There are several stars in the world. How many stars are there in the world

I'm coming to you! How much do you know about the starry sky.

About 3 after 23 zeros.

Peter of the American astronomer at Yale University. Fan. Dokun and Charlie, an astrophysicist at Harvard University. Conroy analyzed the intensity of light from galaxies and concluded that there were far more red dwarfs in galaxies than previously thought.

Previously, astronomers estimated that the number of stars in galaxies was about a trillion times that of 100 billion.

Fan. After observing distant galaxies in Hawaii with the help of electron astronomical telescopes, Dokun and his team found that the stars of these distant galaxies were many times or even dozens of times larger than previously thought, and that the size of 3 was followed by 23 zeros. For the sake of the image, Conroy said that there are about 50 trillion human cells in each person and about 6 billion people on the earth, and the product of the two is exactly 3 followed by 23 zeros.

In other words, the stars in the sky are comparable to the total number of human cells on earth.

You can check out mine below, I hope it helps you! Resources.

Countless pieces. There is no end to the universe and there is no end to the number of stars.

Countless don't believe you, count slowly.

There are 6,978 of them visible to the naked eye (5 of which are planets).

As for the entire universe, there are at least 1 billion extragalactic galaxies discovered by mankind, and they are still increasing, and the stars of each galaxy are as few as millions and as many as hundreds of billions, for example, the Virgo Nebula contains at least 2,500 galaxies no less than the Milky Way. In this way, it is estimated that the galaxy discovered by a single human contains at least hundreds of billions of stars. And all the time there are stars being born and others dying.

Even if I tell you an exact number now, it may be that by the time you finish reading it, the number will be invalid.

There are about 7,000 stars visible to the naked eye throughout the day, but only about 3,000 can be seen at the same time and in the same place. The Milky Way galaxy has about 100 billion to 200 billion stars. And the number of extragalactic galaxies discovered so far is also hundreds of billions.

Therefore, it is estimated that the landlord's question will never have an accurate answer.

There are no stars in the world, and most of the stars we see are stars.

People always say that there are too many stars in the sky, but in fact, all the stars that can be seen with the naked eye can still be counted. Astronomers divide the stars in the sky into 88 constellations according to their regions. Among them, the northern sky (bounded by the celestial equator) has 29 constellations; There are 46 constellations in the southern sky and 13 constellations in the north and south of the celestial equator.

As long as we have patience and count the stars in one constellation, we can count the stars that can be seen with the naked eye. According to the calculations of astronomers: 6 stars of magnitude 0; 14 stars of 1st magnitude; 46 stars of 2nd magnitude; 134 stars of 3rd magnitude; 458 stars of 4th magnitude; 1476 stars of 5th magnitude; 4,840 ...... of 6th magnitudeNo more than 7,000 in total.

If we arm our eyes with a telescope, the situation is different. Even with a minimal telescope, more than 50,000 stars can be seen. And the largest astronomical telescope in modern times can see at least 1 billion stars.

There are about 2,000 trillion stars in the sky.

The stars in the sky are innumerable. It stands to reason that there are more than a few hundred billion stars. It is possible to be more than a few kilometers. Countless times.

It should be Antares, which is more than 200 million times the size of the sun

Antares, Scorpio star. In ancient China, it was also known as the Great Fire, which belonged to the Antares of the Seven Nights of the Eastern Canglong and was used to determine the seasons. The fifteenth bright star of the whole day, it is a visual binary star, the main star is a visual star, etc., an M1I type red supergiant star with a luminosity of 6,000 times that of the Sun, and a companion star is a blue dwarf star with an angular distance of 3".

Composite stars and so on, absolute stars and so on. 440 light years away.

Antares' main star is actually a semi-regular variable star, with a brightness varying between the highest and the same, with a phototropic period of 48 years. The surface temperature is 3,600 K, the radius is 600 times that of the Sun, the surface area is 360,000 times that of the Sun, and the mass is only 25 times that of the Sun.

Antares is a combination of the two words anti and ares. Ares is the name of the god of war and Mars in Greek mythology, and the whole word means "rival of Mars". Because Antares is very similar in brightness and color to Mars, and the orbits of both stars are in the ecliptic, when Mars orbits Scorpio, two red stars shine in the sky, hence the name Antares.

In ancient Persia, Antares II, Aldebaran V, Xuanyuan XIV, and Beiluo Shimen were collectively called the Four Kings.

"July Flowing Fire" means that the great Mars is moving westward, and the weather will be cold. The modern astronomical name is "Scorpio". It is a red supergiant.

Antares and another blue dwarf star with an apparent magnitude of about 5th magnitude and an MK classification of about B4V form a visual binary star with an orbital period of the order of the thousand-year. Radio radiation from Antares Blue Companion was discovered in the seventies. The radio power of Antares Blue Companion was measured through the very large antenna array, and the radio power and flare of Antares Red Supergiant were also measured, and it was found that the radio source near the Blue Companion Star was actually located between the two daughter stars, which may be formed by the interaction of the two star winds.

Legend has it that more than 4,000 years ago, when China was on the throne, Huozheng set up an official position to observe this star.

Red, magnitude, about 424 light-years away. Its radius is 600 times that of the Sun, reaching 100 million kilometers. The surface temperature is 3,000 degrees, the volume is more than 200 million times that of the sun, and the mass is only 25 times that of the sun. So the density is only 1/8.6 million of the sun.

The recently discovered supermassive star, located in the Spider Nebula 165,000 light-years away from the Milky Way, has been observed as a young star about 1 million years old, about 265 times the mass of the Sun, with a surface temperature of 40,000 degrees Celsius and millions of times the brightness of the Sun.

The largest star ever discovered is only about 150 times the mass of the Sun.

I really don't know the one I said upstairs, and I need to learn it. The largest known star is, vy canis majoris, no Chinese name, it is a supergiant star located in the constellation Canis major, so we also call him Canis majoris vy, with a mass of 40 times that of the Sun and a diameter of 2,000 times that of the Sun. Antares, on the other hand, has 15 times the mass and 1,400 times the diameter of the Sun.

To add, there are still bigger than VY, but many can't be sure of the quality, for example, R136A1 may be a twin star, and some have a very short lifespan and no longer exist, so it doesn't count, such as a pistol star, which has long been ** now. So the answer I gave was VY, the largest known star.

The brighter the star, the smaller the magnitude. The magnitude measured on Earth is called the apparent magnitude; A magnitude that is attributed to a distance of 10 parsecs from the Earth is called an absolute magnitude. The magnitude of the same star measured by detection elements that are sensitive to different wavelength bands is generally not equal.

At present, one of the most common magnitude systems is the U (ultraviolet), B (blue), and V (yellow) trichromatic systems (see the photometric system "class=link> photometric systems), with b and v approaching photographic and visual magnitudes, respectively. The difference between the two is the commonly used color index. The Sun is of v=equal, the absolute visual magnitude is m=+, the chromatic index is b-v=, u-b=.

The color temperature can be determined by the color index. Stars that are close to people have a strong ability to emit light, so people see it brightly. However, even if a star with a strong ability to emit light is very far away, its brightness may not be as bright as that of a star that is tens of thousands of times worse than its ability to emit light.

For example, there is a star called Antares that is about 100 million times the size of the Sun and has about 50,000 times the ability to emit light, but because it is 410 light-years away from Earth, people can only see it as a bright star with a red light. If Antares were to be moved to the position of the sun, the light and heat it emitted would bake the earth into a large stone ball where everything had disappeared.

The first largest is Seamount II, which is light-year, followed by Canis Major VY, then WOH G64, and finally Cepheus VV

American astronomers have discovered the largest star in the universe.

The circumference is 1,500 times that of the sun.

According to foreign reports, the three red and bright stars recently discovered by American astronomers have been confirmed as the largest stars observed so far.

Astronomers' research notes that the three stars discovered are more than 1 billion kilometers in diameter and 1,500 times the circumference of the Sun. If these three stars take the Sun's place, they will be hot enough to "engulf" the Earth; Their outer space can even extend between the orbits of Jupiter and Saturn. Betelgeuse, the widely known super-large star and the largest star of the Orion Nebula, pales in comparison to these three large stars.

They are also slightly larger than the Pomegranate Star of the Herschel Cloud, the largest previously known star.

Using computer models, astronomers found that the temperature of the three red giants was about 5,600 degrees Fahrenheit (3,100 degrees Celsius), and that the hottest known star, the Sun, was over 90,000 degrees Fahrenheit (50,000 degrees Celsius). At the same time, researchers are working to calculate the volume of the three stars. Astronomer Marcy revealed that the three red giants are all nearing the end of their life cycles, with extremely low temperatures, extremely bright luminosity, and a large volume.

In addition, scientists now know the distance between the three red giants and the Earth, as well as the brightness of the stars.

There are 233 countries and regions in the world, of which 195 are sovereign states, 38 are regional, and 48 are in Asia.

A country is a region with complete sovereignty that has its own flag and its own territorial laws. As for the region, it is generally considered by the international community to be not a sovereign country, and the nature of the region is like Western Sahara, the British islands. Or like the more famous island of Reunion, next to Mauritius.

Mauritian animals.

It's an island in France, and these are all regions. And the island where Napoleon was put is also a region, and the United States, for example, also has a lot of overseas retail areas, which do not have independent sovereignty, but they generally have diplomatic rights. These are all regions, such as Gibraltar in the United Kingdom, although it is under Spain, but it also belongs to a region, these are not sovereign countries, but they generally have independent diplomacy with foreign countries.

We generally think that there is only one earth, that is, there is us on this one planet, and human beings thrive.

How many stars are there in the sky? It can only be said that there are countless too many to count, why do you say that? Because there are hundreds of billions of stars in the Milky Way alone, that is, the planets in the Milky Way that we usually see, all the stars we can see with the naked eye come from the Milky Way, and we can only see two extragalactic galaxies when we go to the southern hemisphere, only the southern hemisphere can see, and the northern hemisphere can not see these two extragalactic galaxies with astronomical telescopes, and it is a high-level astronomical telescope, staring at these two galaxies, and you can see these two pieces of information if you take pictures for a long time, in fact, it is the same as the Milky Way. That is, the Earth is just an ordinary planet in the Milky Way, and the same in the entire universe.

The Soviet Union did not have any sand on the earth, and there were many planets in the universe, so it can be seen that there are countless stars in the universe, and the stars we can see, because all of them come from the Milky Way, is about 1,000 stars.