The sun is an energy pool for all living things to grow. It not only brings light and warmth to the earth, but also provides sufficient energy for life. So, if the sun suddenly disappears, how long can we live?
Without the sun, the earth would be a cold and dark planet, and all living things could not survive. As the most advanced and intelligent animal on the earth, human beings have invented various advanced technologies to send people from the earth to another planet. Such an advanced technical level has also made some people see hope. When the earth loses the favor of the sun, they can use these technologies to invent something that can provide energy to people like the sun. In addition, people in this area need to solve the water problem, because without the energy of the sun, the earth will be very cold and all water sources will form ice, so if you want to live longer, you must find ways to solve the water problem.
Besides water, electricity is needed. As long as these problems are solved and enough food is saved, this small group of people may be able to live in an ecological circle less than 1 square kilometer, just like the earth is about to fall in World War II Z. In order to isolate the only surviving people from zombies, Israel built a wall up to tens of meters to surround a small town, and the people inside were not infected with zombie virus.
Then, if the sun suddenly disappears, if technology permits, mankind can follow the example of "building a wall to surround people" and provide energy for mankind. People inside can live in the same normal state as before the sun disappears, but how long this state can last depends on the size of this ecological circle and the energy it can provide. If the technology is advanced enough, people in it may be lucky to live a lifetime.
However, "we" is too common. If the sun suddenly disappears at that time, maybe we can dance the last disco and lie down when we are tired.
Because when the earth loses the function of the sun, oxygen will be absorbed. This surplus oxygen may be enough for you to breathe for a year or two, but after a year or two, the temperature of the earth will drop below -70 degrees Celsius. At this temperature, all living things can't survive without the energy of the sun.
According to scientific analysis, it takes about 8 minutes for sunlight to reach the earth. In other words, if the sun disappears, the earth will slowly experience a cooling process after 8 minutes. After about a year, the temperature of the earth will drop to about-100 degrees Celsius, and most living things will no longer exist.
The sun suddenly went out.
No feeling, normal disco dancing.
Eight minutes later,
No matter where you are, day or night, the sky will suddenly darken, inductive street lamps and emergency lighting will light up, and everyone can see the Milky Way all over the sky, and it will be brighter than before.
Unlike the photos of the Milky Way you see, its background is dark blue, and the background at this time is pure black.
The moon is still next to the earth, but you can't see it because there is no reflection from the sun.
The power plant can still operate normally, and the lights and air conditioners can still work normally.
Three days later,
The global temperature dropped to about 0 degrees. In a short time, due to the heat stored in the ocean and atmosphere, the temperature will not drop sharply.
The biggest problem is that due to the lack of sunshine, a large number of satellites and spacecraft relying on solar energy began to fall into the earth's atmosphere, and maybe you can see one or two gorgeous fireworks.
At this time, in the middle of communication, the navigation system can't work, and it can only be maintained by ground equipment.
1 week later,
When the temperature drops to-17~-20, the energy supply is already very difficult. Some areas with power supply problems began to think about the order of burning books and heating in libraries.
People began to flock to areas with geothermal resources. Due to the small scale of geothermal resources, conflicts will inevitably occur in resource grabbing.
Entering anarchy should be an inevitable event. Conflict, chaos and slaughter will lead to a sharp decrease in human beings on the earth.
The more serious problem is that 90% of small plants will be almost extinct because they can't carry out photosynthesis for a week or so. Food supply has also become a big problem.
The large-scale death of plants will lead to no new oxygen production, oxygen will become a non-renewable resource, and the proportion of artificial oxygen will be higher and higher. At this time, wild animals are dying.
Humans began to consider the large-scale application of the technology of making dead wild animals into long-term cans.
1 year later,
When the temperature drops to about -40~-70, the traditional power generation facilities can no longer operate normally, and there is a big problem in resource supply.
In fact, the cost of living on the surface of the earth is very high, so the governments or consortia of big countries began to consider the closed environment such as "underground city" or "ark", centralized supply, in order to reduce resource consumption, and selected people who entered life (or bought tickets) by lottery.
Of course, these construction projects are based on the premise that there is no major social unrest and social institutions can operate normally.
But this is almost impossible.
So the best result is that human beings predicted the demise of the sun in advance, 100 years ago, but it is best to predict it 20 years in advance. And let most people believe that this is true, not a scam, and all kinds of projects can operate normally.
Two years later,
The average temperature of the earth has dropped to ~- 100, and there is no sign of life on the surface.
There is no difference between the sea and the land. The ocean is covered with thick ice and the whole world is connected into a continent.
Because it is too cold, the spatial components will also condense, fall on the ground and accumulate, and the atmospheric density will decrease. The air pressure also decreases, even if you are not afraid of cold, the blood vessels in your body will burst and die because of the air pressure.
10 years later,
The temperature is still falling.
There is a serious shortage of resources in underground cities. Oxygen can only be obtained through water, and energy is heavily dependent on nuclear energy. Due to the lack of light all the year round, the health problem is very serious, and the average life expectancy has dropped sharply.
In the next 100 years,
Due to the limitation of resources and technology, it is impossible to maintain the normal operation of underground cities, and human beings are gradually extinct.
But there is still life on the earth, those microbes that live in the depths of the ocean and live by the geothermal energy of the ocean.
A frozen planet with an invisible satellite wandered alone in the universe. With luck, maybe we can meet a star like the sun and enter its orbit.
At that time, life may be resurrected again, but there will be no more humans.
If the sun disappears, how long can we live at most? Haha, I'm sorry to answer this question. I am not a scientist or an astronomer, and I am not very clear about this. Obviously, if the sun disappears, we won't be able to do it sooner or later. The question is how long has the sun disappeared, forever or temporarily? If the sun disappears for a period of time, such as a total solar eclipse or a total lunar eclipse, there is no problem. We can live. If the sun disappears forever, then mankind will be finished, so this question cannot be answered!