Will there still be a sun in the universe?

<> for humans, the word "sun" refers exclusively to the yellow dwarf star 100 million kilometers away, because its light and heat nourish human civilization.

Therefore, from the perspective of human civilization, there is no doubt that there is only one "sun", but if we consider the number of suns in the universe from a purely scientific point of view, we can easily conclude that there are countless suns in the universe.

Because the sun is just a star after all, and this kind of celestial body that is emitted by hydrogen nuclear fusion from the collapse of nebula matter is innumerable in the universe, and it is no exaggeration to say that the stars in the universe are several orders of magnitude more than the sand on the earth.

There are 100 billion to 400 billion stars in our Milky Way, and at least 1 trillion galaxies in the observable universe with a radius of 46.5 billion light years, 1,000 billion 100 billion is the total number of basic stars in the observable universe, and the number is even larger when you take into account the newborn stars, and if you add the wider unobserved universe, the number of stars in the "whole universe" will go even higher.

In fact, just as planets are classified as rocky planets, gas planets, and ice giants, stars in the universe can also be divided into red dwarfs, orange dwarfs, yellow dwarfs, blue dwarfs, etc., and our sun belongs to yellow dwarfs.

Yellow dwarfs account for only 3% of the number of stars in the universe, while red dwarfs account for 73% or more, so our sun is heavier than most stars in the universe, but the more massive it is, the stronger the internal fusion reaction, and the consequence is that the lifetime is greatly reduced.

Astronomers have not seen an old red dwarf star for hundreds of millions of years since the birth of the universe, because the mass of the red dwarf is too small in the star, so the internal nuclear fusion reaction is very mild, which gives it a life of hundreds of billions of years as a main-sequence star, so in "The Wandering Earth", human beings will go to Proxima Centauri light years away, because Proxima Centauri is a very stable and long-lived red dwarf.

There will still be a sun in the universe, because there are many stars like the sun in the universe that are not counted, which should be said to be an astronomical common sense, and it can also be said to be endless.

In fact, it is very likely that there will be a sun in the universe, but there is only one sun next to the earth, and there will definitely be something that shines like the sun.

There may not be a second sun in the universe, but there are many stars like the sun that can provide us with energy, and they are all probably bigger and hotter than the sun.

The sun is just a star in the universe, there are countless stars like this in the universe, but only the sun is more special, although there is only one sun, it is definitely the only one in the universe.

The universe is infinite, there are countless other luminous stars, and the sun is not special. Somewhere unexplored by humans, there must be a sun-like star.

Of course, the star is the little sun.

Scientists have deduced that there is probably a sun in the universe.

There is no same leaf in the world that has the same texture, but nothing can not be a single existence, it should still exist, but the way it appears may change slightly. But the effect is the same.

Nice to your question, dear.

I want to say yes.

500 years ago, a Pole named Copernicus said that the sun was the center of the universe. Because of the propaganda of this "heliocentric theory", Galileo was found guilty and Bruno was burned to death. Because the Holy See says that the earth is the center of the universe.

200 years ago, a German (or British, so to speak) named Herschel said that the sun is not the center of the universe, and he was right. Until the beginning of the last century, people knew that the Sun was just an ordinary small star among the hundreds of billions of stars in the Milky Way, far from the center of the Milky Way. What the Sun does is carry all the large and small celestial bodies of the solar system (including the Earth) around the center of the Milky Way diligently.

And the Milky Way is just one of the hundreds of billions of galaxies in the universe.

The universe is a vast expanse of space that contains countless galaxies, planets, and stars. And among these many stars, the Sun is the one we are most familiar with. But is there only one sun in the universe?

In fact, the number of stars in the universe is very large, according to scientists' estimates, the number of stars in the universe may be as high as 100 billion billion. And most of these stars, like our sun, are made up of substances such as hydrogen and helium.

So why do we only see one sun? This is because we are on Earth and can only see a certain range of stars around us, and most of these stars are relatively distant from our Sun's pure swimming. In addition to this, the sun is also the only star on Earth, so we can only see one sun.

However, for other planets in the universe, they may be in a galaxy that allows for multiple stars. For example, a binary star system is made up of two stars, while a three-star or even a four-star system exists. These stars interact with each other to form unique planetary orbits and astronomical phenomena.

Overall, although we can only see one sun, there are countless stars in the universe that play different roles in the universe and make up a colorful cosmic scene.