There are several stars in the sky, and the requirements are clear, and you can not choose with coun

Well, it's complicated to say, it's hard to understand, so let's just say it, based on the long-term observations of astronomers and my experience; There are three stars in the sky! One is a star that emits light; One is a reflective but non-luminous [planet, comet, etc.]; A black hole that does not emit light or reflects light, but can absorb light. I hope it can help you, and I wish you progress in your studies!

The journal Nature gives the answer: about 3 followed by 23 zeros. For those who like to look up at the stars, counting the stars will be a lot of work.

Peter Van Dowkun, an astronomer at Yale University in the United States, and Charlie Conroy, an astrophysicist at Harvard University, analyzed the intensity of light from galaxies and 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. This theory is based on the work of Carl Sagan, an astronomer at Cornell University in the United States.

Sagan once wrote a best-selling book called "A Hundred Billions of Billions." He believes that there are 100 billion galaxies in the universe, and each galaxy has 100 billion stars. After observing distant galaxies in Hawaii with the help of electron telescopes, Van Dokun and his team found that the stars of these distant galaxies were many times or even dozens of times larger than previously thought.

We see 10 to 20 times as many red dwarfs as we do," Van Dokun said. Conroy said that 3 is followed by 23 zeros, which is an astronomical number even for astronomers who calculate distances in light years. To illustrate the size of the number 23 zeros after 3, Conroy said that each person has about 50 trillion human cells, and there are about 6 billion people on the earth, and the product of the two is exactly 23 zeros after 3.

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

You have as many stars as you have in your hair.

During the day, not a single star is visible in the sky.

I want to know this too. How far is your heaven from the Earth?

Astronomers don't know the question, your 'clear numbers' would you believe?

There are countless stars in the sky, but no more than 7,000 can be seen with the naked eye. And since people standing on Earth can only see half of the sky above their heads at most, we usually don't see many stars. The actual number of stars in the universe is indeed an astronomical number.

You just have to look at it with a telescope. The number of stars in a telescope is exponentially greater than what can be seen with the naked eye, and the larger the telescope used, the more stars can be seen.

The stars in the sky are bright and dark. As early as more than 2,000 years ago, astronomers lined up the stars according to their brightness, calling the brightest ones "1st magnitude stars", the lesser ones "2nd magnitude stars", and the 3rd magnitude stars "The faintest stars that can be seen by the naked eye are 6th magnitude stars."

In fact, in the entire sky, there are only 20 stars of the 1st magnitude, 46 stars of the 2nd magnitude, 134 stars of the 3rd magnitude, 458 stars of the 4th magnitude, 1476 stars of the 5th magnitude, and 4840 stars of the 6th magnitude. From the 1st to the 6th magnitude of the stars, the total is 6974.

Even plus. There are only 6,980 planets such as Mercury, Venus, Mars, Jupiter, and Saturn and the Sun.

For example, a small binoculars can see about 7 or 8 magnitude stars; 14th magnitude stars can be seen with a 120 (lens diameter of 120 mm) telescope manufactured by Nanjing Astronomical Instrument Factory; If you use the 5-meter telescope on Palomar Mountain in the United States, you can see 21 magnitude stars, which is about to be nearly 2 billion.

In fact, even if you use an astronomical telescope with a diameter of 5 meters to observe the stars, you can only see a drop in the ocean. The stars in the vast universe are actually innumerable.

The Milky Way, where our sun is located, is generally estimated to contain about 150 billion stars, and humans have observed dozens of such "galaxies" by current observation methods.

Everyone knows that what is "observed now" is far from the whole universe. Therefore, in this sense, the stars in the sky are indeed uncountable.

Summary. Hello.

The stars are in the sky and should be very high.

The author feels that it is low because the position of the author is very high.

The stars are in the sky, they should be very high, but why does the author think they are very low?

Hello stars in the sky and should be very high. The author feels that it is low because the position of the author is very high.

This is what the theory of relativity says. Usually we understand high and low as relative.

The stars in the sky are counts.

Grain, refers to round, granular. So the stars are the stars.

Example: Venus is the brightest star in the night sky.

The star in the sky should be a star, because it twinkles and twinkles.

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 total number of stars that can be seen with the naked eye is only about 6,000, and the number of stars seen through telescopes is much larger.

I remember reading an article that said: A child asked his parents how many stars there were in the sky, and the parent did not answer him directly, but grabbed a handful of very small grass seeds and scattered them on the ground, saying that there are as many stars in the sky as there are grass seeds on the ground, and it is not easy to count.

No one in the sky can give a specific answer, the universe is vast, there are countless planets, it is impossible to count them with the technology of the earth, there must be a specific answer, but that number is estimated with the number of the earth, it cannot be expressed.

If nothing else, there are countless shining planets, and no one should know the answer.

There are as many stars as there are in the sand on the ground.

Stars are unevenly distributed in the universe and are usually present in galaxies along with interstellar gas and dust. A typical galaxy has hundreds of billions of stars, and the number of galaxies in the observable universe is more than 100 billion (1011). In the past, it was believed that stars existed only in residual galaxies, but stars have also been found in intergalactic space.

Astronomers estimate that the universe has at least 700 (7,1022) stars.

No matter how many there are, I only want my own star!

In order to make it easier to identify the stars, the ancients divided the stars in the sky into 88 constellations according to their regions, and divided them into grades according to the brightness of each star: the brightest is the 1st magnitude star, followed by the 2nd magnitude star, the 3rd magnitude star......, the faintest star we can see with the naked eye is a 6th magnitude star.

If you count one constellation and then another, and count the stars in each constellation according to their rank, then in a few nights you can count the stars that can be seen in the whole sky: 20 stars of 1st magnitude, 46 stars of 2nd magnitude, 134 stars of 3rd magnitude, 458 stars of 4th magnitude, 1476 stars of 5th magnitude, and 4849 stars of 6th magnitude. At present, there are 6,974 stars that can be seen with the naked eye.

I know. If it is literal, then it is the search and transportation that goes upstairs. If it is really a number, then the number of stars in the world is 9,909,199999,99,99,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, If you don't believe me, count them.

There are 21 first-magnitude stars throughout the day.

Chinese name English name Constellation Visual magnitude Distance from Earth 1 Sirius Sirius Canis Major.

2 Old Man Canopus 803 South Gate II Rigel Kentaurus Centauri 4 Arcturus 305 Vega Lyra 25

6 Five rooks two capella Auriga 407 Betelgeuse seven rigel Orion 700

8 Procyon Canis Minor119 Achernar 8010 Hadar Centauri 33011 Altair Aquila 1612 Betelgeuse Orion 500 (long-period irregular variable star, etc., period 2000 days).

13 Aldebaran Taurus 6014 Cross II Acrux Southern Cross 45015 Antares Spica Virgo 35016 Antares Antares Scorpio 50017 North River Three Pollux Gemini 3518 North Fall Master Fomalhaut South Fish 2219 Tianjin Four Deneb Cygnus 180020 Cross Three Mimosa South Cross 50021 Regulus 14 Regulus Leo All the stars below the 70th magnitude can only be said to be infinite at the moment. It is not possible to find out with current scientific methods. However, there is one thing, the stars have life just like people, and new stars are born all the time, and old stars are dying out.

The number of stars in the sky is the same as all the good wishes in the world.