After Jiahao and Wanyu came back together, Wang Tao and Yun Feifei looked at them and smiled, and Jiahao saw this and asked, "What are you two doing?" What to laugh at? You haven't recovered from the sweetness yet, have you? ”

Seeing this, Wang Tao immediately wanted to divert the topic, so he said: "Where did you two go, we have eaten well, and we have left food for you." ”

Seeing this, Jiahao was afraid that Wang Tao would ask more, so he said: "Really, great, I'm already hungry, eat, eat." As he spoke, he gave Wanyu a look, Wanyu understood, and the two quickly rushed in.

Wang Tao and Yun Feifei looked at each other when they saw this, and Yun Feifei said curiously: "When did the two become so tacit, I have never seen these two people eat so actively." ”

Jiahao and Wanyu didn't speak, they actually ate by themselves, at this time Wang Tao and Yun Feifei walked in and watched the next year's personal food so sweet, Wang Tao and Yun Feifei did it and watched them eat.

Jiahao immediately felt uncomfortable, so he said, "What is the situation with the two of you?" Is it not full? Come on, eat some more. ”

Yun Feifei shook her head directly, shaking her head like a rattle, Wang Tao smiled and said, "Where did you two go just now, you haven't been back for so long, the scenery outside is very good, right?" ”

Jiahao then looked at Wanyu, and saw that Wanyu was eating with her head down, and Jiahao didn't know what to say, Jiahao suddenly remembered something, so he said to them: "We are blessed tonight." ”

Wang Tao and Yun Feifei asked curiously, "What is blessed?" ”

Jiahao then said mysteriously: "I know that you don't watch TV and don't pay attention to the news, let me tell you, there is a meteor shower at ten o'clock tonight, and the rarest thing is that it is very likely to meet the broom star, which is also the comet I said." And. Our orientation is a rare vision of the best direction in a century, and, I also checked in advance last night, tonight can be described as cloudless, the vision is quite good, so tonight we look at the stars together, look at the constellations together, wait for the arrival of the meteor shower together, how about it? ”

At this time, they were all excited when they heard that there was a meteor shower tonight. All hurriedly asked confirmatively, "Really?" Will there really be a meteor shower? I've never seen a meteor shower. ”

The solar system is filled with dust and solid masses called meteoroids, and these "space dross" rub against the atmosphere and burn when they break into the Earth's range, becoming the meteors we see every day. If the Earth encounters a dense group of meteoroids, such as material released by a comet, meteor showers will occur.

A meteor shower is a special celestial phenomenon in which a swarm of meteors appears to come out of a point in the sky and fall down. This point, or a small area of the sky, is called the radiant of the meteor shower. A radiant is a perspective effect. The root cause of the formation of meteor showers is due to the fragmentation of comets. Comets are mostly made up of ice and dust. As the comet gets closer to the Sun, the ice vaporizes. Dust particles are ejected out of the parent body and into the comet's orbit like fountain water. However, large particles remain around the parent comet to form dust comets; The small particles are blown away by the radiation pressure of the sun. Comet tails are formed. The remaining material continues to remain in the vicinity of the comet's orbit. However, even small eruption velocities. It can also cause a big difference in the rotation period of the particles. Therefore, on the next comet return, the small particles will lag behind the parent body, while the large particles will be ahead of the parent body. As the Earth passes through the dust tail orbit, there is a chance to see a meteor shower. Meteor shower activity is a comet cycle.

Meteor showers are thought to be the result of meteoroids rubbing against the Earth's atmosphere (meteoroids can be asteroids in the asteroid belt), and meteor swarms are often created by fragments of comet splits. As a result, the orbit of a meteor swarm is often correlated with the orbit of a comet. A swarm of meteors forms a meteor shower. A meteor shower looks like a meteor bursting out and falling from a point in the night sky. This point, or this small area of the sky, is called the radiant of the meteor shower. Meteor showers are usually named after the constellation in the celestial region where the shower's radiant is located to distinguish meteor showers from different directions.

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The time was unconsciously at night, and Jia Hao Wanyu and they had already made preparations. Because the weather at this time is a little hot during the day and much more refreshing at night, they have prepared a lot of delicious things, just waiting for the arrival of the meteor shower, and at this time, the sky is already full of stars, dense, Jiahao looked at the sky and said: "Wow, Cowherd Vega, Libra, Orion, all come out." ”

When Wanyu heard this, she hurriedly asked: "Jiahao, you still know astronomy, so powerful, which one is Libra?" I'm a Libra, you point it out to me. ”

Jia Hao said: "I like to study astronomy, I feel that the world is vast, full of mysteries, I especially like to study these, in the summer, in my old house with yours, I like to take out the mat, and then lie in the yard to observe these constellations, occasionally there is a popular row." ”

After a pause, Jiahao pointed to the place full of stars, how does Wanyu know Libra, Jiahao said: "Libra astronomically is located in the southeast direction of Virgo, and it also belongs to the zodiac constellation. Libra astrologically believes that most of the people of this sign have soft eyes, delicate facial features, and the overall appearance gives the impression of harmony; At the same time, they are quiet, peace-loving, and all good and noble things, and have a good understanding. Indecision is their fatal wound; The Libra attribute is the air sign, and the ruling planet is Venus.

The stars of Libra have been recognized since ancient times, but Ptolemy did not make them a separate sign. In the Ptolemaic constellation, the star of Libra belongs to the scorpion claw of Scorpio, Libra α is the claw of the north of Scorpio "claw", and the β of Libra is the claw of the south of Scorpio "claw" of Scorpio.

People see the stars as a scale, symbolizing fairness. However, it was not until Caesar's time in the first century AD that the Romans discovered that the sun moved to this constellation around the autumnal equinox, when day and night were equinoxed, so they drew it independently.

Now, due to the precession of the Earth, the autumnal equinox has moved towards the constellation Virgo in the west. In the present epoch, the Sun moves in Libra from November 1 to November 23 every year.

Everyone heard Jiahao's introduction in such detail, Wang Tao, Yun Feifei and Wanyu were all surprised, and Wanyu's image of the plus sign was almost crazy.

At this time, Yun Feifei asked: "Then, Jiahao, I am from Orion, where do you say there is Orion?" I really want to know where my lovely Orion is, I've heard that Orion is the most gorgeous, right? Tonight I found out that we are the happiest people in the world. Jiahao, where is it? What about Orion? (To be continued......)