The earth is a blue planet. The earth belongs to the solar system. There are eight planets in the solar system. They are Mercury, Venus, Earth, Mars, Jupiter , Saturn , Uranus and Neptune . In There is also a Pluto outside Neptune. Pluto used to be a planet, but later scientists believed that Pluto's size and mass were too small, so they kicked Pluto out of the ranks of planets. If there were only The eight planets . Among the eight planets, only the earth has added a lot of color. Especially after the emergence of human beings, many mysteries on the earth have been solved. If humans had not appeared, the mysteries on the earth may never have been revealed. will be untied.
Human beings are the most intelligent life on earth. Since their birth, human beings have been constantly exploring the mysteries of the world. After thousands of years of scientific and technological development, human beings have now been able to leave the earth and explore the universe. This shows that the speed of human technological development is still very fast. Quickly, according to scientists’ observations of the universe, we can know that the universe is a huge and boundless interstellar space. In the universe, there are many celestial bodies, including planets, stars, neutron stars, comets, white dwarfs, etc., which humans can currently observe. The diameter of the universe is about 93 billion light-years, and this range is not the entire range of the universe. The universe may be much larger than we imagine. How big is the universe? Scientists are currently actively exploring it.
On January 17, relevant media reported that the U.S. Dark Energy Spectrometer project broke all previous records of 3D galaxy surveys. After the first 7 months of surveys, it successfully drew the largest and most detailed map of the universe in history. According to relevant personnel, each inconspicuous dot on the map represents a galaxy, which means that each dot is equivalent to a Milky Way. The current scope of the Milky Way has expanded to 200,000 light-years. For humans, In terms of distance, this range is very large, because 200,000 light-years is equivalent to 200,000 years of light traveling at the speed of light, but for the universe, it is just a small dot. From here we can see how big the universe is?
According to research, we can know that more than 7.5 million galaxies have entered this map, and scientists are adding 1 million galaxies to it every month. In November 2021, DESI has already mapped 250 galaxies. The redshift of 10,000 galaxies have been cataloged. According to scientists' speculation, the map of the universe will be completed to 35 million galaxies in 2026. With the continuous advancement of human technology, humans will certainly be able to draw larger maps of the universe in the future. , seeing this, many people may have a question, which is why so much energy is spent on making a map of the universe? In fact, drawing a map of the universe is very helpful for humans to explore the universe.
Ever since humans walked out of the earth, humans have always wanted to know how big the universe is? In order to explore the mysteries of the universe, scientists have also made a lot of efforts. 45 years ago, the United States 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. , exploring the mysteries beyond the solar system. However, after so many years, the Voyager 1 probe has not flown out of the solar system. Scientists have calculated that if the Voyager 1 probe is flying at its current speed, it will completely fly out. The solar system will take at least tens of thousands of years. For humans, tens of thousands of years is really too long.
It is really too difficult to fly out of the solar system at the current human speed. Not only that, when scientists observe the universe, they find that our universe is still expanding. At the beginning of the 20th century, the American physicist E. German. Hubble discovered when observing galaxies that the spectra in the galaxies showed a red shift phenomenon . The occurrence of this phenomenon proved that these galaxies are moving away from us. After seeing this phenomenon, Edwin Hubble proposed A bold conjecture was made, that is, our universe is still expanding. After this idea was put forward, many scientists could not believe it, because before this, scientists had always believed that our universe was static.
As a result, many scientists observed galaxies one after another, and finally found that Edwin Hubble's theory was correct. This view not only gave humans a new understanding of the universe, but also made scientists feel very desperate, because humans After stepping out of the earth, I have always wanted to know how big the universe is? If our universe continues to expand, then we may never know how big the universe is, so now scientists need to explore the universe bit by bit and draw a map of the universe, in order to better explore the universe. According to the map of the universe We can speculate about how the universe came into being.
Modern science believes that our universe was born 13.8 billion years ago. 13.8 billion years ago, a singularity exploded. The singularity is an infinite mass, infinite energy, infinite heat, and infinite density. , an infinitely small point. 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. At present, the theory of Big Bang is widely used in the scientific community. It is believed that scientists have inferred that the universe was born from the Big Bang through the cosmic microwave background radiation and the periodic table of elements. However, it is not yet completely certain. In the future, as humans continue to improve the map of the universe, based on the map of the universe, we may be able to It is speculated how the universe was born, so that is why scientists map the universe.
After drawing the map of the universe, scientists can also use the map to determine the approximate location of celestial bodies in the universe, and it is also promising to search for extraterrestrial life. Currently, scientists are actively searching for extraterrestrial life. However, due to the limited technology of human beings, up to now So far, scientists have not discovered extraterrestrial life in the universe, but scientists believe that there must be extraterrestrial life in the universe, and there are a lot of them. After all, if the earth can give birth to life, it means that other planets must also be able to give birth to life. In the future, with the development of human technology With the progress of science and technology, maybe humans can find extraterrestrial life. The editor hopes that this day will come soon, and I also hope that humans can draw a complete map of the universe as soon as possible, because only in this way can human civilization be passed down in the universe for a long time. Looking forward to this day coming, do you have anything to say about this?
