Astronomy - Ch. 24: Variable Stars (5 of 26) Cepheid Variables: Periodicity

2024/05/0616:06:04 science 2589

Astronomy - Ch. 24: Variable Stars (5 of 26) Cepheid Variables: Periodicity - DayDayNews

Astronomy - Ch. 24: Variable Stars (5 of 26) Cepheid Variables: Periodicity - DayDayNews

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According to a recent report by Germany's "Bild", Nielsen said in an interview with the media that he was very uncomfortable with China's space program, especially the signing of a memorandum of understanding with Russia "on cooperation in the establishment of an international lu - DayDayNews

According to a recent report by Germany's "Bild", Nielsen said in an interview with the media that he was very uncomfortable with China's space program, especially the signing of a memorandum of understanding with Russia "on cooperation in the establishment of an international lu

Does China want to occupy the moon? Nelson's heart is as ugly as his appearance

05/18 1124

As we all know, there are two space stations in Earth orbit today. One is the International Space Station, which has been operating for more than 20 years, and the other is the Chinese Space Station, which has only been operating for one year. The International Space Station is i - DayDayNews

As we all know, there are two space stations in Earth orbit today. One is the International Space Station, which has been operating for more than 20 years, and the other is the Chinese Space Station, which has only been operating for one year. The International Space Station is i

Among the Chinese, Russian and American space station cabins, whose sleeping area is the best? The Tianhe cabin sleeping area is simply a luxury version

05/17 1011

Controlled ion transport within nanochannels is crucial for biological membranes and artificial membrane systems. Covalent organic frameworks (COFs) are emerging crystalline polymer materials with regular and adjustable nanochannels, and have become an ideal material platform for - DayDayNews

Controlled ion transport within nanochannels is crucial for biological membranes and artificial membrane systems. Covalent organic frameworks (COFs) are emerging crystalline polymer materials with regular and adjustable nanochannels, and have become an ideal material platform for

"ACS Nano" from Tianjin University's Wu Hong/Jiang Zhongyi team: charged nanochannels in covalent organic framework membranes achieve efficient ion interception

05/17 1899

Text | Science Wormhole animals reproduce through mating, but their pairing forms are diverse and can be divided into relatively rare monogamy (monogamy) and mixed mating. The mixed system also includes polygamy, polyandry, and polyandry. As we all know, animals mate in order to - DayDayNews

Text | Science Wormhole animals reproduce through mating, but their pairing forms are diverse and can be divided into relatively rare monogamy (monogamy) and mixed mating. The mixed system also includes polygamy, polyandry, and polyandry. As we all know, animals mate in order to

"Monogamous" animals, if one partner dies, can they withstand the temptation of mating?

05/17 1119

Satellite images from NASA and the European Space Agency have captured the appearance of the first sunspot of the new solar cycle. Sunspots are areas of intense magnetic activity, dark spots visible on the surface of the sun. Sunspot activity rises and falls with an approximately - DayDayNews

Satellite images from NASA and the European Space Agency have captured the appearance of the first sunspot of the new solar cycle. Sunspots are areas of intense magnetic activity, dark spots visible on the surface of the sun. Sunspot activity rises and falls with an approximately

"Space Observation" The beginning of a new solar activity cycle

05/18 1236

China's sky eye discovered a mysterious signal, which was suspected to come from a foreign civilization, but American scientists poured cold water on it. Recently, a research team from Tianyan announced that in past observations, they discovered several very special signals. Thes - DayDayNews

China's sky eye discovered a mysterious signal, which was suspected to come from a foreign civilization, but American scientists poured cold water on it. Recently, a research team from Tianyan announced that in past observations, they discovered several very special signals. Thes

China's sky eye discovered mysterious signals, but American scientists said they came from the earth. Do aliens exist?

05/18 1697

@真知新ordinate Popular science and cold knowledge 1. Lamprey Lamprey has lived on the earth for hundreds of millions of years, and it has always maintained its appearance in ancient times, so it is also called a "living fossil." Later this creature was assigned to the superclass Ag - DayDayNews

@真知新ordinate Popular science and cold knowledge 1. Lamprey Lamprey has lived on the earth for hundreds of millions of years, and it has always maintained its appearance in ancient times, so it is also called a "living fossil." Later this creature was assigned to the superclass Ag

Seven exotic species, one relies on breeding and one is prohibitive

05/18 1704

Text and photos/Yangcheng Evening News all-media reporter Ouyang Zhiqiang Correspondent Huo Erman Sponsored by China Electronics Society, Intelligent Human-Computer Interaction Expert Committee of China Electronics Society, Aerospace Medical Engineering and Space Biology Professi - DayDayNews

Text and photos/Yangcheng Evening News all-media reporter Ouyang Zhiqiang Correspondent Huo Erman Sponsored by China Electronics Society, Intelligent Human-Computer Interaction Expert Committee of China Electronics Society, Aerospace Medical Engineering and Space Biology Professi

The Second Annual Conference on Intelligent Human-Computer Interaction Technology will open in Foshan on July 8

05/17 1830

pixabay.com State-owned enterprises have stepped out of the "high wall" to promote the scientific and technological achievements they have developed to the society. - DayDayNews

pixabay.com State-owned enterprises have stepped out of the "high wall" to promote the scientific and technological achievements they have developed to the society.

China National Nuclear Corporation joins hands with the national technology market to promote the latest scientific and technological achievements to the society

05/17 1402

"What are humans doing? They discharge so much sewage! The fish are all affected." "Why do humans pursue progress and development? Human beings are very selfish when they only think about themselves." "Why don't humans let other animals manage the earth?" Early in the morning, th - DayDayNews

"What are humans doing? They discharge so much sewage! The fish are all affected." "Why do humans pursue progress and development? Human beings are very selfish when they only think about themselves." "Why don't humans let other animals manage the earth?" Early in the morning, th

Cognition｜What are humans doing?

05/17 1200

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ - DayDayNews

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ

Do you still remember Fang Zhouzi? Is he a scientific person or a highly educated paparazzi?

05/19 1695

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t - DayDayNews

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t

Are there points, lines and planes in the universe? Will the "two-way foil" in "The Three-Body Problem" exist?

05/19 1848

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it - DayDayNews

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it

The moon has been Chinese since ancient times. Nielsen, please shut up. We don’t need to occupy it.

05/19 1973

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to - DayDayNews

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to

The 5 most poisonous animals in the world, some of which have no cure

05/19 1111

Using the locust disaster as a clue and Lockwood's arrest as an auxiliary clue, the plot unfolds bit by bit, going through the black market transactions, dinosaur park, isolation zone, and successful rescue. Because it is a 3D effect, the picture is very good. It's amazing, espec - DayDayNews

Using the locust disaster as a clue and Lockwood's arrest as an auxiliary clue, the plot unfolds bit by bit, going through the black market transactions, dinosaur park, isolation zone, and successful rescue. Because it is a 3D effect, the picture is very good. It's amazing, espec

Jurassic World 3 - Thoughts

05/19 1894

In recent years, China has developed rapidly in the aerospace field. In fact, this can be seen from a series of remarks by NASA Administrator Nielsen, because he will mention China and criticize China on more and more occasions. - DayDayNews

In recent years, China has developed rapidly in the aerospace field. In fact, this can be seen from a series of remarks by NASA Administrator Nielsen, because he will mention China and criticize China on more and more occasions.

Another weird comment! NASA Director: Beware of "China Occupying the Moon", Netizens: The situation is really low

05/19 1045

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ - DayDayNews

Fang Zhouzi has disappeared from the public eye for several years. He was once a pioneer in fighting counterfeiting and was frequently active in various column groups. He was also called the "Internet Lu Xun". No matter how good a scientific person is in school, in order to produ

Do you still remember Fang Zhouzi? Is he a scientific person or a highly educated paparazzi?

05/19 1695

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t - DayDayNews

Last night I went for a walk and saw two primary school students arguing fiercely in the elevator. When one of the boys saw me, he anxiously asked me to be the referee and asked: "Uncle, do you think there are really points, straight lines and points in the universe?" Plane?" I t

Are there points, lines and planes in the universe? Will the "two-way foil" in "The Three-Body Problem" exist?

05/19 1848

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it - DayDayNews

I saw a piece of news in which NASA Administrator Nielsen announced that China wants to occupy the moon and asked everyone to be careful. I think this director is too naive. The moon has been occupied by the Chinese a long time ago, so there is no need to think about occupying it

The moon has been Chinese since ancient times. Nielsen, please shut up. We don’t need to occupy it.

05/19 1973

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to - DayDayNews

According to statistics, there are 1.5 million species of animals on the earth. In order to thrive on this beautiful planet, each animal has its own unique secret weapon. There is a group of animals that are the masters of poison in the animal kingdom, making them intimidating to

The 5 most poisonous animals in the world, some of which have no cure

05/19 1111

Brand building is one of the key tasks of a hospital. A good brand helps to improve both the quality and efficiency of the hospital. On the morning of July 1, General Manager Xu Yan and Director Liu Xin of General Technology Global Medical Brand Management Department visited GM C

Promotion of free clinic products has been improved! Leaders of the Group’s Brand Management Department visited our institute for guidance

05/19 1651

Question: How can I receive articles like this every day? Answer: Just click "Follow" in the upper right corner. Whether a man's life span is long or short will be affected by comprehensive factors, so we should think big and start small, focus on strengthening one of the factors - DayDayNews

Question: How can I receive articles like this every day? Answer: Just click "Follow" in the upper right corner. Whether a man's life span is long or short will be affected by comprehensive factors, so we should think big and start small, focus on strengthening one of the factors

Most men with long lifespans have three things in common at night. If you have all three, you will probably live longer.

05/19 1661