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There is, and there are many more. The sun is a star, it is composed of interstellar clouds or some nebulae like other celestial bodies, mainly by light nuclear fusion to shine and heat, according to scientists estimate that the sun can burn for 5 billion years, because the sun is a member of the milky way galaxy very close to the earth, so it can bring light and heat to the earth, and other stars like the sun are far away from the earth outside the galaxy, so the light that hits the earth is very small, and it takes a lot of time to transmit their light to the earth, not that it can't reach the earth, Most of the stars we can see with the naked eye at night are the light of a sun-like star hitting the Earth.
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The sun is a star, traditionally a star that can emit light on its own, (but it seems that more than stars shine on its own) There are many stars in the universe, and most of the stars we see are stars! The main substances of the sun are hydrogen and helium, and hydrogen fusion into helium emits a large amount of energy at the same time, and it can be burned for 6 billion years. After that, the sun will turn into a red giant.
To quote one: The universe is so big that there are all kinds of stars.
There is not only the "sun", but also the "earth" and "moon".
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The formation of the sun goes through three periods and five processes, namely the nebula period, the variable star period and the main sequence star period, and the five processes are the condensation contraction process, the fast gravitational contraction process, the slow gravitational contraction process, the flare process and the hydrogen combustion process.
The nucleus is the central nuclear reaction zone of the Sun. It occupies about 20 of the radius of the Sun and concentrates half of the Sun's mass. According to Einstein's mass-energy conversion relationship e=mc2, a hydrogen thermonuclear fusion with a mass of 600 million tons per second is converted into 100 million tons of helium, releasing an energy equivalent to 4 million tons of hydrogen, and according to the current estimate of the hydrogen content in the sun's interior, the sun has at least 5 billion years of normal life.
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Yes, but they are too far from Earth.
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I'm fainting you. First of all, the sun is a star, and there are so many stars in the universe, how much do you think there is a similarity between stars and stars? Again, 99% of the stars we see are stars! It is a long distance, so it looks small.
Then the main substances of the sun are hydrogen and helium. Ever heard of the hydrogen bomb? That's how the energy came.
Nuclear fusion of hydrogen and fission of helium are constantly taking place on the sun.
Legend has it that it can burn for 6 billion years.
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The sun was formed by the aggregation of hydrogen and helium from the original cosmic dust.
His energy comes from hydrogen fusion.
It can be burned for another 5 billion years.
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Most of the stars we see are stars?
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It is directly related to whether life may exist in other celestial bodiesBecause life can only exist on planets that revolve around stars and have the conditions to survive. Scientists have been trying to find something outside of our solar system, the "solar system".。We mentioned earlier the distance is from the star Barnard in the constellation Ophiuchus at a distance of light years.
After analyzing all the information about the star since 1938, the American astronomer Van der Kamp has always insisted that there are two planetary objects around it, half and more of the mass of Jupiter, and some believe that it is three planets instead of two. Of course, there are also many people who oppose Van der Kamp's views.
For a long time in the past, there was news that a star could have planets around it. By the 80s of the 20th century, such news was endless. However, some of them are believed to be only "fetuses" in the early stages of evolution, and some are still controversial for authenticity, while others are completely denied.
The Sun is a medium-sized star, which is very beneficial for the survival of us humans. There are thousands of stars in the night sky, as bright as the sun, but they are too far away from us. They look like highlights.
There are more stars in the distance. In the Milky Way, hundreds of millions of stars require astronomical telescopes to see, <>
Our galaxy is not the only one. In the dark and vast universe, there are likely to be hundreds of billions of galaxies, including billions of stars. The cosmic cosmic universe is unimaginable, and astronomers estimate that there are about 100 million planets in the universe.
The key is how to find them. Although the work is difficult because the stars are small and faint compared to the stars. Although they can sometimes reflect light from neighboring stars, they do not emit light.
Therefore, even with the most powerful and largest astronomical telescopes, it is impossible to see the distant stellar planet on Earth, a planet of ordinary size, that disappears in the light of his star. There is a 1000-watt light bulb at kilometer. All you have to do is find a speck of dust near this bulb and find other stars on Earth.
The practice is as simple as that, so astronomers try to try other methods. They think the best thing to do is to find them, which plays an important role in their perseverance.
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Personally, I don't think there is another solar system in the universe, which has no scientific basis, and so far, human beings have not been able to explore and know.
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I think it's very likely that there is another solar star in the universe; There is no scientific proof to show whether this claim is infallible or infallible.
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In fact, we don't know if there is another solar system out there, because our science and technology are not yet able to really go out of the solar system.
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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.
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Yes, the Sun is just one of many stars, and the stars we see at night are all stars.
Stars are spherical or spheroid-like objects made up of hot gas that emit light on their own. The closest star to Earth is the Sun. The second is to be in the constellation Centauri.
Proxima Centauri, which emits light to reach the Earth takes years. Sunny and moonless.
At night, the average person can see more than 3,000 stars with the naked eye at a certain location. With the help of telescopes, hundreds of thousands or even millions of them can be seen. Estimating the Milky Way.
There are about stars in the center.
1. 200 billion. Stars are not immobile, but because they are so far away from us, it is difficult to detect the changes in their position in the sky without the help of special tools and methods, so the ancients thought that they were fixed and immobile stars, and called them stars.
Stars also have their own life histories, from birth, growth, aging, and eventually death. They come in different sizes, colors, and evolutionary journeys. The star's connection to life is not only manifested in the fact that it provides light and heat.
In fact, the heavy atoms that make up planets and living matter were created during the explosions that occurred at the end of the lives of some stars.
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Brother planet - whether there is a second sun in the solar system.
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Yes......The sky full of stars is almost always the ...... of the sun
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The bar was deleted. It's too ruined for quality.
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The sky is full of sun, and every star is the sun.
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The shining star is the sun.
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There should be. Mathematicians say yes.
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There are so many stars, do you say there are!
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It cannot be said that the sun is just the name of the only star in our solar system that shines. The universe is huge, and there are other luminous stars in hundreds of billions of other systems, and they don't have to be called the sun. The solar system belongs to the Milky Way, and the Sun is only one of the stars in the Milky Way that can emit light.
However, there may be only one sun in the universe, because only this star in our solar system is called the sun hahaha.
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Yes, we just call the stars of the solar system the sun.
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No, there are countless stars like the sun.
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The super black hole may be the star that everyone is most interested in, and the closest black hole to Earth is V616 Monoceros, which is about 280 billion light-years apart, which is a long distance? Compared with the nearest Proxima Centauri 400 million light years, it should be a very good TV series, but in terms of the limits of the universe, it is a very close distance! Sylvia Eldita, a PhD student at Italy's National Research Laboratory, and her collaborators have found that the early universe is likely to be filled with super-black holes, and they were lucky enough to observe a dazzling light from the early universe, prompting everyone to get a glimpse of the first moments of space!
Before understanding the interesting objective facts discovered, Eldita and his collaborators will first lay a simple foreshadowing, because it is necessary to explain why such an unreachable beam of light can be seen, otherwise it cannot be expressed! Modern astronomy has several basic theories about the formation of black holes: How do super-black holes occur?
One is called a planetary super-black hole, in which a supermassive star collapses immediately at the end of the day or during the supernova eruption.
Another basic theory is that primordial black holes are created when the universe expands, and it is unlikely that planetary superblack holes will exceed the mass of the sun by tens of times, but primordial black holes have no limits. There is also a kind of star orbit that collapses into a quantum theoretical object with a mass of more than hundreds of thousands of suns, and this kind of star will begin to appear unstable due to the axial oscillation of the antiproton on the created trace caused by its core, and will collapse into a super black hole without forming a CF supernova. Contemporary astronomical observations have been millions of times the size of the sun, or even billions of times, and it is obvious that black holes were not that big in the early days of creation, so super black holes have a growth stage:
Accretion: After the advent of the super black hole, if there are other planets or interstellar dust and other components around it, then it will continue to accretion and develop, but the efficiency is relatively limited, after all, in the process of chemical explosion out of the super black hole, there will be full-band electromagnetic wave radiation due to shrinkage, if there are too many chemicals, it will often produce the Eddington limit value effect, that is, ultraviolet rays will also reduce the accretion rate, and then tend to an equilibrium. Consolidation:
The super-black hole merger is a short-term road, but it is not a small and medium-sized super-black hole that can be merged, and the super-black hole in the super-massive super-black hole and even the planet merger is carried out at the same time, and the super-black hole in the center of the solar system and the Andromeda galaxy after the merger may also be merged in the future.
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Because we have no actual evidence that it ever appeared. It's just theoretically proven, but that doesn't mean we've explored it.
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The reason why it did not appear at this stage is that some of the celestial bodies in the entire universe are different, and the changes in the whole system are also different, so it is impossible for it to appear in the same place as Wu Beiling.
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It may be because the current science and technology of human beings are relatively limited, and the existence of these phenomena in space has not been explored.
Scientists have found that Jupiter emits twice as much heat as it receives from the Sun, which means that Jupiter itself heats up, and its brightness is increasing year by year. At the same time, Jupiter is very big and constantly has to get the material thrown out by the solar system, and some people predict that in 3 billion years, Jupiter will have a mass similar to that of the Sun, and then it will become a luminous and hot star, that is, it will become the second sun.
So far, it hasn't been found.
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