How many stars are there in the sky

Is it a popular science problem? If you look at it with the naked eye, you can see more than 6,000 of them, but half of them are in the other hemisphere, so you can see about 3,000 of them with the naked eye at night.

How many stars are in the sky.

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 use a telescope, the situation is different, and even with a small astronomical telescope, more than 50,000 stars can be seen. The largest modern astronomical telescope can see more than 1 billion stars. In fact, the number of stars in the sky is much more than that.

The universe is endless, and what modern astronomers see is nothing more than a tiny, tiny part of the universe.

The exact number is not so easy to say. The number of stars visible to the naked eye throughout the day is about 6,000. If you ask what humans see with instruments, then you have to estimate it like this:

The galaxy we inhabit has more than 200 billion stars, and there are hundreds of billions of such galaxies in the currently visible universe. So, the most conservative estimate is that the number of stars should be on the order of 10 to the 22nd power.

Second: God knows

I suggest you listen to it Let me tell you softly This song Don't ask me how high the sun is I'll tell you how real I am Don't ask me how many stars there are I'll tell you A lot ... A lot...

The first thing to make clear is that stars are stars.

The largest group of stars, dust, and gas is called a galaxy. A typical galaxy contains about 100 billion stars and may be about 100,000 light-years in diameter. Galaxies are the basic units of the universe, and there are 100 billion to 11 trillion galaxies in the universe, and they are very far apart.

I said there were 155,700 of them, but I don't believe you should count them. Hehe.

I can't count them, and the data given by scientists is just speculation, and new stars are born every moment, how do you say you can count them?

As much as your hair, count it yourself!

There are 100 billion in our galaxy, and the universe has not found a margin, who can count it, although it is countable.

It's not how much you know, it's how much you know, what you have in your heart, what's yours.

How much do you know about the starry sky.

About 3 after 23 zeros.

Peter of the American astronomer at Yale University. Fan. Orange Pants Quint and Harvard astrophysicist Charlie. Conroy's analysis of the pure bend of light intensity from galaxies concluded that the number of galactic red dwarfs was far greater than previously thought.

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

Fan. Dokun and his team discovered in Hawaii that the stars of distant galaxies were many times or even dozens of times larger than previously thought, with a size of 3 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.

Hope it helps!

As the saying goes, "There are too many stars in the sky." "In fact, the stars in the sky that can be seen with the naked eye can be counted completely.

In 1928, the International Astronomical Union announced that the entire sky was divided into 88 constellations, including 29 constellations in the northern sky, 12 constellations in the zodiacal constellations, and 47 constellations in the southern celestial constellations. The big constellations include long snakes, virgins, great bears, whales, and martial immortals; The small ones are the Southern Cross, the Pony, and the Sky Arrow; According to the degree of brightness of the stars, they are divided into first-class stars to sixth-magnitude stars. The faintest star that can be seen with the naked eye is a sixth-magnitude star.

As far as stars are concerned, there are about 20 stars above the first magnitude, 46 stars of the second magnitude, 134 stars of the third magnitude, 458 stars of the fourth magnitude, 1,478 stars of the fifth magnitude, and 4,840 stars of the sixth magnitude. So, there are about 7,000 stars visible to the naked eye in the entire sky, but only about 3,000 can be seen at the same time at night, and the other half is below the horizon. Stars below the sixth magnitude can only be seen with a telescope.

With the largest telescope available, at least more than 1 billion stars can be seen.

But in reality, there are far more stars in the sky than that, and the Milky Way alone is made up of 150 billion stars.

The stars in the sky are the same as the sand.

How much do you know about the stars in the sky? At the International Astronomical Union Congress held in Sydney on the 22nd, Australian astronomers said that there are about 700 trillion stars in the entire visible universe, and said that this is "the most accurate observation data so far".

According to Simon Driver, Ph.D. from the School of Astronomy and Astrophysics at the Australian National University, his research team used the most powerful astronomical telescope in the world to select a region of the galaxy in the vicinity of the Earth for local observations, and then calculated this number. If you want to literally represent this number, you need to add 22 "0s" after the "7".

That's more than the amount of sand on all the deserts and beaches on the planet combined, Driver said. But the naked eye can only observe about 5,000 stars, including stars and parts of the planets of the solar system, even in the darkest places on Earth. On the illuminated streets of the city, only about 100 stars can be seen with the naked eye.

Because it is difficult to see planets and their moons outside the solar system with the help of astronomical telescopes, scientists often only count the number of stars in the universe.

Explaining the methodology, he said, they first chose a small area of the universe for observation, measured the brightness of all the galaxies in that area, and calculated the number of stars contained in all galaxies. This calculation is then used to extrapolate the number of stars in the entire visible universe. He said that this is only the result of observations and speculations based on the capabilities of astronomical telescopes, and the actual number may be much higher.

How much hair do you have, multiply it by eight is the number of stars, and if you can't answer it, then please don't ask such stupid questions.

In total, there are about 6,000 stars and planets projected on the celestial sphere.

It can be said that there are countless of them, because the stars in the universe are composed all the time.