How many humans can live on the earth, which has given birth to countless living beings?

In fact, biologists and sociologists have been pondering the question of what is the maximum number of human beings that can exist on our planet? After all, many countries around the world are now facing population pressure, because of the continuous development of population, resulting in our living space is constantly compressed. With the advancement of science and technology and the improvement of medical conditions, the population will still be at a very high rate in the future, so if the population continues to grow, the earth will definitely not be able to afford it.

What exactly is the population limit?

According to biologists, they believe that there can be a maximum of 20,026 billion people living on Earth, which is a limit that can be reached based on current scientific conditions. If the population exceeds this number in the future, it will mean that our ecological balance will be balanced.

It has been broken, and at this time there is not enough space and arable land suitable for human habitation and life, especially for arable land and water resources, which are non-renewable. With our population beyond this size, there is no way to produce enough food for them to survive. <>

How to solve the problem of population overload?

In fact, all countries have a clear understanding of this, that is, to reduce the living space of human beings as much as possible, so as to increase food production and reduce their threat to the environment, so now all countries are actually carrying out a sustainable development.

of transformations. Even if it is the future of humanity.

Increasing the number will not cause us to lose the space we rely on, of course, there is a premise here, that is, we protect the environment. <>

Can interstellar immigrants be made in the future?

The reason why our astronomers have been constantly exploring distant alien galaxies is to find another planet of life, so that when the earth is tired of accommodating more people, interstellar migration can be carried out, and existing humans can be sent through spaceships.

Take them to another planet and let them multiply there. But as things stand, it's too difficult to find such a planet.

About 10 billion people. First of all, regardless of whether the planet has the capacity to support these populations, food is the first concern, and there are all kinds of other energy consumption.

100 billion. Because the earth's resources are finite, and nature's capacity is not unlimited, it can accommodate up to 100 billion human beings.

According to scientists' calculations, the Earth can accommodate up to 50 billion human beings, and if this number is exceeded, it is likely to lead to the Earth**.

There are already billions of life on Earth, and human evolution is only a few million years old! It is undeniable that there must have been a more high-tech civilization on the earth than modern humans, although no traces of existence have been found now, it does not mean that there are none!

Among the stars known to mankind, Mars is the planet that is most likely to become inhabited by humans besides Earth.

1. Mars and the Earth are close to the Sun.

2. Mars is similar in size to Earth.

Third, Mars has an atmosphere similar to that of Earth, and although oxygen is scarce, it can be modified to achieve the same level.

Fourth, there is solid water and even liquid water on the poles of Mars.

Fifth, there are no highly intelligent creatures on Mars, and there are no competitors for human beings.

After modification, Mars has the potential to become a planet inhabited by humans.

I don't think that there are so many planets in the universe, it can't be that only the earth can be inhabited, but it hasn't been discovered yet, I think there must be aliens in the universe!!

No, it is not certain that there are still many undiscovered planets in the vast universe, and these undiscovered planets may have human living conditions.

There must be a lot, but human beings don't know that the universe is very big compared to the earth is just a speck of dust, and there are a lot of dust like this that must be suitable for human habitation, but the current ability of human beings cannot fly out of the Milky Way, and can only develop slowly

The earth has always been the home of human survival, caring for the earth and protecting the environment is also a truth that each of us understands, but recently, American scientists believe that the earth is not necessarily the most suitable planet for human habitation, in fact, there are 24 planets outside the solar system, and the conditions are also very good, and they are more suitable for people than the earth!

What is a "habitable planet"? Of course, it is not another earth, but scientists can come to the final conclusion only after comparing the conditions necessary for human life, mass, volume, air, water, and various resources.

American scientists compared various data on 4,500 planets, and finally found that 24 planets are very suitable for human habitation, but in fact, none of the planets can meet all the "habitable" conditions, but as long as the 4 basic conditions are met, it proves that human beings can survive in life, and life is more nourishing than the earth!

Why has mankind never stopped exploring the universe? Why keep finding another planet to replace Earth? In fact, this is mainly related to the sun, the evolution of the sun will not stop, in another 1 billion or 2 billion years, the relative conditions between the earth and the sun will change, the earth will get hotter and hotter, will lose the atmosphere, will lose the ocean, human beings will disappear!

The reason why human beings have been exploring, of course, is for our future considerations, although 24 habitable planets have been discovered, but they are a little too far away from us, all of them are more than 100 light years, this is a place that human beings cannot go, the outermost part of the solar system is the Oort cloud, and the distance from the earth is only one light year, but the American Voyager has been traveling for 43 years since 1977, and the speed is 16 kilometers per second, but according to the distance, America's Voyager still takes 520 years to arrive!

It takes more than 500 years to travel just one light year, but how many years does it take to travel 100 light years? This is clearly not a place that humans can reach!

Even if human science and technology are developing rapidly, and perhaps one day a faster-than-light spaceship can be invented, it will still take 100 years to reach a habitable planet, and it is obvious that this is also a very difficult task, so the earth is still our home, and it is still the earth we will not abandon!

From ancient times to the present, human beings have never lacked flying dreams, and with the further development of science and technology, even the once unattainable extraterrestrial dreams seem to have become a little bit more within reach. According to the overseas **October 6**, scientists in the United States have recently made a major discovery on the topic of alien migration.

A group of scientists from the University of Washington have been studying the habitable planets other than the earth, and have been studying diligently for decades, but they didn't expect to find more than one, a full 24! Even these planets are more habitable than Earth!

Scientists believe that one of the important reasons why these planets are more habitable is that the conditions of these planets are more conducive to species diversity, and all kinds of life can live freely and comfortably on them, after all, there are still many extreme conditions on the earth today, which are quite unlivable, although there are many highly adaptable species living in this extreme environment, but maybe these species can live better in a better environment? Scientists also point out that if the stars around these planets change more slowly than Earth, then it is also greatly conducive to habitation.

Scientists believe that the one with the highest habitability index of the 24 planets may already have life, and they also said that they will continue to observe the planet to try to find evidence of the existence of extraterrestrial life.

Of course, there are still many obstacles to the migration route, and the distance is the largest, because these planets are more than a hundred light-years away from us, and the current technical conditions cannot help us to go to these planets, but the emergence of the next generation of astronomical telescopes may help humans to better observe and study these planets.

It is true that this blue-green planet is quite cute, but as the saying goes, "people go to higher places, water flows to lower places", who said that we can't find a better living environment than the earth? There may still be many obstacles, but there are still dreams, and it is hard to guarantee that one day they will come true!

108.2 billion. The time spent on Earth is still relatively short, so the number of births is relatively small.

Billions. At the beginning, the number of human beings was not large, but now that nutrition and medicine have kept up, the population is large**, and the number of people is estimated to be tens of billions from birth to the present.

This is impossible to verify, because there was no population planning before, and roughly estimated, there were tens of billions of people

108.2 billion, about 6 million years since the discovery of the world's earliest humans.

A total of 24 "super-habitable" planets may have more suitable conditions for life than Earth, as well as better stellar disturbance than the Sun, researchers say.

The study, led by Washington State University, discovered some planets that are older, larger, warmer, and wetter than Earth.

They added that life is more likely to thrive on planets orbiting changing stars that live longer and travel slower than the sun.

**: The planet chosen by the researchers is said to have better stars than the Sun.

The 24 planets that were discovered were all 100 light-years away, which means it's difficult to get a closer look at them.

However, the researchers say the findings could be useful for future telescope observations.

Professor Dirk Schultz-Makucci, one of the principal researchers, said: "With the advent of the next space telescope, we will have more information, so it is important to choose some targets.

Astronomers have created a "super-habitability standard" that they use to measure 4,500 known exoplanets.

Livability is not defined as a definite sign of life, but rather means that there are conditions necessary for life to flourish.

The team looked at the G-star system — similar to our Sun — which is less than 10 billion years old — as well as the K-dwarf star system.

K dwarfs are much smaller, cooler and have very long lifespans, ranging from 20 billion to 70 billion years. This means that planets orbiting around may be older, giving life a chance to develop as it did on the Earth.

Earth's current age is estimated to be 4.5 billion years old, however researchers believe that a planet between 5 billion and 8 billion years old could be well hostto life.

**: These planets can help focus future telescope observations.

People are also looking for greater mass as this will keep the heat inside the planet for a longer period of time as well as have a stronger gravitational pull to keep the atmosphere longer.

Nakaydan: Water is also another key feature that has been confirmed, being sought out in slightly more quantities than on Earth among super-habitable planets.

If the temperature on the Earth's surface is about 5 degrees warmer than the Earth's, it is also considered more suitable for life.

None of the 24 planets discovered met all the criteria, but one met four key characteristics that mean it may be more suitable for life than Earth.

Professor Dirk Schulze-Makuch said: "Sometimes it is difficult to convey the principle of a super-habitable planet because we think we have the best planet.

We have a large number of complex and diverse life forms, many of which can survive in extreme environments. It's good to be adaptable to life, but that doesn't mean we have the best of everything. ”

For every 100 million people, the annual consumption of resources is 1.

Then 11 billion people consume resources in 90 years:

110 90 = 9900 servings.

9 billion people consume resources in 210 years:

90 210 = 18,900 servings.

Freshman Resources per Year:

18900-9900) (210-90) = 75 servings.

In order for human beings to continue to reproduce, the amount of resources consumed each year cannot exceed the amount of resources that can be regenerated.

So the planet can feed up to 7.5 billion people.