How many moons are in the sky and why is there a moon in the sky

There will only be one moon in the sky.

Recently, a message that "two moons can be seen on the night of August 27, 2010 (Friday)" aroused the curiosity of many netizens, and the commenter said that "looking up at the sky at 0:30 on August 27, you will see two moons", "Mars will become the brightest star in the night sky in August, and it will be as big as a full moon with the naked eye", "The next time it happens will be 2287". In this regard, some people expressed doubts, and many people said that they were "looking forward to it" and "waiting for that moment".

This information is actually misinformation from netizens, and the reason is "estimated to be due to the astronomical 'Martian opposition' phenomenon that occurred on August 27, 2003." At that time, the distance between Mars and the Earth was about 5575 80,000 kilometers, which became the shortest distance in 60,000 years. Observed on Earth, the orange-red Mars becomes the brightest 'star' in the sky."

In fact, even at that time, the Mars seen with the naked eye was only the size of a rice ball, and it was impossible to compare with the moon. Almost every year since that 'Mars opposition', there have been misinformation about seeing the same astronomical phenomena at this time, and this year is no different. You won't see two moons.

However, this August 27 if the weather is good. We can see the "Jupiter conjunction Moon", which is the beautiful celestial phenomenon when Jupiter comes closest to the Moon. If you are interested, you can keep an eye out for what is about to happen in the sky"Fairy Tale of the Stars and Moon", an intimate encounter between Jupiter and the Moon.

Friends can start watching tonight, and you'll see Jupiter and the Moon getting closer and closer!

1 pc. As far as the earth is concerned, the moon is the moon that orbits the earth, so it should be one.

There will only be one moon in the sky.

The Moon is Earth's only natural near-Earth satellite.

Scientists**, after a long time, there will be an asteroid thrown at the earth, which may become the second "moon" of the earth, and it may also bring disaster to the earth.

Nonsense n moon light belongs to the earth is only one.

The rotation of the moon is 28 days, so it means that the moon will appear on the sunny side of the earth for 14 days, that is, on the side of the sun, is it really 14 days when the moon cannot be seen?

No, just in the middle of the night during these 14 days.

You can't see the moon, and the landlord only considers the point opposite the sun (that is, the area of 0 o'clock, and does not consider other areas, such as the area of 21 o'clock or 3 o'clock).The landlord should observe this problem by himself, and he will definitely have a new understanding of this problem after a month of observation.

When the moon is full on the 15th and 16th of the lunar calendar, that is to say, the sun, the earth, and the moon are exactly in the same line, then the moon should be completely covered by the earth without any light, how can it be a full moon?

Moon. The orbital plane around the Earth and the orbital plane of the Earth around the Sun do not coincide exactly, and there is an angle of 5 degrees and 9 minutes, so not every time you look at the moon and the moon, you can enter the Earth's shadow cone.

The moon appears in the sky.

It is because the moon reflects the sunlight to the earth, so that the horizontal plane of the earth is facing the moon.

The place to see zhi to the surface of the moon.

The moon and the sun appear at the same time because the sun and the moon are on the same side of the earth at the same time, so that the moon is seen by you because it reflects the sun's rays, and the sun is also seen by you at the same time, so you see the moon and the sun at the same time.

If you think that the moon can only appear at night, it is because you retain the empirical conventional thinking and do not interpret it with what you have learned.

When analyzing some problems, you can borrow model analysis, such as taking a few balls to simulate the movement of the moon, the sun, and the earth.

1. New moon (the first day of the lunar calendar, that is, the new day.

0 degrees; 2. Shangemei month (generally around the second night of the lunar calendar --- about the seventh day of the lunar calendar): 0 degrees --- 90 degrees; Swimmer buried.

3. The first quarter moon.

Around the eighth day of the lunar calendar): 90 degrees;

4. Gibbous Moon (around the ninth day of the lunar calendar --- about the fourteenth day of the lunar calendar): 90 degrees --- 180 degrees;

5. Full moon (looking at the moon, around the 15th or 16th day of the lunar calendar): 180 degrees;

6. Gibbous Moon (about the 16th lunar --- 23rd of the lunar calendar): 180 degrees--- 270 degrees;

7. The second quarter moon (around the 23rd lunar month): 270 degrees;

8. Xiaemei month (around the end of the --- month around the 24th lunar calendar): 270 degrees--- 360 degrees; In addition, the last day of the lunar month is called the obscure moon; , i.e. missing.

Take the "round mirror and walk to the bridge", and there will be an extra moon in the sky.

This sentence is from the second volume of the first grade Chinese text "Rainbow", and the original text is excerpted as follows:

Mom, if I take the round mirror you used to comb your hair and walk to the bridge, won't there be an extra moon in the sky? Are you happy that I comb your hair with the moon?

Brother, if I take the swing you tied to the tree in front of the door and hang it on the rainbow bridge, won't my flower skirt become a colorful cloud when I sit on the swing and swing around? Do you see it, are you happy?

Teaching Objectives:

1. With the help of Chinese pinyin, read long sentences and questions well, pay attention to pauses, and be able to read texts correctly.

2. **Combined, combined with the actual life of the year, understand the meaning of the sentence, understand the content of the text, talk about the three good wishes of "I" around the rainbow, and feel the kindness and good wishes of "me".

3. Recognize the side of the word clothes, be able to confirm the reading of 12 new words such as "rainbow", read and remember 10 words such as "rainbow", classify and accumulate "come and go" words, and try to say such words.

4. Be able to read and write 7 characters such as "着" with a smile and a smile, pay attention to the position of parts and strokes in the Tianzi grid, and strive to write Chinese characters in accordance with the writing requirements with the correct pen holding posture and writing posture.

When there is only the moon in the sky, it is evening and sunset.

The Moon is a spherical celestial body that revolves around the Earth and is also a natural satellite of the Earth. In Chinese, it is commonly known as the moon or moon, and in ancient times, it was also called Taiyin, Xuantu, Chanjuan, and Yupan. It is the fifth largest moon in the solar system, with an average radius of about kilometers, which is equivalent to a multiple of the Earth's radius.

The mass is close to kilograms, which is twice that of the Earth.

Looking at the Moon from Earth, the surface of the Moon is not half of it. This is because the moon swings like an equilibrium. Observers on Earth will feel the Moon swinging back and forth in a north-south direction as it orbits the Earth.

Principles of the Moon's Tides:

The law of gravitation states that the magnitude of gravity is proportional to the product of the masses of two objects and inversely proportional to the square of the distance between them. The gravitational pull of the Sun on the Earth is much stronger than the gravitational pull of the Moon on the Earth, but the gravitational pull of the Sun is less than half that of the Moon.

Although the gravitational force (or tidal force) that causes the rise and fall of the sea water is caused by the gravitational pull of the sun and the moon, it is not the absolute gravitational force of the sun and the moon, but the difference between the gravitational force of the attracted object and the gravitational force of the center of the earth. The tidal force is directly proportional to the mass of the tidal object, and inversely proportional to the cube of the distance from the celestial jujube to the Earth.

Because the mass of the Sun is about 27.1 million times the mass of the Moon, and the average distance between the Sun and the Earth is about 389 times the average distance between the Moon and the Earth, the gravitational force of the Moon is about twice that of the Sun, so it is mechanically proved that the tides are indeed mainly caused by the Moon.

Beginning 15.

In the heavens, at the 15th of the month, only the moon passes by, because at the 15th the moon is very round. Then there would only be a moon passing by Lu Heng throughout the night.

The fifteenth circle of the moon is an astronomical phenomenon. It is commonly said that "the moon is round on the fifteenth month", and the day on which the "new moon" is located is the first day of the month. But on the first day of the new year, the "New Year" may occur in the early morning, or in the morning, in the afternoon, or in the evening, and each synodic month itself has its own length and shortness.

In this way, the "hope" of the moon's fullest moment can occur as early as the fifteenth day of the lunar calendar.

Causes:

In the traditional Chinese calendar, the months are based on the phases of the moon. The moon is the same as the ecliptic longitude of the sun in the early dismantling is the "Shuo", and the day of the Shuo is the New Year's Day, that is, the first day of the lunar calendar, and the Moon is not visible to the naked eye on the earth, and the New Moon is the starting point of the lunar phase change cycle. The interval between one new new and the next is a lunar month.

At about the "midpoint" of each lunar month, there will be a full moon. The specific moment corresponding to the full moon is called "hope". Because it contains two important nodes, "Shuo" and "Wang", the month of the lunar calendar is called "Shuo Yue", and a synodic month is about about a day on average.

In order to match the "length" of the synodic month as much as possible, the lunar month has 30 days for the big month and 29 days for the minor month, and the average number of days and days in the month is relatively close.