Can humans go out of the galaxy, is there only humans in the entire galaxy?

The Earth's solar system, located in the outermost part of the Milky Way, is about 20,000 light-years away from the edge. Even the vertical distance is a thousand light years. The extremely long distance of space travel away from the Milky Way can only be imagined in three ways:

The first way is to create a spacecraft that travels at close to the speed of light. At this high speed, the relativistic effect allows spacemen sitting on it to fly out of the galaxy with just decades of their youth.

The second method is to use the snail spaceship (about 1/1000th of the speed of light) that can be built with modern technology, plus cryonics, to slow down, or even pause, the metabolism of astronauts until they reach their destination (the astronauts in the movie Alien travel in this way).

The third method is also to use the snail spaceship, but to build a biosphere that is self-sufficient in air, water and nutrients, and the astronauts live and reproduce in it, using the relay method of "Yugong moving mountains" to complete the journey.

But either way, astronauts are also destined to say goodbye to their relatives and friends on Earth, so it is extremely inhumane, and the results of the detection will have to be very far in the future before they can reach the hands of geoscientists. Therefore, unless you actually find a shortcut in time and space and can use it, the possibility of such a trip is very slim.

Questioner: Lau Kai-yip [Assistant Captain of Hong Kong Space Boat]).

Yes! When the technology develops to the point where it can be used as a space-time flight machine that is faster than the speed of light.

Absolutely! It's just a matter of time. Not yet.

Not in the last few hundred years!! Now that we can go to the moon, it is a great international space technology, and even the Earth-Moon system has not yet come out!!

What are you going to do out of the galaxy? Explore? It's okay if you don't go out! Unless there is a clear goal - the discovery of alien creatures, there is no need!

Hello! There are only humans in the entire galaxy. Whether or not there is a bright bush in the entire galaxy is a scientific proposition, and there is no conclusive evidence to prove or deny it.

The Milky Way is a vast galaxy containing about 20 billion stars, and there may be planetary systems corresponding to each star, some of which may have suitable conditions for life. Life forms in the universe as currently known to mankind are limited to life on Earth, but scientists have been searching for clues as to whether life exists on other planets. Although current observations have not yet discovered extraterrestrial life other than humans, humanity's understanding of the universe is still limited.

We continue to delve deeper into the study and use new technologies and observations to search for signs of life on other planets. It is speculated that there may be other Earth-like planets in the Milky Way galaxy that may have life forms that are similar or different from humans. But to confirm this, we need more research and further observations of Zen key burial.

Therefore, the question of whether the entire galaxy is only existed is a matter of scientific research and discovery. Current scientific knowledge and observational data do not provide a definitive answer. Hope mine can help you!

As the only intelligent creature on the earth, since human beings gradually realized the vastness of the universe, whether there are other civilizations in the galaxy, scientists have been looking for the answer, because the galaxy is too vast, this can't help but make people question, it is impossible for only human beings to exist in the entire galaxy.

Although the Earth is the only known planet with life, the solar system and the Earth that gave birth to humans are only one of the hundreds of billions of celestial bodies in the Milky Way, and they are not unique. Because the odds of having a habitable planet around a star are small, if you zoom in on a small chance of hundreds of billions of stars with galactic coefficients, you can find a staggering number.

Calculate the intelligent civilization of the galaxy:

In fact, in the last century, someone proposed a formula to calculate the intelligent civilization of the galaxy, that is, the Drake formula, which is based on the number of stars in the galaxy, the proportion of stars with planets, and the number of terrestrial planets in each planetary system, and the proportion of habitable planets with life evolution to estimate the existence of intelligent civilizations.

However, many of the values in this formula cannot be known, so it is not certain how many intelligent civilizations exist, but it is certain that if we estimate by the minimum value, there are at least 36 intelligent civilizations in the galaxy, which means that the distance between the two civilizations is at least 10,000 light years, and it is conceivable that the distance traveled by human radio signals is only more than 100 light years, which means that it will take 10,000 years for our signals to be restored.

There could be millions of civilizations in the galaxy. There is a high probability that life on Earth may not be the only one, but the scope of human exploration is still too small compared to the Milky Way, and only people on Earth are known.

The existence of life on earth and human civilization tells us about the possibilities of the universe. Since human beings can appear and evolve civilizations, there must be other life in the universe. There are about 200 billion stars in the Milky Way, most of the stars are smaller than the sun, and they have a longer lifespan than the sun, almost every star has its own planet, according to the range of the orbit of the earth in the solar system, you can infer the habitable zone of the star, and life may occur under the right conditions.

There are many conditions for the formation of life, and life on Earth alone is not only free of liquid water and small molecular gases, because there is another important element in life on Earth - phosphorus. Although phosphorus is not very common in the universe, it is not unique to the solar system, which means that life may still be born on other terrestrial planets. And life in the universe doesn't have to be carbon-based life forms on Earth.

In the past, scientists have also sent messages to the vast universe, but there is still no response after many years, the universe is so big that the signal of human beings cannot travel far before disappearing. Humans have not yet been able to go out of the solar system, and the scope of the universe is still very small. Human beings only know that there is life in the solar system, but they cannot deny the existence of other life in the universe.