What other celestial bodies in the universe have life? 15

For example, it has long been discovered that there are some simple proteins in cosmic dust, and some microbial spores can attach to interstellar dust particles and fall to the earth, so that the earth has its first life.

The beings with advanced life that we now find do not.

Life is suspected to exist in 'Endodos', Enceladus, Mars or the Moon, but there is no definitive evidence.

All planets have life, but most of them we don't know.

On Namek there are Super Saiya and Namek.

First of all, the universe is a four-dimensional space. To put it simply, it is the length, width, height and time. Our human senses are three-dimensional, that is, length, width and height, and we can only think of the element of time in our minds, but we cannot really feel it.

Try to feel how much time it takes for sunlight to reach the earth, and you definitely can't. ）

Then, we don't feel the edge of the universe. In such an infinite space, there are countless stars. Stars are stars that emit light and heat themselves; Planets, on the other hand, are stars that do not emit light on their own and revolve around stars.

As the Earth, it is a planet that does not shine and heat on its own, so it is suitable for human survival. Think about it, there is a person who lives on a star like the sun, can he stand it?

But even if this is the case, it is not excluded that there are certain beings that are able to withstand an environment beyond the physical conditions of human beings. Since this is the case, it is necessary to find at least one of these beings to prove that there is life in the universe.

However, no one has found any such life. Without evidence, speculation cannot be established. Therefore, this speculation is not valid at present.

Note that a guess is a guess, and just because it can't be proven at the moment doesn't mean it's wrong.

It hasn't been discovered yet, but I personally believe that life in outer space is inevitable.

It is possible to have life.

There are even fewer planets with advanced life.

At present, it has not been discovered that there is life in other celestial bodies in the universe besides the Earth! To be explored.

If there is life, it should only be found on Earth, but traces of life have been found on many terrestrial planets and even on some planets with extremely harsh conditions, or compounds similar to the original state of early Earth.

I don't know, ask the aliens to go.

No one on earth can say that.

Scientists are not sure.

Occasional dizzy, buddy, you aliens. How do you not know that so far, no aliens have been found. But today I can go back to my dorm room and tell my classmates that I have met aliens.

Categories: Education, Science, >> Science & Technology.

Problem description: By the way, there is information about the universe.

Analysis: 1. Life requires extremely harsh conditions, such as temperature, climate, gravitational force, planet size, star size, distance... There are many, many conditions, which are very advantageous to you.

2 The universe is only 14 billion years away from the present time, and the simplest life began to exist more than 2 billion years after the formation of the earth, emphasizing that the process of life formation is long.

3 The universe is infinite, but we humans have limited access to space, which is extremely unfavorable to you, so be careful to avoid it.

Conditions for the Origin of Life:

The origin of life is one of the greatest scientific problems of our time. But how are cells produced from inorganic matter? What are the environmental conditions required for this process?

Current scholars engaged in the study of the origin of life have put forward the following views:

1. In the early stage of the earth's environment, it must have a certain material composition, including the main components of biological organisms: carbon, hydrogen, oxygen, nitrogen, etc. The study of cosmochemistry has confirmed that these elements are ubiquitous in celestial bodies and interstellar space.

2. Life on Earth is most likely to be born in water, and it lives in water for nine-tenths of the time. Water is an indispensable medium for living things on Earth. In addition, biochemical studies have also found that a small number of organisms can live in liquid ammonia and methane at very low temperatures.

3. The biochemical reactions that occur in living organisms have appropriate temperature requirements, and if the temperature is too high, bio-organic molecules will inevitably move too much or even decompose; The temperature is too low, and the life process is too slow or even stopped. If life takes place in water, the temperature is roughly between 0 and 100 degrees.

4. Organisms can only survive by exchanging materials with the surrounding environment, so there must have been a certain amount and quality of atmosphere on the early earth. Cosmobiological research suggests that life cannot occur on celestial bodies without an atmosphere, and that celestial bodies must have considerable mass to retain the atmosphere around them. If the mass is too small and the gravitational force is too small, there can be no atmosphere.

A celestial body without an atmosphere cannot have liquid water or other liquid substances on its surface, and there can be no life without liquid substances as solvents.

5. Life requires energy, and the energy of the early earth mainly includes light and heat. Cosmic rays, geothermal, volcanoes, etc., all provide the energy driving force for the origin of life.

6. In the past, some people used oxygen as a condition for the occurrence of life, but now they think that this is wrong. The Earth's primordial atmosphere was hypoxic, and life on Earth is taking place during periods of hypoxia. The original atmosphere is mostly reducing gases such as: methane, hydrogen sulfide, hydrogen, etc.

It is better to add the extremely small odds of those conditions to strengthen the persuasiveness.

Is the Earth the only celestial body in the vast universe where life exists? Perhaps this is the most difficult question for mankind to determine since ancient times. To be logical, we have to start with the composition of life and the material conditions on which life depends.

It is known that life is the form in which proteins exist, while proteosomes are polymeric organic compounds. Therefore, for there to be life in celestial bodies, there must be carbon, hydrogen, nitrogen, oxygen and other elements, and the appropriate temperature required for these elements to constitute organic compounds; Second, there must be energy sources such as light and heat that supply life activities; Third, liquid water is a necessary component of living organisms, that is, a living celestial body must be a place where liquid water is disturbed by the liquid holding of water; Fourth, the atmosphere is also necessary for the existence of life, because it can protect life from the bombardment of meteorites and harmful cosmic rays, and also prevent large amounts of water from escaping.

In this way, we can logically answer that any celestial body has the possibility of forming life as long as it meets the above conditions.

Until now, astronomers believed that only Earth had life in the solar system. However, it must not be said that in the Milky Way, where our solar system is located, the earth is the only celestial body where life exists, and of course, it cannot be said that there is no life in the entire universe.

Our galaxy has about 100 billion sun-like stars, and according to conservative calculations, one-tenth of them, that is, 10 billion stars, are surrounded by planets. The more stars a planet orbits, the more likely it is that life will exist. If we estimate the number of planets with life to be 1 in 100 million, then there are at least 100 celestial bodies in the Milky Way.

Of course, the life mentioned here is not necessarily like the humans, birds, fish, insects, beasts and the like that we are familiar with on earth, it may be more primitive than the simplest creatures on earth, or it may be more advanced than the most complex life on earth. All of this is up to astronomers to explore and unravel the mysteries.

The most promising in the solar system are Mars and Titan, both of which have the conditions for life, water. There are traces of life on Mars, and perhaps some microbes are still alive.

Mars (Mars) is one of the eight planets in the solar system, the astronomical symbol is, is the fourth planet in the solar system from the inside to the outside, belongs to the terrestrial planet, the diameter is about 53% of the earth, the rotation axis inclination, rotation period are similar to the earth, and the rotation time is about twice the earth's rotation time. In the West it is called "Mars", the god of war. The orange-red exterior is hematite (iron oxide) on the surface

Mars is basically a desert planet, with sand dunes and gravel all over the surface and no stable liquid water bodies. The atmosphere, dominated by carbon dioxide, is thin and cold, with sand and dust suspended in it, and dust storms occur frequently every year. Mars has a polar crown of water ice and dry ice at both poles, which waxes and wanes with the seasons.

Compared to Earth, the geological activity is relatively inactive, and most of the surface landforms were formed during the more active period of antiquity, with dense craters, volcanoes and canyons, including the highest mountain in the solar system: Mount Olympus, and the largest canyon, Mariner Canyon.

Another unique topographical feature is the stark difference between the northern and southern hemispheres: the south is an old, crater-filled highland, while the north is a younger plain.

Mars, because humans have found that there is water there and there is a little atmosphere around it.

Mars and Earth Position 6 because they both have the resources of Earth, so I think there may be life on these two planets.

Outside of Earth is Mars. At least for now, only Mars has been discovered.

The most likely is certainly the ...... that we humans have not discovered so far

Otherwise, ......