Looking at the earth from the universe, the earth is a beautiful blue planet. There are many creatures living on the earth, including marine creatures , terrestrial creatures, amphibians and microorganisms, etc. Among many creatures, human beings are The most intelligent life on earth, human beings have been constantly exploring the mysteries of the world since their birth. After so many years of research, humans finally have a certain understanding of the universe. Modern science believes that our universe was born 13.8 billion years ago. , 13.8 billion years ago, there was a singularity that became the overlord. The singularity was a point with infinite mass, infinite energy, infinite density, and infinitely small volume. After this point exploded, the universe rapidly expanded in all directions. .
It took 13.8 billion years for the universe to expand into what we see now. There are many celestial bodies in the universe, such as stars, planets, comets , asteroids, neutron stars and so on. These celestial bodies are the universe It was created after the Big Bang. However, among many planets, only the Earth gave birth to life. Scientists believe that the reason why the Earth can give birth to life is mainly because the Earth meets the basic conditions for the birth of life. These basic conditions are suitable temperature. , sufficient air and abundant water resources. If a planet can meet these basic conditions, then the possibility of life being born on this planet is very high. Scientists have also made a lot of efforts to search for extraterrestrial life.
45 years ago, scientists launched the Voyager 1 probe outside the solar system. The purpose of launching this probe was to let it fly out of the solar system and explore the mysteries outside the solar system. However, after so many years, travel The Voyager 1 probe has not completely flown out of the solar system. Scientists have calculated that if the Voyager 1 probe is flying at the speed of flight, it will take at least tens of thousands of years to completely fly out of the solar system. For humans, Tens of thousands of years is really too much time, so humans have to find other ways to find extraterrestrial life. Some time ago, scientists discovered two exoplanets near the solar system. These two exoplanets are called super Earth.
So far, scientists have discovered more than 5,000 exoplanets in the universe. Therefore, scientists generally believe that in addition to life on earth, there are also alien life in the universe. Since the planet earth can give birth to life, then Life may also be born on other planets. The two planets discovered by American scientists are both rocky planets, and the two planets are located around the same host star. This makes scientists very excited. The scientists named the two planets HD260655b and HD260655c. The radius of HD260655b is 1.2 times that of the Earth and the mass is 2.1 times that of the Earth. The radius of HD260655c is 1.5 times that of the Earth and the mass is 3.1 times that of the Earth. From the density point of view, these two planets are indeed rocks. planet.
Seeing this, many people may have a question, that is, how do scientists calculate their volume and mass? First of all, scientists can estimate the size of the host star through the decrease in brightness caused by the transit of the planet. So can life be bred on these two planets? Through the observation of these two planets, scientists found that these two planets are not in the habitable zone of star system . Generally speaking, if a planet wants to give birth to life, it must be in the habitable zone of the star system. We The Earth is located as the third planet in the solar system, so it can have a suitable temperature on the Earth. The distance between HD260655b and the star is only 4.4 million kilometers, and it only takes 2.87 Earth days to complete one revolution. Its surface temperature is as high as 436.85 degrees Celsius.
It is difficult for life to survive at such a high temperature. This is similar to Venus. The temperature on the surface of Venus is very high, so no life is born on Venus. HD260655c is only 7.12 million kilometers away from the star, and the revolution period is only 5.1. The surface temperature is about 286.85 degrees Celsius, which is very high for life.In a high-temperature environment, it is difficult for water to exist in liquid form, so scientists believe that the possibility of life on these two planets is very small, and at such a close distance, these two planets need to withstand super strong radiation for life to It simply cannot withstand strong radiation exposure. Another important reason why our earth can give birth to life is because there is a thick atmosphere on the earth.
The atmosphere can withstand various radiations in the universe, so that living things will not be directly irradiated by radiation. If there is no atmosphere, then various radiations in the universe and solar ultraviolet rays will directly illuminate the skin of living things, which will have a huge impact on living things. , judging from various circumstances, the possibility of the birth of life on the two planets discovered by American scientists is very small. But there is no need to be disappointed. Scientists point out that there may be other planets around HD260655, and they may also be rocky planets. This shows that there may be life in this star system. However, because human beings' current technology is not developed enough, we can only see As for the general situation of this star system, with the advancement of human science and technology in the future, maybe we will be able to see more mysteries of this star system.
However, scientists are still not sure that there is no life on these two planets. After all, humans do not understand life thoroughly enough. Maybe life is far more powerful than we imagine. For life on earth, suitable temperature and sufficient Air and abundant water resources are very important, but for alien life, it may be able to survive without these conditions, but we have not found alien life yet. The diameter of the universe that humans can currently observe is about 930 light Years, this range is not the entire range of the universe. The universe may be larger than we imagine. How big is the universe? Scientists are still studying it.
Many scientists now believe that there are alien life in the universe, and the technology of many alien life is more powerful than human technology. After all, the universe was born 13.8 billion years ago, while the earth was only born 4.6 billion years ago. If you look at it this way , the earth is not one of the earliest planets born in the universe. Maybe alien civilization has discovered the earth long ago, but because the earth is in a remote area of the galaxy and there are not many resources around it, alien civilization has never come to the earth. Editor I believe that extraterrestrial civilization must exist, but humans have not found it yet. In the future, if human technology is powerful enough, we will definitely be able to find extraterrestrial life. I hope that this day will come soon. What do you want to say about this? Of?
