What is the difference between the moon and the sun?

The sun is hot. The moon is cold!

The Sun and the Moon are the two celestial bodies in the solar system 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 difference between the size of the Sun and the Moon could not 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 is 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. This is 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 measure the brightness of celestial objects using a measurement called apparent magnitude. 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.

What is the difference between the sun and the moon, let's find out together.

The difference between the two is:

First, the diameter is different.

The diameter of the Sun is about 1,392,000 kilometers, which is 109 times the diameter of the Earth.

The moon is kilometers in diameter.

Second, the classification is different.

The Sun belongs to the stars, while the Moon belongs to the moons.

Third, the rotation period is different.

The sun is a cycle of heaven, and the moon is a cycle of heaven.

Fourth, the transit center is different.

The Sun orbits the center of the Milky Way, while the Moon orbits the Earth in an elliptical orbit.

First, the diameter is different.

1. Sun: The diameter of the sun is about 1,392,000 kilometers (kilometers, equivalent to 109 times the diameter of the earth.

2. Moon: kilometers in diameter.

Second, the classification is different.

1. Sun: star.

2. Moon: Satellite.

Third, the rotation period is different.

1. Sun: Heaven.

2. Moon: day.

Fourth, the transit center is different.

1. Sun: 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".

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

2. Moon: 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. 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.

Introduction to the SunThe Sun is the central body of the solar system and belongs to the star, with a diameter of about 1,392,000 kilometers and a mass of 2,100 kilograms. The rotation period of the Sun is Days, which is the center of the Milky Way that revolves around the Sun, and the rotation period is years. The life span of the sun is about 10 billion years, it is currently about 100 million years old, and in about 50 to 6 billion years, the hydrogen in the sun will be almost completely depleted.

The structure of the sun is mainly composed of the core, radiation region, troposphere, photosphere, chromosphere dust and coronal layer.

Introduction to the MoonThe moon is a celestial body that revolves around the earth, and it belongs to the satellite, with a diameter of about kilometers and a mass of about kilograms. The Moon revolves around the Earth, and its orbital period is Days. The structure of the Moon is mainly composed of shell, mantle, nucleus, etc.

There is a moon and a sun in the world, each with its own specialty.

The moon only appears at night, and there are three types of moon occultation, round, half, and curved. Macro cracks.

The sun does not appear in the morning, and although the sun does not change like the moon, it is a big fireball. It can illuminate the world and shine sunlight on flowers and trees, so that flowers and trees will grow and the earth will have life.

The moon and the sun will appear again and again, as if they were on duty or on command. When the sun is on duty, the moon will come out on duty.

Of course, we all know that the beginning is the sun and moon created by Pangu. We also know that there is no end to the Sun and Moon swapping places.

Without the sun and moon, there would be no such beautiful and lovely world.

Once upon a time, the sun and the moon were a pair of good friends, and they went out together every day, went home together, and lived a pleasant life. Suddenly, one day, they saw a group of children discussing who is the most beautiful sun, some say the sun is beautiful, some say the moon is beautiful, everyone is arguing, and there is a lot of trouble. The sun and moon in the sky are also very anxious, they all want to be the most beautiful person in Sun Mengxin, the children on the earth wheel are noisy, the sun and the moon in the sky are also noisy, everyone is getting more and more angry, and finally break up unhappily.

From then on, neither the sun nor the moon paid any attention to the other, and no one saw anyone, one came out in the morning and the other in the evening.

Every day the sun rises very early, and it uses all its strength to illuminate the earth, nurturing patches of green with its own sunlight, making the earth appear vibrant. The little bird smiled when he saw it, the little tree saw it grow taller every day, and the people were radiant when they saw it. But the sun also sometimes thinks of its friend, the moon.

The moon waits for the sun to go every day before quietly coming to the earth, it is accompanied by the night of the lonely lamp every day, making the night sky extraordinarily beautiful, so that people who are tired of a day slowly fall asleep, at this time the moon feels particularly relieved.

The thoughts of the moon and the sun were known to the attentive earth, who said to them, "You both care so much about each other, why do you want to separate?" You guys are okay!

Let's go out and go home together like we did before! The moon and the sun were thrilled to hear this, but they immediately fell back into deep thought. The sun couldn't help but think of the little birds that smiled at it every day, the small trees that thrived in the sun, and then the moon also remembered its lonely lamp at night, and the people who fell asleep under the moonlight were also a little reluctant.

With a smile, the earth said to them: "Man should be a useful person, not a man who only talks about decency and does not benefit others, so you are all the most beautiful." ”

The sun and the moon alternately serve people, and although they are very busy and tired, they all feel happy and fulfilled like never before!

One is scorching and the other is cool.

One is unrestrained and the other is gentle.

One sunshine and one subtle.

One is fierce and the other is gentle.

Without sunlight, life cannot grow.

Without the moon, the mind cannot store energy.

Without sunlight, the world would lose its luster.

Without the moon, and the change of humanity will lose its romance.

Sunshine and moon.

It's like mountains and valleys.

Desert vs. sea.

Big trees and small grasses.

Flowers and green leaves.

The sun never dislikes the moon for not having temperature.

The moon will not dislike the heat of the sun.

The sun, from its first rise, goes straight to the moon.

The moon, on the other hand, follows the footsteps of the sun.

The world is inseparable from the sun.

People are inseparable from the moon.

As. Men can't do without women.

Women can't do without men.

So. The world is in harmony.

Humanity is happy.

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, so no matter how strong the moon's light is, it is not stronger than the sun.

Speaking of which, we are so grateful to the sun for its grace to us, even after it sets, it still transmits its light to mankind through the moon. Sun, we love you, just like a song goes: "All things grow by the sun, rain and dew nourish the seedlings", without the sun in the world, then everything in the world can not 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.