'I do not have an explanation': Pentagon official shows video of unidentified object

2024/05/2019:55:05 science 1668440

'I do not have an explanation': Pentagon official shows video of unidentified object - DayDayNews

'I do not have an explanation': Pentagon official shows video of unidentified object - DayDayNews

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The metallurgical industry in the Qing Dynasty exceeded the level of the mid-Ming Dynasty. According to statistics from the Geological Survey, the national output of iron smelting by the old method was more than 170,000 tons in 1919, and the output of iron in the late Qing Dynast - DayDayNews

The metallurgical industry in the Qing Dynasty exceeded the level of the mid-Ming Dynasty. According to statistics from the Geological Survey, the national output of iron smelting by the old method was more than 170,000 tons in 1919, and the output of iron in the late Qing Dynast

Cold Knowledge of the Qing Dynasty - Metallurgical and Machinery Manufacturing Achievements of the Qing Dynasty

06/10 1613

[Source: Shunyi Ecological Environment] Ubiquitous plastic products have facilitated people's lives, but the resulting plastic waste has caused a lot of pollution to the ecological environment... - DayDayNews

[Source: Shunyi Ecological Environment] Ubiquitous plastic products have facilitated people's lives, but the resulting plastic waste has caused a lot of pollution to the ecological environment...

"Popular Science" "Degradable Plastics" Revealed

06/10 1983

Wang Jianping: One article per day: "Theory of Perception." Part 9" (105) Why is a problem a problem? Why is there a problem? Existence has existed for hundreds of millions of years. Is there something wrong with existence? Logically speaking, there is definitely no problem. If t - DayDayNews

Wang Jianping: One article per day: "Theory of Perception." Part 9" (105) Why is a problem a problem? Why is there a problem? Existence has existed for hundreds of millions of years. Is there something wrong with existence? Logically speaking, there is definitely no problem. If t

A major turning point for mankind will occur: all problems will no longer be a problem

06/09 1687

my country's first artificially bred rabbit cat turns one year old. On July 7, the Internet celebrity "Elder Snake" in Xining Wildlife Park is one year and two months old. "She" is my country's first artificially bred rabbit cat. "She" "It not only fills the gap in the successful - DayDayNews

my country's first artificially bred rabbit cat turns one year old. On July 7, the Internet celebrity "Elder Snake" in Xining Wildlife Park is one year and two months old. "She" is my country's first artificially bred rabbit cat. "She" "It not only fills the gap in the successful

Xining is awesome! For the first time, China achieved

06/09 1073

The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr - DayDayNews

The spring itself is elastic. After being compressed, the spring will have the tendency to return to its initial state, and therefore has elastic potential energy. We can think of it as the energy stored in the overall system of the spring. So the question is Question: If a compr

Put a compressed spring into strong acid. After the spring dissolves, where does the energy of the spring go?

06/09 1513

It might be tempting to use a cup with a green “Plant-Based” label for a cup of coffee, or see that the plastic utensils in your takeout are “100% compostable.” Some comfort. So could a plastic made from plants rather than petroleum actually melt harmlessly in the environment? - DayDayNews

It might be tempting to use a cup with a green “Plant-Based” label for a cup of coffee, or see that the plastic utensils in your takeout are “100% compostable.” Some comfort. So could a plastic made from plants rather than petroleum actually melt harmlessly in the environment?

"Science" Have you ever used environmentally friendly plastics made from plants?

06/10 1657

Paris, July 7, local time, France had 161,265 new confirmed patients and 89 new deaths within 24 hours, bringing the total to 149,943. - DayDayNews

Paris, July 7, local time, France had 161,265 new confirmed patients and 89 new deaths within 24 hours, bringing the total to 149,943.

An increase of 161,000 cases! New variant of COVID-19 detected in Europe! Fuel subsidy launched in October! France plans to limit property tax increases! Pasta and meat prices are going crazy

06/10 1662

Protecting wild animals is everyone’s responsibility. The reporter learned from the Guangdong Coast Guard Bureau on July 7 that recently, law enforcement officers from the Nan'ao Work Station of the Guangdong Shantou Coast Guard Rescued a pangolin, a national first-level wild pro - DayDayNews

Protecting wild animals is everyone’s responsibility. The reporter learned from the Guangdong Coast Guard Bureau on July 7 that recently, law enforcement officers from the Nan'ao Work Station of the Guangdong Shantou Coast Guard Rescued a pangolin, a national first-level wild pro

Meet a "cute" on the road! Coast Guard law enforcement officers warmly rescue pangolins, national first-level protected animals

06/09 1082

Since the terms information and entropy are used in many branches of science, this may sound strange to those familiar with the second law of thermodynamics. How could information and entropy be identical? - DayDayNews

Since the terms information and entropy are used in many branches of science, this may sound strange to those familiar with the second law of thermodynamics. How could information and entropy be identical?

Conservation of information and the second law of thermodynamics, how can these basic laws be consistent?

06/09 1012

Human beings cannot prevent aging, but they can use chips to store brain information, give up their physical bodies, and resurrect with the help of robot bodies. This is the future immortality of mankind, which is the immortality we have been pursuing. - DayDayNews

Human beings cannot prevent aging, but they can use chips to store brain information, give up their physical bodies, and resurrect with the help of robot bodies. This is the future immortality of mankind, which is the immortality we have been pursuing.

From the machine age of unmanned factories to humans giving up their physical bodies and returning to eternal life

06/10 1909

Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l - DayDayNews

Pictured above is Physarum polycephalum, a protist, specifically a slime mold. The term "slime mold" does not refer to a specific single group, but is a broad term referring to several types of eukaryotes that behave similarly. Regardless, they possess intelligence, although it l

Intelligent slime mold

06/11 1668

01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio - DayDayNews

01. Nostalgia is a spaceship heading to Mars. ——Douyou 02. Since childhood, I have been taking care of the stars of all generations alone. ——Bai Helin's "Loneliness" 03. The stars should laugh, the universe is a remote place anyway. ——Pasternak 04. All my desires and contemplatio

Golden sentence#星星——All my desires and contemplations are the slowly exhaled air currents of this universe.

06/11 1169

Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S. - DayDayNews

Today, an insight into the vision of a once young cosmic artist shows the dust continuum and molecular lines of carbon monoxide and water seen in the pair of SPT0311-58 galaxies. (Image source: ALMA (ESO/NAOJ/NRAO)/S.

Water was discovered in ancient galaxies, which surprised astronomers. What happened?

06/11 1154

Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th - DayDayNews

Text/Picture Yangcheng Evening News all-media reporter Wen Cong has completed about 700 experimental projects, filling many gaps in my country's scientific research field... Next month, the China Spallation Neutron Source (CSNS) will have been in operation for four years. With th

Filling in many scientific research gaps! The China Spallation Neutron Source will be in operation for four years丨The party flag is flying high at the grassroots level

06/11 1511

In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality. - DayDayNews

In fact, we are not unfamiliar with the term mycotoxins. They generally exist in grains. The detection of mycotoxins can be carried out on-site. When choosing instruments for testing, we must choose brands with good quality.

Introduction to applicable industries of mycotoxin detectors

06/11 1040

How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can - DayDayNews

How should we choose testing instruments? When choosing together, we should focus on the quality of the product. Speaking of instruments, online residual chlorine analyzers have a wide range of uses. They are not only very accurate in detecting residual chlorine content, but can

Instructions for using online residual chlorine analyzer

06/11 1125

This kind of missile boat adopts a catamaran wave-piercing layout that is very similar to the Type 022 missile speedboat. It is nicknamed "Large 022" by military fans, which fully illustrates the "one family in the Strait". "Very honest", the biggest feature of this type of ship - DayDayNews

This kind of missile boat adopts a catamaran wave-piercing layout that is very similar to the Type 022 missile speedboat. It is nicknamed "Large 022" by military fans, which fully illustrates the "one family in the Strait". "Very honest", the biggest feature of this type of ship

The mass-produced "Taiwan Version 022" missile boat was delivered, boasting that it is an "aircraft carrier killer" and strengthening its air defense capabilities.

06/13 1580

Not long ago, the Eastern Theater Command dispatched warships, anti-submarine aircraft, fighter aircraft and other military forces to organize joint firepower assault exercises, that is, operational offensive exercises, in the waters southwest and southeast of Taiwan Island. It w - DayDayNews

Not long ago, the Eastern Theater Command dispatched warships, anti-submarine aircraft, fighter aircraft and other military forces to organize joint firepower assault exercises, that is, operational offensive exercises, in the waters southwest and southeast of Taiwan Island. It w

If Taiwan were to be unified by force, what obstacles would the Taiwanese, Japanese, and US military pose to the People's Liberation Army?

06/13 1017

Taiwan's "Yahoo News" stated that Taiwan's "Chinese Academy of Sciences" conducted intensive missile tests in November, and that mainland warships and intelligence ships have appeared in the waters east of Hualien as many as 10 times since early November. - DayDayNews

Taiwan's "Yahoo News" stated that Taiwan's "Chinese Academy of Sciences" conducted intensive missile tests in November, and that mainland warships and intelligence ships have appeared in the waters east of Hualien as many as 10 times since early November.

Taiwanese media are hyping again: Taiwan frequently tests missiles, and mainland warships have appeared in the waters east of Hualien many times recently.

06/13 1893

According to the report, this test is the first time that the Taiwan military has tested the AIM-120 outside the territory of the United States. The green "Liberty Times" also specially added an attributive: "With the consent of the United States." Its image of a begging pug is r - DayDayNews

According to the report, this test is the first time that the Taiwan military has tested the AIM-120 outside the territory of the United States. The green "Liberty Times" also specially added an attributive: "With the consent of the United States." Its image of a begging pug is r

seek death! Taiwan's F16 test-fired the AIM120 missile for the first time, and the Taiwanese media also added "with the approval of the United States"

06/13 1888

Grouper is the general name for fish in the subfamily Grouperinae. It is a relatively common marine fish. There are 65 species of grouper in 11 genera distributed along the coast of my country. Grouper's meat is delicious, nutritious, low in fat, and high in protein. It is consid - DayDayNews

Grouper is the general name for fish in the subfamily Grouperinae. It is a relatively common marine fish. There are 65 species of grouper in 11 genera distributed along the coast of my country. Grouper's meat is delicious, nutritious, low in fat, and high in protein. It is consid

What type of food do groupers like to eat the most? Grouper feeding habits and fishing techniques

06/13 1722

We have to eat you. The meat will spring to the teeth with exercise. Another treasure of grouper is the skin, which is full of collagen. If you pull a piece of fish skin and stuff it into your mouth, you will immediately feel the stickiness of the seal. - DayDayNews

We have to eat you. The meat will spring to the teeth with exercise. Another treasure of grouper is the skin, which is full of collagen. If you pull a piece of fish skin and stuff it into your mouth, you will immediately feel the stickiness of the seal.

The fierce grouper, paired with common radish leaves and pickled vegetables, is a perfect meal

06/13 1984