's speed will reach a high speed of 200 kilometers per second, which is much faster than the previous third space voyage. But even if the Dalgley speed is reduced at this rate, it will take at least 30,000 years for planet 81c. This means that the spacecraft needs a life cycle that can sustain long space travel.

And the most critical issue is energy supply. At present, among the energy technologies developed by mankind, the top integer controllable nuclear fusion, even if it is powerful, is still a small thing in the universe. During the 30,000-year voyage, the energy crisis was almost dead.

So what can we do to solve the energy problem? Of course. For example, in curvature flight, the spacecraft compresses the space in front of it, and in curvature navigation, it can squeeze the space in front of it, and then expand the space behind it, which can achieve the effect of folding distance, and can make the spaceship travel faster than the speed of light.

Or the Daedalus spacecraft program, which intends to use the power of a nuclear bomb** to propel the spacecraft, which can carry a payload of 500 tons and reach 12% of the speed of light to reach a nearby star system in a few decades. This sounds real, but it's also risky.

In any case, space travel does not allow us to cross the Pacific Ocean on a small plank, but we are still striving for it, not for the present, but more importantly for the future.

The sun disappears, and it can be replaced by "Artificial Sun".

With modern nuclear fusion research, it is possible to create an artificial sun. As for this new "Planet", how to launch to "Replace the Sun's Position", the technical difficulties at that time should not be a problem.

Humans think too much, and it won't take 5 billion years for humans to be gone. An object, a species, a person has a process of generation, growth, growth, aging, and extinction. This is the universal iron law of the universe, and it is difficult for any kind of matter to escape.

Live well in the present, and the end will come in the future. Even the universe is eventually moving towards heat death.

5 billion years was the common saying in the past, but in fact, it would be nice to have 1 billion years! Give humanity another hundred years (and probably won't need it), and interstellar navigation will not be a problem! For two hundred years, human beings can completely wander in the universe!

Tens of thousands of years later, he wandered into the arms of a new star.

Who says the sun will disappear in five billion years? The existence of human beings is not accidental, it is the act and arrangement of God, human beings are small and can only dream, there is nothing in the world that is created by man, man is just effective use. When you know that people come from, there will be no such boring problems.