The solar system, just a few planets, why do you look at the sky at night, there are so many stars

There are more than 6,000 stars in the entire sky that we can see with the naked eye. The ancients divided the brightness of stars into six grades.

Most of these more than 6,000 stars are stars, both stars and the sun, and only 5 planets in the solar system close to the sun can be seen with the naked eye.

So the stars are mainly stars outside the solar system. We don't even see a single star in the planetary belt between Jupiter and Mars.

The vast majority of what you see are stars, not planets. That is, most of the stars you see are celestial bodies outside the solar system. The Andromeda extragalactic galaxy M31 and the Great, Small Magellanic galaxies and even extragalactic objects.

There are only 5 planets visible to the naked eye, namely Mercury, Venus, Mars, Jupiter, and Saturn.

Yes, your addition is correct, the human eye can see more than 6,000 stars, most of which are stars outside the solar system (they shine on their own, some are bigger than the sun, hotter, but the distance is too far, so it looks like just stars).

These stars are basically immobile all year round, and the "walking" stars that move in the background of the starry sky are called planets. The planets that we can see with the naked eye are all in the solar system, and they can only shine by reflecting the sun's light.

Actually, it's not just at night, it's also during the day, it's just that the sunlight is too strong for you to see

Khan, even the stars outside the galaxy ... The planets of the solar system move in the sky according to their trajectories, but the other stars only revolve around Polaris, because they are almost stationary relative to the Earth, so there is only the effect of the Earth's rotation.

Planets generally don't shine, and most of the stars in this sky are stars. Hundreds of millions of stars such as the Sky Wolf, the Weaver Girl, and the Cowherd are the light source.

It's like it's just an asteroid reflecting the sun's rays.

There are many galaxies in the universe, not just the solar system, most of what we see are stars.

Planets don't emit light, all you see are stars that do shine (the sun is the star).

It is the light of the stars of the universe.

Most of the stars you see are stars.

Don't be short-sighted. The Milky Way is very big. There are much bigger ones than the Milky Way.

There are many stars in the universe, but it does not prevent us from making our sky black at night, because of the star city in the universe.

It's so far away that if you want to say that the intensity of the light doesn't affect the brightness of the light, that's for sure. But there is another very important factor, which is that the distance is too far, and no matter how strong the light is, you will dissipate. <>

in the solar system. The only one that actively emits light is the Broad Calendar Sun, the only star in the entire solar system that emits its own light.

Then it spreads to various planets in the form of light, and the closer the planet is to the sun, the more heat it is exposed to, the greater the temperature difference between day and night, and then the change of the four seasons of the year may be greater, and then another factor that affects the change of heat is the distance from the sun. Because such a factor can affect the temperature we feel, and it affects the brightness we feel. <>

Many stars in the universe are meteorites or asteroids, most of which are not celestial bodies within the solar system, and some celestial bodies within the solar system are also exposed to sunlight.

The light reflected by the illumination, and then we can see that it is bright, but we can only see that it is bright, and it itself will shine when it is illuminated by the sun, and it will not produce heat itself, and naturally it will not shine. Therefore, the intensity of the light is relatively weak, and it is naturally impossible to see clearly when the distance is far away, and there are many small stars in the sky that are relatively blurry. <>

There are also some stars in the universe that are relatively bright, such as the Big Dipper.

That is, the spoon star, these 7 stars themselves are the same regardless of the relative position of the season, and then they have the role of guiding the direction, these 7 stars are not in the solar system, it is another small galaxy.

, even another galaxy, because the 7 stars themselves will glow on their own. Because they are stars themselves, but they are so far away from the earth that we can only see their light, and not be illuminated.

Because the stars themselves do not shine, the reason why the stars look twinkle is because they borrow the light of the sun, so the sky is still dark.

Because these stars are so far away from the Earth, the light they occur is not enough to illuminate the sky, so the sky is still dark at night.

Because there are many stars that do not shine, and there are not many galaxies that shine in the entire universe, it is the light reflected by people in other simple people to these stars, so that they look bright and shining.

Chen's Universe Model (Chinese Taiji Universe Model): Because in terms of the size of the universe, the stars are pitifully small.

First of all, to be sure, no. Most of the stars we can see in the night sky are stars outside the solar system that are similar to or even much larger than the sun, and the Andromeda Nebula that can be seen in the Northern Hemisphere is even more located outside the Milky Way. Only a handful of the stars we see are located within the solar system, and these can be counted.

In addition to the Sun and the Moon, two celestial bodies that can be significantly distinguished, Mercury, Venus, Mars, Jupiter, and Saturn are also visible from Earth. Among them, Mercury and Venus, since their orbits are within the Earth's orbit, should always appear to the Earth near the Sun.

In other words, we can only see these two planets in the east in the morning or west in the afternoon. Whereas, Mars, Jupiter, and Saturn are outside the Earth's orbit, we can see them anywhere near the ecliptic. These five planets are celestial bodies within the solar system that humans can see with the naked eye.

Although Uranus and Neptune are also in the solar system, they are so far away from the Earth that their brightness is below the limit of what the naked eye can see, so humans cannot see them without a telescope. Uranus and Neptune were discovered only after the birth of telescopes and celestial mechanics.

In addition, some comets that return periodically can also be seen by humans, which are also objects within the solar system. But since comets always have a tail facing away from the sun, they can still be distinguished if you look closely.

Other stars that can normally be seen are all outside the solar system, and the distance between us is measured in light years. Since their mass and brightness are generally greater than those of the sun, we can still see the light they emit even from such a distance. These rays of light have traveled in the universe for years, decades, or even hundreds of years before they reach our eyes, and the light of the Andromeda Galaxy has traveled for a full 2.2 million years, which means that we are seeing the Andromeda Galaxy 2.2 million years ago.

When this light came out, our ancestors were still living a life of drinking blood, constantly overcoming obstacles on the way of migration, and when it reached the earth, we could already observe it and study it with advanced equipment. What do you think? Anything you find amazing?

No. Because most of the stars seen at night are stars and galaxies, and only one sun in the solar system is a star, the stars seen at night do not exist in a solar system.

Yes, because they are a whole, they are attracted to each other, they are very good relationships, and they are very friendly to each other.

Planets, although they also move in the sky and move much faster than stars, are not visible to our naked eyes. The bright spot that moves should be an artificial Earth satellite. When it is illuminated by the sun and the air is clean, it is visible, with a noticeable displacement, and at a uniform velocity.

It's unlikely, if the plane is at high altitude, it generally doesn't turn on the forward or downward headlights (I don't know what those headlights are called), they only turn on when they're close to the ground. The aircraft flying at high altitude only turned on the night lights, a total of 3, respectively at the top of the two wings and the tail, and the colors are different, respectively: left red, right green, and back white.

If you can't hear the sound of the plane, it means that the plane is flying very high, and you can't see the night lights.

Most of the stars that can be seen at night are stars, and there are a few planets in our solar system, such as Venus, Mercury, and Mars.

There are many types of stars in the universe, but the sun is not the only one.

Stars are all gaseous planets. On clear and moonless nights and in areas without light pollution, the average person can see more than 6,000 stars with the naked eye, and with the help of telescopes, hundreds of thousands or even millions of stars can be seen. It is estimated that there are about 1500-400 billion stars in the Milky Way, and the Sun, the host star of our solar system, is a star.

Stars emit light on a similar principle to our sun, with most of the energy released by hydrogen fusion into helium nuclei, and some energy released by helium fusion. It's just because they're so far away from us that they look like gentle little stars, but in fact they're much bigger than the sun.

The planets look bright because they reflect the sun's light, but they only take up the light that is close to us, and they seem to be brighter than the stars.

Stars are spherical luminous plasmas held together by gravity, and the Sun is the closest star to Earth. Almost all of the other stars that can be seen on Earth at night are within the Milky Way, but due to their distance, these stars appear to be just fixed points of light.

The sun is the light and heat of the earth**, and when we face the starry sky at night, we only see a little bit of sparkling light, but we don't know that some of the stars also emit light and heat.

A white dwarf star numbered H1504+65 (a dense remnant of a dead star) has a surface temperature of up to 200,000 degrees Celsius, 30 times the surface temperature of the Sun.

Hello, in the usual case du, all the stars we see are zhi

stellar, in these stellar dao

Note that I am talking about the usual, of course, we can occasionally see planets, although the planets themselves cannot emit light, but they can reflect the light from the sun, and sometimes, we can also see other things, such as: meteors, comets, Chang Gung stars (sometimes Venus appears at dusk by the sea, if it appears in the morning, it is called "morning stars"), etc., these celestial bodies are easily distinguishable from ordinary stars, as for Halley's Comet as a friend saidWe have the possibility of seeing it in the night sky, but it is very rare, because as we all know, Halley's Comet is a long-period comet, its next appearance is 2071, Mercury is also very rare, usually Mercury is almost impossible to see, the best time to observe Mercury is when there is a total solar eclipse or Mercury transit, otherwise, Copernicus will not regret for life because he did not see Mercury, therefore, the stars in the night sky are not only stars and planets. Hope to adopt, thank you!

Both. Most of them are stars, and sometimes before the sun comes out in the morning, the bright planets of the solar system, namely Mercury, Venus, Mars, Jupiter, Saturn, can be seen. Rarely, bright comets such as Halley's Comet can also be seen.

Of course, the stars and planets do not emit light.

Only stars shine.

So it's a star.

No, what we have seen, most of them are in the Milky Way, only a few exist in the solar system, we generally look at the Milky Way, the stars are reflected so that people can see the brightness of the stars is often expressed by magnitude. The brighter the star, the smaller the magnitude. The magnitude measured on Earth is called the apparent magnitude; A magnitude that is attributed to a distance of 10 parsecs from the Earth is called an absolute magnitude.

The magnitude of the same star measured by detection elements that are sensitive to different wavelength bands is generally not equal. One of the most versatile magnitude systems is the U (ultraviolet), B (blue), and V (yellow) trichromatic systems (see Photometric Systems'"class=link> metering system); b and v are close to photographic and visual magnitudes, respectively. The difference between the two is the commonly used color index.

The Sun is of v=equal, the absolute visual magnitude is m=+, the chromatic index is b-v=, u-b=. The color temperature can be determined by the color index.

A star that is close to people has a strong ability to emit light, so people will light up when they see it. However, even if a star is quite capable of emitting light, if it is very far away, then its brightness may not be as bright as that of a star that is tens of thousands of times less capable of emitting light.

Suppose there is a star called Antares that is about 100 million times the size of the Sun and is about 50,000 times more luminous than the Sun, but because it is 410 light-years away from the Earth, one can only see it as a bright star with a red glow. If Antares were to be moved to the position of the sun, the light and heat it emitted would bake the earth into a large stone ball where everything had disappeared.