Whether the number of stars in the universe is increasing or decreasing

Decrease. Stars are born and die every moment in the universe, but as the raw material for planet formation in the universe decreases, hydrogen, there will be fewer and fewer new stars, and more and more stars will die (including dwarfs, neutron stars, and black holes).

Although the universe is expanding!

The stars are constantly increasing! But with the raw materials of the universe! Atomic weight is greatly reduced!

I don't think it's going to be a new star anymore! There will be fewer and fewer of them! But another way to put it!

The universe expands! The atomic weight will increase more and more! It's another mystery!

It's a reduce!

The universe is expanding.

But the density doesn't seem to have changed much.

Galaxies will increase.

Increase. When a big star finishes a supernova, it becomes a black hole or something like a white dwarf.

** nebulae can form new star galaxies.

There are stars in the universe all the time, and new stars are being generated!

Because as time goes on, there will be less and less hydrogen, and the number of stars will become less and less, and the number of stars will become less and less, so I think that there will be fewer and fewer stars in the universe.

The stars of the universe do not change, and according to the law of development between information and the planets, the matter of the universe is eternal, does not decrease and does not increase.

All matter in the universe is eternal, all of it is constant, so according to the current law of development, it will not increase or decrease.

There will be more and more because the universe is changing all the time, and new stars will be formed in the microscopic particles of dust and gas in the universe.

We can imagine that if we lit a candle in a dark room, every corner of the room would be filled with candle flames at once. If the candle were to be taken to the dark indoor basketball court, it would be almost impossible to light up the far corners. If we move this candle to a more limb silver football field, it will be difficult for everyone in the stands to distinguish the weak color of the core candle flame of the football field.

In fact, as early as 1823, the French scientist Obos put forward the basic theory that space is pitch black, Obos emphasized that if the universe is stable and infinite, and there are many planets evenly distributed, then no matter where we look in the sky, this light will eventually reach the earth, and there will be no dark areas between the stars.

This idea of O'Bos is called the "O'Bos paradox", often called a paradox, because it is believed that everyone in the academic community at that time firmly believed that the universe was static data, and even Newton set up a static data universe model when he released the general theory of relativity, thinking that the universe is a relatively limited and boundless static data curved closed body. It was not until 1929 that the well-known scientist Hubble discovered that distant galaxies have redshifts, and the speed spacing of degeneration is positively correlated, so as to establish Hubble's law, and then verify that our universe is a dynamic universe that continues to expand, which was caused by an explosion more than 10 billion light years ago.

In this way, there is a beginning in the universe, indicating that under the limited age and red shift, we will not be able to see all the universe, and the continuous surge of the universe will make the light source more and more away from everyone, which means that the light source outside the observable range will never be where everyone is, for example, everyone lights up a lamp in a dark room, the light can light up every corner, if the room can expand infinitely, then even if there are tens of millions of lamps, it is impossible to light up the entire space, That's why it's pitch black in outer space.

Because space is a vacuum environment, there is no diffuse reflection of light, so space is still pitch black.

Because the light of the stars cannot reach space at all, space can only be pitch black.

Because there aren't too many particles in space that can reflect sunlight, we can't see light passing through space.

An astronomy team at the Australian National University concluded through calculations that there are 70,000,000,000,000,000,000,000,000 (7 after 22 0, 7 trillion trillions) stars in the universe. Such a huge number could be more than all the grains of sand on all the deserts and beaches on the planet.

The team demarcated a region of the sky and counted the brightness of about 10,000 galaxies in between, to determine the number of stars in them. Such a statistical method avoids the tedious process of counting each star. The number of stars in the entire universe is then obtained by multiplying the number of stars in the entire universe by multiplying the number of stars in the entire sky and this strip-shaped region.

The team used two of the world's most powerful astronomical telescopes for the study, one at the Anglo-Australian Observatory in northern New South Wales and the other in the Canary Islands. At the same time, they say that the number of stars now counted is the number of stars included in the universe that can be seen by modern astronomical telescopes. In fact, there may be more stars in the universe, even infinite.

The universe is so large that even the light on the other side of the universe has not yet reached the earth, so it is not yet possible to measure the detailed data. On the question of whether there is other intelligent life in such a vast universe, the researchers said, "Seven trillions is a huge number. The existence of intelligent life is inevitable.

Trouble, thanks!

If we call luminous stars stars, and non-luminous stars are called planets, including cosmic dark matter, I think there should be more planets than stars. I think it must be that the rate of combustion is much greater than the rate of energy accumulation (saving), and if a star can burn (nuclear reaction) for tens of billions of years, then it will take hundreds of billions of years for it to form (before burning). But why we think there are many stars, the reason is also very simple, in the depths of the universe we can only see stars.

Note: (I don't believe in the grand ** theory of the universe; The origin of the universe is not logical! ）

We see seawater evaporating in tropical oceans, and we say that there will be less and less water; When we are in tropical rain, we will say that there will be more and more water; If we observe a redshift today, we say that the universe is expanding, and tomorrow we may see that the universe is shrinking--- the universe is infinite, and infinite has no boundaries; Without a center, it is likely that (visible galaxies) bright matter is expanding, invisible dark matter is shrinking, in order to make it easier to understand that we see the universe as the earth, water vapor clouds are compared to visible luminous galaxies, rain is compared to invisible dark matter in the universe, we see water vapor rising clouds in the tropical oceans, we say that the universe is expanding, in fact, water flows back to the tropical ocean under our feet through other channels.

There must be more invisible dark matter in the universe (including planets) than visible stars.

There are many stars. In the Milky Way, there are about 150 billion to 200 billion stars.

If we talk about planets, there are requirements. It is necessary to have a certain volume and mass, etc. Like Pluto, it cannot be called a planet, but an asteroid or a dwarf planet. Many of the gases and dust in the universe can only be called asteroids.

There are many planets, one in the solar system, eight in the solar system.

It is estimated that there are about 400 billion stars in the Milky Way, with an error of 50% (i.e., between 200 billion and 600 billion), and there are 100 billion 200 billion galaxies like the Milky Way in the universe. Taking the minimum number of stars in the Milky Way as 200 billion, the number of stars in the universe is 2 1022 4 1022, that is, 20 trillion 40 trillion billion.

Do you know how much hair a donkey has?

At present, the farthest vision of human beings can only extend to the edge of the universe, and whether there is a universe or parallel universe similar to ours beyond the edge of the universe, and if there is a parallel universe system outside the parallel universe, human beings may not be able to solve this mystery so far or in the future. The largest known star. Let's say there are 10 billion people on the planet.

It is known that the sun is 1 million times larger than the earth, and the big dog vy is 8 billion times larger than the sun. That's 800 million people. The earth is like a bacterium.

In order to know the size of the largest star in the known universe, we can first know the closest star to Earth, the Sun. The average distance between the Earth and the Moon is only 380,000 kilometers. In terms of volume, the Sun can hold nearly 1.3 million Earths.

It can be seen that the size of the sun is quite large. However, the size of the Sun is insignificant compared to the largest known stars in the universe. Currently, the largest star discovered is UY Shield, a red giant located about 9,500 light-years from Earth.

It has been calculated that the diameter of UY is up to 100 million kilometers, which is equivalent to 1,708 times that of the sun. You know, the average distance from the Earth to the Sun is about 100 million kilometers, which is only one-sixteenth the diameter of this red giant.

In terms of volume, the UY shield can hold nearly 5 billion suns and 6,500 trillion earths. Given its enormous size, it takes hours for light to travel around the equator of the UY shield and seconds to travel around the equator of the Sun. If it were a spacecraft with a speed of kilometers per second, it would take about 30 years to fly around the UY equator.

If it is an airplane with a speed of 900 kilometers per hour, this time is about 946. As a giant red giant, the UY shield has a hard time binding matter to its surface. The star may have lost more than half of its mass since its birth.

Due to its sheer size, S.H.I.E.L.D.'s UY has a fast nuclear fusion reaction, and it quickly runs out of nuclear reaction fuel. It is estimated to have a lifespan of only a few tens of millions of years (the estimated lifespan of the Sun is about 10 billion years). At the end of its evolution, it violently** becomes a supernova, and its center collapses into a black hole.

Shield seat UY.

UY is a red supergiant located in the constellation Shield. It is considered one of the largest known stars and at the same time a pulsating variable star. Its radius is estimated to be 1,708 solar radii (100 million kilometers, about astronomical units), so it is nearly 5 billion times the size of the Sun.

It is about 2,900 parsecs (about 9,500 light-years) from Earth. If it is placed in the position of the Sun, its photosphere will at least engulf Jupiter's orbit and may approach Saturn's orbit. The largest known star is Stevenson 2-18 (2.9 billion km) located in the Milky Way.

It's the sun. The Sun is the largest star in the Milky Way and the largest known in the universe, hundreds of times the size of the Earth.

At present, Stevenson-218 (the author will not write) is not the Shield Uy, the largest star before 2016 was Canis Major, but later the calculation method was improved, and then the largest is the Shield Uy, (in fact, people have found the Shield Vy before, but people's calculation methods are not accurate, it seems that Canis Major VY is bigger than the Shield Uy, but in fact the Shield Vy is larger than the Shield Y Major) and then found the Stitch tattoo -218 He is bigger than the Shield Y again, But we don't know if there will be bigger stars in the future, but there will be, after all, we don't have a W-type star yet.

Currently, the largest star ever discovered is the shield UY, which is 12,000 times larger than the Sun. It takes more than 9 hours for light to orbit this star, which is much larger than eight. It takes half a minute for sunlight to reach the ground.