What is the relationship between the sun and the moon, and what is the relationship between the moon

The Sun and Moon are the solar system.

The two celestial bodies that have the greatest impact on the Earth. Now, let's look at these two celestial bodies separately to see how they are the same and what are the main differences.

The dimensions of the sun and moon.

In absolute terms, the sun and the moon.

The difference couldn't be greater. The diameter of the Sun is 1.4 million kilometers, while the diameter of the Moon is only 3,474 kilometers. In other words, the Sun is almost 400 times larger than the Moon. But the distance between the sun and the earth.

Exactly 400 times the distance between the moon and the earth, which creates an amazing coincidence.

From our point of view, the sun and moon appear to be almost the same size. That's why we can see the moon passing in front of the sun, almost obscuring our vision, the so-called solar eclipse.

Phenomenon. However, this is also just a coincidence. Gravitational interactions (tides) between the Moon and the Earth are causing the Moon to slowly move away from the Earth at a rate of centimeters per year.

In ancient times, the moon would have appeared much larger than the sun. And in the distant future, the moon will look much smaller. It's just that now, the sun and moon in our eyes happen to be the same size, which is a wonderful accident.

The gravitational pull of the Sun and Moon.

Looking back at our previous view, we know that the sun is much larger and has amazing mass than the moon. The mass of the Sun is about 27 million times that of the Moon. It is this gravitational interaction that makes the Earth revolve around the Sun.

And the tiny gravitational pull of the moon only causes the earth to shake slightly during its own motion.

When the Sun and Moon push the Earth from the same direction, their gravitational pull on the Earth increases, and the Earth's exposure to tidal action will be maximum; When the Sun and Moon push the Earth from opposite directions, their forces are slightly canceled out and the tidal effects on the Earth are minimal.

The rays of the sun and the moon.

There's actually a little lie here, because the sun is the only object in the solar system that really emits light. Due to its massive mass, solar energy melts hydrogen into helium within its core, which also produces heat and light. This light shines in the solar system, and the moon reflects it so that we can see it in the sky.

Astronomers use a term called apparent magnitude.

to measure the brightness of celestial bodies. Vega has an apparent magnitude of 0, and the faintest star visible to the naked eye is about magnitude. Venus can reach an apparent magnitude of magnitude, with the Full Moon and the Sun magnitude.

These numbers may not sound like much difference, but apparent magnitude is a logarithmic scale, which means that each value is twice as bright as the previous one, for example, an apparent magnitude 1 object is twice as bright as a magnitude 2 object, and so on.

So from our point of view, the sun is actually 450,000 times brighter than the moon.

The composition of the Sun and Moon.

That's another aspect we're going to discuss, how the Sun and the Moon are different. The sun is almost entirely composed of hydrogen and helium. However, the Moon was formed billions of years ago when a celestial body similar in size to Mars hit the Earth, and the lighter parts of the collision gathered together and began to move in orbit.

The Sun and Moon are the two most visible celestial bodies in the sky, and they have a close relationship with each other. Specifically:

1.The Moon orbits the Earth and also orbits the Earth. This will cause the moon to appear in different forms at different times, such as full moon, new moon, etc.

2.The sun is essential for all life on Earth because it provides light and heat energy. At the same time, the sun is also responsible for the phenomenon of solar eclipses.

3.At certain times, the Sun and Moon are in opposite positions, resulting in a solar or lunar eclipse.

In conclusion, the sun and moon play a very important role in nature, and there are many complex and magical connections between them.

The Sun is a star, while the Moon is a satellite.

The stars that orbit the stars are called planets, and the solar system has nine planets, which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Stars orbiting planets are called moons. They are all moving stars.

Other stars that don't move are stars, and the sun is stars, which shine on their own.

The moon revolves around the earth and revolves around the sun with the earth.

Relationship in the same solar system. Both the moon and the earth move regularly because of the gravitational pull of the sun.

1, the moon, commonly known as the moon, also known as Taiyin, Xuantu, Chanjuan, Yupan in ancient times, is the satellite of the earth, and is the fifth largest satellite in the solar system. The Moon is about a quarter of the diameter of the Earth and about one-eighty-one times the mass of the Earth.

2. The Moon is the most massive satellite, and its surface is covered with craters formed by the impact of small celestial bodies. The average distance between the Moon and the Earth is about 380,000 kilometers, which is about 30 times the diameter of the Earth.

Moon Male**

1. The Moon orbits the Earth in an elliptical orbit. The great circle of this orbital plane on the celestial sphere is called the "white path". The plane of the white channel does not coincide with the celestial equator, nor is it parallel to the plane of the ecliptic, and the spatial position is constantly changing. Cycle day.

2. The average inclination of the lunar orbit (white path) to the earth's orbit (ecliptic) is 5°09. But it is known that the Moon is gradually departing from the Earth at an average rate every year.

Sun Gong**

1. The sun revolves around the center of the Milky Way, and the period of revolution around the center of the Milky Way is about one year. There may be a huge black hole at the center of the Milky Way, but it is surrounded by stars, so it looks like a "silver disk".

2. These stars revolve around the "silver nucleus". Unlike the Earth's orbit, these stars get closer to the "silver nucleus" with each orbit.

Both the sun and the moon are celestial things, and both of them emit light. If there were no sun and moon, the world would be pitch black. During the day, we bask in the bright sunshine, and at night we enjoy the gentle moonlight, day after day, year after year.

In winter, the sun gives us infinite warmth; On summer nights, the moon brings us endless coolness. Between the Sun and the Moon, we have no reason to choose, as each of them brings well-being and benefits to humanity. However, the sun and the moon never rise and set at the same time, as if it had been agreed a long time ago, the sun is in charge of day, and the moon is night.

There is also a chance that the sun and the moon will appear in the sky at the same time, but it will be very short-lived. For example, at dusk, when the sun has just set, the afterglow of the sun is still sprinkled on the earth, but the moon is already quietly hanging in the air. At this time, the moon was lifeless, and it could not shine brightly, only when the sky was completely dark, and the moon gradually shone brighter, and as the night deepened, the moonlight became brighter and brighter.

Does the moon shine? The answer is "no". So, where does the light of the moon come from?

The wise old man tells us that the light of the moon also comes from the light of the sun. When the sun sets, there is only the moon in the sky, and the moon is reflected by the sun's irradiation, so the moon's'No matter how strong the light is, it can't be stronger than the sun.

Speaking of which, we are so grateful to the sun for its grace to us, even after it has set to accompany us, it still transmits its light to mankind through the moon. Sun, we love you, just like a song sings: "All things grow by the sun, rain and dew moisten the seedlings and grow", the world lacks the sun, then everything in the world will not be able to grow strongly.

After that, every time I look at the moon hanging high in the sky at night, I will also think of the sun that has blessed the earth.

They are a pair of sisters, the sun is the sister, the moon is the sister, and the sea is their mother.

The sun is beautiful: red face, long hair, and warmth. Mother of the sea praised her for being beautiful. Girl.

The moon is also very beautiful: white **, light steps, gentle and elegant. Mother Hai praised her for being a beautiful girl.

The sisters studied and played together every day, and they got along well. Mother Haihai is happy and relieved to have these two daughters.

Gradually, both the sun and the moon grew. One day, Mother Sea called them and said to them affectionately, "Children, you have all grown up, and it is time to do something for humanity."

When the sisters heard that they were leaving their mother, they all cried sadly: "Woo......Mom, we don't want to leave you! Mother Sea gently wiped away their tears and told them:

Don't be sad, child, there are many new and interesting things and things on the earth, which are guaranteed to make you happy, go ahead, you will not regret it. Mother Sea paused, and then continued, "In order that the earth may be bright forever, you will go one day and the other night."

All right? "Good! When the sisters heard that they wanted to contribute to humanity, they agreed.

But, mother, who goes during the day and who goes at night? "The moon asked. "Well, let's do it, whoever gets up early tomorrow morning will be the 'watchman' during the day, okay?

Both sisters agreed. Mother Sea finally convinced the sisters.

The next morning, before dawn, Sister Sun woke up from her mother's arms. So, the sun took on duty during the day. Lo and behold, the sun rises from the bosom of the mother of the sea, and everything is illuminated by the sun's rays, which is very comfortable.

The crowd cheered loudly, and the Sun Maiden was very happy and smiled happily.

Night fell, and the moon rose from the bosom of Mother Sea. Look, the earth is silver, and the flowers and plants are covered in dew, and they are enjoying themselves comfortably. The nocturnal people say:

The night was so bright, it was so easy for us to walk! The moon smiled sweetly when she heard this.

From then on, Sister Sun and Sister Moon continued to come out during the day and at night. They looked at each other and smiled and said happily, "We want to make the earth bright forever!" ”。