How many galaxies are there in the universe? How many galaxies are there in the universe?

Many, total galaxies, Milky Way, extragalactic galaxies, solar systems, Earth-Moon systems have generalized relationships.

Milky Way, extragalactic galaxies, solar system, Earth-Moon system.

to: Aquarius Gemini, Narcissus 2282:

The solar system and the Earth-Moon system are not galaxies.

There are countless galaxies in the universe.

1. There are about 125 billion galaxies observed by human beings, and each galaxy has hundreds to trillions of stars, and the Milky Way has about 40 billion planets. The so-called galaxy refers to the galaxy operating system composed of many star systems, interstellar dust and other materials, and the Milky Way is a galaxy that we are very familiar with.

2. In a galaxy, all the galaxies will orbit around the center of mass of the galaxy. In the universe, most galaxies contain an extremely large number of star systems, star clusters, and various nebulae. In the case of our Milky Way, it contains at least 150 billion galaxies, as well as a large number of other interstellar gases and interstellar dust, as well as black holes.

3. The solar system exists in the star system of the Milky Way, not only the solar system is in rotational motion, but the entire galaxy also has rotational motion, and the Milky Way will also be bound by gravity. When we look at the Milky Way with the help of instruments from Earth, it appears as a silvery-white ring.

There are about 5 billion extragalactic galaxies that have been discovered, and together with our own Milky Way, collectively known as total galaxies, represent all the cosmic ranges that humans have come into contact with so far. But the universe itself is infinite and expanding, so there should be an infinite number of extragalactic galaxies that we don't yet know. There is no exact number of how many galaxies there are in the universe, some say more than 80 billion, some say more than 100 billion, some say 1000 200 billion.

In 1995, astronomers used the Hubble Space Telescope to observe outer space in the north and estimated that there are about 80 billion galaxies in the universe. Three years later, in October 1998, observations were made in outer space in the south, and the number of galaxies in the universe was estimated to be 125 billion.

The reason why the figures for the two observations differ so much, explained by Harry Furguson of the American Space Telescope Science Institute, is due to the fact that the observation distance of outer space in the south is greater than that of outer space in the north.

From this, we can know that there are more galaxies in the universe than 125 billion, because the Hubble Space Telescope does not see the edge of the universe.

The Andromeda Galaxy is the closest galaxy to our own galaxy. It is a typical spiral galaxy, but larger than the Milky Way.

There are more than 100 billion galaxies in the universe. In the observable universe, the total number of galaxies may reach more than 100 billion (1011). Most galaxies are between 1,000 and 100,000 parsecs in diameter and in the order of millions of parsecs from each other.

Intergalactic space (the space that exists between galaxies) is filled with extremely thin plasma, with an average density of less than one atom per cubic meter. Most galaxies are organized into larger groups, known as groups or clusters, which in turn aggregate into larger superclusters. These larger groups, often referred to as large-scale fibrous structures, are distributed around huge holes in the universe.

The oldest galaxy.

In January 2012, an international astronomical research team led by American scientists also announced in the British journal Nature that the Hubble Space Telescope had discovered the oldest galaxy, which was born in the first 100 million years of the universe, and the newly discovered ancient galaxy was born in the first 200 million years of the universe, 100 million years longer than the former.

The galaxy was discovered by a team led by John Richard from the Lyon Observatory of the University of Lyon in France, who discovered the galaxy using the Hubble Space Telescope and the Spitzer Space Telescope in the United States, and then measured it at a distance of 12.8 billion light-years from Earth using instruments from the Keck Observatory in Hawaii, indicating that the galaxy was born at least 12.8 billion years ago.

Further study of the galaxy's spectrum revealed that the earliest stars in the galaxy were 100 million years old, leading researchers to conclude that the galaxy was born 100 million years ago. The results were published in the Monthly Notices of the Royal Astronomical Society.

More than 1 billion have been discovered, and the total number is currently unknown.

There are countless of them, and the universe we know now is just a speck of dust in the vast firmament, not to mention galaxies.

The question you asked, it is estimated that no one will give you a positive answer, at present, human understanding of the universe is still limited to the earth and the moon, and nothing else is understood. Even the sun didn't know what it was. Galaxies are a concept of regional division, and no one can say how big the universe is, so it is impossible to divide how many galaxies there are.

There are about hundreds of billions of galaxies in the universe, and on average each galaxy contains about 100 billion stars, and there are already tens of thousands of galaxies that have been observed! The more famous, close to our earth, are: the Big Magellanic Galaxy, the Small Magellanic Galaxy, and the Milky Way and so on.

Countless you can ask Megatron.

There are three main types of galaxies: elliptical galaxies, spiral galaxies, and irregular galaxies.

1. Elliptical galaxies: the shape is perfectly circular or oval, with a bright center and a darkening edge. According to the shape, it is divided into eight subtypes: E0 to E7.

The traditional image of elliptical galaxies is that after the initial eruption, the star-forming process has ended, leaving only the aging stars still shining, but occasionally a small number of stars still forming.

Usually, elliptical galaxies appear yellow or red, very different from spiral galaxies with hot, young stars on their spiral arms that emit a pale blue hue.

2. Spiral galaxy refers to a flattened galaxy formed by a large amount of gas, dust and hot and bright stars, with a spiral arm structure. Spiral galaxies are extragalactic galaxies with a spiral structure, denoted by s in Hubble's classification of galaxies.

The spiral shape of the spiral galaxy was first discovered in 1845 during the observation of the Canis galaxy M51.

3. Irregular galaxies refer to galaxies with irregular shapes, no obvious nuclei and spiral arms, no disk-like symmetrical structure or no rotational symmetry, which are represented by the letter IRR. Irregular galaxies are about 10,000,000 light-years in diameter. Of the brightest galaxies of the day, irregular galaxies account for only 5%.

According to scientists' estimates, the universe we live in is composed of nearly 100 billion galaxies.

First of all, our Earth is in the solar system, and the solar system is in the Milky Way. Galaxies like the Milky Way can reach as much as 100 billion in space.

Secondly, our space is still gradually expanding and expanding, and the nebula is also constantly producing perseverance. In other words, the galaxies we have estimated are not a fixed number, and they are still increasing.

At last. Our science and technology are still very backward, the exploration of space and outer space is very small, and the small solar system in the universe cannot be walked out of the human race, so this value is only an estimate, and the real exact value has to be explored and studied by our human beings from generation to generation.

Typical galaxies, ranging from dwarf galaxies with only tens of millions of stars to elliptical galaxies with trillions of stars, all orbit the center of mass. With the exception of individual stars and thin interstellar matter, most galaxies have a large number of star systems, star clusters, and a variety of different nebulae.

There are more than 100 billion galaxies in the universe. The largest galaxy has nearly 400 billion stars, and our galaxy, the bank system, can be determined to have 100 billion planets, and if you were to count the stars, just the Milky Way, one per second, you would have to spend 3,000 years to count.

Now humans.

BAI can already observe 125000000000000000000000000000000000000000000000000000000000000000000000000000000000000

The number of stars in the universe is the root.

Answer: Extrapolated from the number of stars in the Milky Way.

With current technology, we can't see every star in the Milky Way. The visible light telescope can observe stars within a radius of 5,000 light-years with the Sun as the center, while the radius of the Milky Way is 560,000 light-years, the Sun is about 10,000 light-years from the center of the Milky Way, and the farthest galaxy star is 90,000 light-years from the Sun. According to current extrapolation, there are about 400 billion stars in the Milky Way, with a plus/minus error of 50%, so the number of stars in the Milky Way is 200 billion 600 billion.

There are 100 billion 200 billion galaxies like the Milky Way in the universe. If the number of stars in the Milky Way is calculated at a minimum of 200 billion, the number of stars in the universe is 2 1022 4 1022, or 20 trillion 40 trillion billion.

There are at least 2 trillion galaxies in the universe, of which spiral galaxies account for 75% of the total galaxies, elliptical galaxies account for 15% of the total galaxies, and irregular galaxies account for 10% of the total galaxies.

If there are tens of trillions of celestial bodies in the universe, then there is still a long distance between the various celestial bodies, so you can imagine how big the universe is!