What are the conditions for the birth of life, and what are the conditions for the birth of life?

What exactly is the origin of life? Could it be the rumored first life on Earth, "Luca"?

The conditions for the existence of life on Earth:

External conditions: relatively quietly, stable and safe cosmic environment.

1.Stability of the sun – provides light and heat.

2.Safe interplanetary space – orbits are coplanar and codirectional, and large and small planets go their own way. Self conditions:

Temperature- The earth is at a moderate distance from the sun, making the average temperature on the earth's surface moderate.

Necessary conditions for life: atmosphere - The volume and mass of the earth are moderate, so that a large amount of gas accumulates to form an atmosphere.

3.Alteration of the composition of the atmosphere by the action of organisms: water-crystalline water vaporization of the primordial ocean.

1) There are necessary constituent substances that can synthesize organic matter such as carbon, hydrogen, oxygen, nitrogen and other elements.

2) life requires moderate light and heat, the temperature is too high, and the chemical bonds of carbon atoms are broken; If the temperature is too low, the biological process will come to a standstill.

3) There is liquid water, which is an absolutely indispensable component of living organisms.

4) There is an atmosphere, and the atmosphere has three functions, one is that the atmosphere synthesizes organic matter through ultraviolet irradiation and electric sparks; the second is to protect life safety from meteorites and cosmic rays; The third is to protect the heat of the earth's surface.

5) The above conditions can be maintained for a long time, so that life has a process of generation, development and evolution.

The above conditions are fully met only on Earth, and the hope that was pinned on Mars in the past is now almost disappointed. Some people think that life is possible in Titan, where there is a primitive atmosphere like the Earth, close to one atmosphere, but it has not been confirmed so far, and it seems that the possibility of finding life in the solar system is unlikely. dang

To go to other universes, you need to use a means of delivery, and you need to move the earth to a vehicle. Therefore, the development of rocket technology is directly related to the migration of human beings on earth to space. In the previous section, we talked about the development of rocket technology.

Looking at the state of rocket technology, mankind's understanding of space, expansion, and space is still in its infancy, and only photon rockets are conceived. And some people also believe that the speed of light is an extreme speed, and there is no matter beyond the speed of light. This often leads to the sadness that people cannot know the universe.

In fact, the universe can be known and fully understood. The universe as we know it alone may have a radius of more than 8 billion light-years, but to truly understand it, we have to see it for ourselves. As far as the current human life is concerned, the ** time is only more than forty years, due to the limitations of past research, only in the field of freezing the human body, that is, people who visit a certain area of the universe must prolong their life through freezing.

But research shows that this is not a perfect approach. The difficulty with this method is that there is no way to resurrect the human body after freezing. Some scientists also believe that the resurrection of the frozen human body is nothing more than a fantasy.

From the point of view of increasing the speed of rockets, it takes at least a rocket with a speed of light of more than 200 million times to solve a few (just) practical problems in order to travel to and from the universe as we already know it.

According to current astronomical theories, it is quite possible that there are planetary systems in a certain type of star. However, no definitive conclusions can be drawn at this time. The chemical composition of planets where there is life is limited to a radius of between 1,000 km and 20,000 km, for example, the amount of heavy elements directly affects the occurrence of life.

It is no accident that the so-called Earth-type planets, whose atmospheres are suitable for the occurrence and development of life, are quite close to the Sun. The presence of a hydrosphere on the surface of the planet, the sea, is also a very important condition, because in the water, which can be protected from the threat of radiation, the first lower organisms are most likely to be produced. Although these are not the only conditions necessary for life to occur, these are enough to make us optimistic.

Many astronomers believe in the possibility of forming planetary systems around stars. Since there are hundreds of billions of stars in the Milky Way, it can also be thought of as hundreds of billions of planets. Of these many planets, it is likely that some of them have conditions suitable for life.

As long as there are such conditions, it is possible that some of these planets will have intelligent life. This kind of logical reasoning is so rigorous that it looks like a hypothesis, but in fact it is not a hypothesis at all.

Basic energy, temperature environment.

Life requires a star to provide the energy for the evolution of matter and maintain the environment of liquid water on the planet's surface.

Stars don't need to be too big (too big and short-lived, not enough time to support life) or too small (too small to have enough heat). It can't be a binary star system.

For life to be born on a planet around a star, the eccentricity of the planet's orbit should not be too large (too large an eccentricity becomes a comet).

The planet can't be too far away from the star (too far away to have enough heat), and not too close (too close will have a braking effect, and there will always be only one side facing the star, like the moon with a revolution and rotation period, the disadvantage is that one side is hot and the other side is cold). Also closer to the water will be roasted dry).

The planet must have a certain mass, the core must not cool down too quickly, and the temperature conditions provided can concentrate the chemical soup.

The planets rotate (rotate perpendicular to their orbits) so that they are evenly heated.

Protective stars cannot be near the center of the galaxy, which has a high density of stars and is more likely to explode a supernova (a supernova explosion emits a gamma-ray storm that can kill almost all living things). And not at the edge of the galaxy, the edge of the star has a slow metabolism.

In addition to the protection provided by the stars, it is desirable that there are other large planets in the outer layers of the planet's orbit, and it is also desirable to have moons, which can help keep asteroids at bay.

The planet must not be too massive (high gravity will cause a super-dense atmosphere and super storms) and not too small (too small will lose the atmosphere).

The planet's magnetic field and atmosphere can help form the protection of high-energy rays.

The ozone layer (required for the evolution of life to terrestrial life).

Matter, information, energy related.

Before this generation of stars, there will be supernovae to produce various elements.

There should be rocky planets (gas planets have very little liquid water and therefore cannot dissolve various minerals).

It is necessary to have liquid water (gaseous water and solid water are not conducive to the interaction and evolution of the living molecules dispersed in them).

Molecules interact and evolve long enough to accumulate living chemical molecules, and allow various permutations and combinations between molecules.

There must be an atmosphere, and the movement of the atmosphere produces thunder and lightning to help synthesize matter, and the atmosphere is a part of the material cycle (nitrogen, hydrogen, oxygen, and carbon can all participate in the circulation through the atmosphere).

There is chemical energy or solar energy, which allows life to be used directly.

The birth of life is indeed not too complicated. With the right temperature and moisture, and a long enough time to evolve, we will be able to evolve from inorganic to organic, then to living things, and even to intelligent organisms.

Of course, these three conditions have excluded the vast majority of planets, and only the Earth has such conditions in the solar system, and Mars is likely to have the first two conditions, but the time is too short, as Mars moves away from the sun, the temperature drops, and the water evaporates, and the life that once existed will be completely extinct before it has time to evolve into intelligent life.

On the one hand, the vast majority of planets, including the relationship between stars and planets, are difficult to meet these three conditions, so there are very few planets that can give birth to life until it can evolve into intelligent life. On the other hand, the universe is infinite and the planets are infinite, although the proportion is very small, but there are still some planets that meet these three conditions, thus giving birth to life and evolving into intelligent life. Absolutely, it's still a lot.

However, because the conditions are very harsh, the opportunity for intelligent life evolved from two different planets to meet each other is extremely rare. So, there are definitely aliens (extraterrestrial intelligent life), but it is very difficult to find them. And it is extremely unlikely that they will come to Earth.

The condition for the emergence of life is that there must be water, and then there are amino acids, and amino acids and water are the most basic elements of the creation of life, and without amino acids and water, there would be no life on this planet.

All forms of life are possible, and so are the conditions under which life arises.

The key components of known life are water and amino acids, as well as carbon.

Energy is necessary for the birth of life on primordial earth, and there are various forms of energy available on primordial earth. Such as ultraviolet rays, lightning and large amounts of heat released by volcanic eruptions. In addition, the energy of cosmic rays, radiation, and meteorite impacts can all contribute to the chemical evolution of life, that is, simple gas molecules will become extremely active after absorbing energy, and then produce chemical reactions to form complex (living) matter.

Miller, a scientist in the United States, was the first scientist to successfully synthesize complex (life) matter by simulating the conditions of the primitive Earth's atmosphere.

The most basic conditions for the production of life are, water, temperature, food, etc., which are indispensable, and then there is a suitable growth environment.

I feel that there are some problems in this question, whether life is produced by human life or plant life, if we only look at the conditions of life life, that is, air, water and food. If from the perspective of life generation, the husband and wife can produce a new life after marriage, this condition must be reasonable and legal husband and wife.

For life to exist, there must be seven conditions, namely, the right water, the right sunlight and temperature, the right time, the right space, the right air, the fertile land (with all the elements necessary for life), and the seeds that can breed new life.

Biologists generally agree that the conditions under which life arises are as follows: Have the right temperature. The drop in the temperature of the Earth's surface provides the necessary conditions for the development of life.

There should be small molecules that form organic matter. The original atmosphere contains hydrogen, ammonia, methane, and water vapor, among others.

It is necessary to have the energy needed for material change. Lightning, ultraviolet light, etc., provide energy for the change of matter.

It is necessary to have a micro-environment that nurtures life. The water environment formed by the pristine ocean became the cradle of life.

.(1) Have a suitable temperature. The drop in the temperature of the Earth's surface provides the necessary conditions for the development of life.

2) There should be small molecules that form organic matter. The original atmosphere contains hydrogen, ammonia, methane, and water vapor, among others. (3) It is necessary to have the energy needed for the change of matter.

Lightning, ultraviolet light, etc., provide energy for the change of matter. (4) It is necessary to have a micro-environment that nurtures life. The water environment formed by the pristine ocean became the cradle of life.

The primordial ocean provided the environmental conditions for the accumulation of organic matter, the formation of polymolecules, and the evolution of primitive life.

The conditions for life to arise must be suitable and stable, with a certain temperature, a certain water environment, sufficient light, and abundant organic and inorganic matter.