How big is the Milky Way? Why may humans never be able to leave the galaxy?

With the successful launch of the first artificial satellite, the first astronaut entered the universe, which marked a great progress in human spaceflight. From the time when humans first unlocked the galaxy, we have longed to be able to get out of the galaxy and enter the universe, but now that decades have passed, such a desire seems to be becoming more and more slim, and some people even think that humans may never be able to leave the galaxy, why is this?

Now that Voyager 1 has been wandering in space for more than 40 years, many people wonder where it has drifted, but it has reached the Kuiper Belt. Some people think that it has rushed out of the Milky Way, but in fact, the area of the solar system is very vast, although it has reached the Kuiper belt, but waiting for it is also the Ultra Nebula, scientists believe that only through this Ultra Nebula, Voyager 1 can be regarded as really out of the solar system, to achieve this wish, it has to work for at least 10,000 years, at that time Voyager 1 has long disappeared.

Therefore, human beings are very small in front of the universe, and the small Milky Way is still shackled to our existence, according to the exploration of scientists, its diameter has exceeded 150,000 light years, and in fact, its true diameter may have exceeded 200,000 light years. It contains hundreds of billions of stars, and even if we could reach the Milky Way, it would probably take hundreds of years to get out of the galaxy completely.

This is only the scope of a galaxy, in our opinion the boundaries of the universe are endless, according to scientists' calculations, there are hundreds of other galaxies outside the galaxy, so the diameter of the universe can even reach hundreds of millions of light years, human beings want to enter the universe, and even take hundreds of millions of years, which is simply a fantasy for us, so the galaxy is just a starting point, and the goal of human beings is the sea of stars.

Some people think that perhaps with the continuous progress of human science and technology, we can beat the speed of light in tens of thousands of years and achieve space travel, but this idea is unrealistic in the eyes of scientists, Einstein once proposed that the speed of light is beyond that of any object, and scientists have also explored this theory, using particle accelerators, the speed they obtained can only be close to the speed of light and cannot be surpassed. Therefore, people's assumptions can only become utopian.

Is it true that humanity can't get out of the galaxy? In fact, scientists have put forward the concept of wormholes, wormholes are tunnels connecting two space-time, if we can find the existence of wormholes, then it only takes a short time to achieve space-time travel and truly get out of the galaxy. But at the current rate, it is still very difficult for humans to find impulses, what do you think about this situation?

The Milky Way is vast, and humans may never be able to get out of the Milky Way, because to get out of the Milky Way, we need to exceed the fastest speed in a vacuum, which is what we call the speed of light, and until now, we scientists have not found the boundaries of the Milky Way.

The Milky Way is measured in light-years and is in the shape of a swirl, with a diameter of 100,000 light-years. It would take 100,000 years to leave the Milky Way at the speed of light. If we could ride humans on a spaceship that moves with a beam of light, and we could reproduce on the spaceship and pass it on from generation to generation, it would take hundreds of thousands of generations before that grandson could leave the galaxy.

I think it's because the scope of the galaxy is so large that humans can't build faster-than-light spaceships, and even if they do, oxygen and supplies are big problems, so it's difficult for humans to fly out of the galaxy.

The diameter of the Milky Way is at least 105,000 light-years, and since the length of light-years is trillions of kilometers, there are 100 billion planets in the Milky Way, so humans will never be able to cross the Milky Way.

The diameter of the Milky Way has reached more than 150,000 light-years, and even more than 200,000 light-years. Even if it were to travel through the galaxy at the speed of light, it would take at least 200,000 years, and the life span of human beings is so short that it is completely impossible.

The Milky Way is about ten light-years away, and humans are currently unable to get out of the Milky Way, and may be able to do so in the future.

The Milky Way, in the astronomical data seen in the early years, said that the Milky Way has 100 billion sub-solar systems, and the interstellar medium is composed of dust and other materials, and has been said to be 200 billion planets and comets, in other words, the Milky Way has already doubled the number of stars, with an aperture of about 100,000 light-years. Their solar system is light-years away from the Milky Way's core, about 10,000 light-years away from the Milky Way's edge.

As far as their solar system is concerned, he is just an ordinary star system in the Milky Way, in addition to the eight planets, there is also the Kui Li Tamber asteroid belt, and there is also the Oort cloud, if the Oort cloud is the outermost star of the solar system, then there must be a space in the middle of the galaxy, so that the solar system is at least light-years longitude, in other words, the caliber of the solar system is about 3 light-years.

The American Voyager 1, which has been flying away for more than 40 years, sails at a rate of nearly 17 kilometers per second, and needs to trek more than 1.6 million kilometers in a day, which is more than 20 billion kilometers a year, and a light year is 94605000000000 kilometers, which is 300 years when it flies close to the Oort cloud, and it takes about tens of thousands of years until it flies out of the solar system. According to the current level of science and technology, it will definitely take more than 10,000 years for everyone to fly out of the solar system, and if you want to fly out of the galaxy, you don't have to think about it!

Naturally, science and technology are constantly moving forward, and perhaps in a few decades and hundreds of years, the level of progress in people's science and technology will be unimaginable to contemporary people. By then, the speed of light may have been used, but it feels like even if it were to fly out of the galaxy at the speed of light, it would take tens of thousands of years to fly to the edge of the galaxy. So far, people have not found a chemical that is faster than the speed of light, so I think it is impossible for humans to get rid of the galaxy.

As a galaxy with about 400 billion stars, the Milky Way is about 100,000 light-years in diameter and 12,000 light-years thick at the center. At present, the extent of the universe that can be observed by human beings is only about 93 billion light-buried years. There are about 13.7 billion bending light-years.

Not to mention the larger Milky Way.

The Milky Way is very big, to the extent that humans can't detect it, because humans can't detect how big the galaxy is, so they can't get out.

I have to say that the Hail, the Milky Way is really so big that it is boundless that we have not imagined it, and the reason why we can't get to the Milky Way is due to many factors, and the environment of outer space is something that I can't accept with my hungry sails.

Not to mention the Milky Way, humans can't even get out of the Yanqin Solar System. An airplane with a capacity of 1000km h has to fly non-stop, and it will take more than 2 million years to fly out of the solar system to seep into dates.

There aren't any galaxies right now! The whole universe is like wind and sand! The result: the wind blows away the dust! Slowly disappear completely!

The mathematics is really good, the traveler is 17 kilometers per second, 1.6 million kilometers per day, more than 20 billion kilometers per year, and the distance of a light year is about to fly for 300 years, it seems that your mathematics is taught by a physical education teacher.

So don't be too delusional about human beings!

How big is the Milky Way? This question has been plaguing the Even. According to modern scientific research, the Milky Way is mainly composed of a silver disk (including a spiral arm), a nuclear sphere, a galactic halo, and a peripheral silver crown.

The main body of the Milky Way is a silver disk, its appearance is a flat disk, most of the nebulae and stars in the Milky Way are concentrated in this flat disk, the diameter of the silver disk is about 80,000 100,000 light years, the middle part is thicker, the thickness is about 12,000 light years, and the surrounding area is gradually thinning, and only half of the thickness is left near the solar system.

Since the huge galaxy itself also rotates, the billions of planets in the silver disk rotate around the center of the galaxy, and the four spiral arms bend outward from the center of the silver disk, looking like a whirlpool in a rapid. The spiral arm in question is actually a concentration area of stars, dust, and interstellar gas, but this material-dense cantilever is not fixed, and the stars are always going in and out of the spiral arm, but they are able to basically "break even" in motion, so the shape of the spiral arm seems to be always uncertain.

The Milky Way** part is a nuclear sphere densely populated with stars, and the diameter of the nuclear sphere is between 10,000,000 light-years and slightly elliptical. Because a large number of nebulae and gas dust block the line of sight, scientists have very difficult astronomical observations of the direction of the nuclear sphere, so people still know little about him, but there is no doubt that the stars in the nuclear are very densely distributed.

The galactic halo is a huge envelope on the periphery of the galactic disk, consisting of sparse stars and an interstellar medium. It is at least 50 times larger than a silver disk, but its mass is only 1 10 times that of the Milky Way, which shows that its material density is very thin. In fact, globular clusters are the main substance in the galactic halo, with the exception of those extremely thin interstellar gases.

It wasn't until the mid-70s of the 20th century that scientists discovered the silver crown, which is located in the outermost part of the Milky Way, and its atmosphere can be more than 500,000 light-years away, which is larger than the main part of the Milky Way. However, there are basically no stars in the crown, and it is composed of extremely thin gas, so it is difficult to accurately determine the true extent of the crown.

The Milky Way is about 100,000 light-years in diameter, equivalent to 946,080,000,000 kilometers. The thickest part in the middle is about 3000-6500 light years.

By observing the distribution of stars in the Milky Way and extragalactic galaxies, astronomers know that the Milky Way is a disk-shaped structure with a somewhat bulging center, and that the Milky Way is far from the center of the Milky Way, on the Orion Arm of the Milky Way. Based on this information, the diameter of the Milky Way can be known by measuring the distance between the solar system and the galactic center, and the distance between the solar system and the edge of the Milky Way with its back to the galactic center.

Therefore, measuring the diameter of the Milky Way is equivalent to measuring the distance of distant stars. Ranging methods for stars usually include trigonometric parallax method, main-sequence star fitting method, and Cepheid variable star method. When measuring the diameter of the Milky Way, trigonometric parallax and Cepheid variable star methods are mainly relied upon.

To find the edge of the Milky Way, Disson's team conducted computer simulations of the formation of giant galaxies such as the Milky Way. Scientists have specifically looked for examples of two giant galaxies appearing side by side, such as the Milky Way and the nearest giant galaxy, Andromeda, because the gravitational pull of the two galaxies pulls each other. Simulations show that beyond the edge of the dark ring of a huge galaxy, the speed of neighboring small galaxies drops dramatically.

Using available telescope observations, Decision and colleagues found a similar decline in the speed of smaller galaxies near the Milky Way. Scientists say the phenomenon occurs about 950,000 light-years from the center of the Milky Way, which marks the location of the Milky Way's edge. The edge of the Milky Way is 35 times farther from the center of the Milky Way than the Sun is from the center of the Milky Way.

The book talks about the millions of stars in the star cluster in the Milky Way, they form a team, just like the police divide into several teams, some of the stars are far away from us, some are close to us, the brighter the star looks, the closer the star is to us, and the darker the light of the star looks, the farther away the star is from us. The most distant galaxies are more than 10 billion light-years away.

The moon is the first stopover for human beings to fly out of the earth and into space, and it is the only planetary key that human beings have left footprints outside the earth so far. The moon seems to be an inextinguishable "sky lantern". One of the poems in the book called "Heavenly Street" is very beautiful, as if it brings us into the artistic conception of the beautiful starry sky.

This book uses some modern things to form a sharp contrast with the previous reverie, showing the author's love for the sky and people's praise of the sky, this book has beautiful language and rich content, so that we can't let go when we read the book, if you have the opportunity, please also read this book, it will be of certain benefit to my future study and life, so please also take a look!