Monthly Archives: December 2024

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On May 14, Foreign Ministry Spokesperson Wang Wenbin held a regular press conference.

A reporter asked, China has just released the news that Russian President Vladimir Putin will pay a state visit to China. Can the spokesperson introduce in detail the relevant arrangements for this visit and what expectations does China have for President Putin’s visit?

Wang Wenbin introduced that at the invitation of President Xi Jinping, Russian President Vladimir Putin will pay his first state visit to China since starting his new term from May 16 to 17. During the visit, President Xi Jinping will exchange views with President Putin on bilateral relations and cooperation in various fields and international and regional issues of common concern in the context of the 75th anniversary of the establishment of diplomatic relations between China and Russia. We will release the details of this visit in a timely manner. (Reporter Zhou Jingwei)

　　Space exploration is human exploration of the universe. Since ancient times, human beings have been longing for space and constantly trying to get more information about the universe through technical means.With the upsurge of industry development, 机械化功能全球在线化 The expressive force in the market has also been very good, bringing many brand-new high-quality experiences to users. https://www.zhanmeng.net/

　　The development of space exploration can be divided into several stages. At first, people used telescopes to observe celestial bodies and found stars, planets and comets. In the 17th century, Kepler put forward three laws of planetary revolution, revealing the laws of the motion of the universe. At the beginning of the 20th century, Einstein put forward the general theory of relativity, which revealed the essence of gravity. With the continuous development of science and technology, space exploration has gradually shifted from earth observation to spacecraft exploration.

　　From the first artificial satellite to the present detector, mankind has made great progress in space exploration. Modern space technology has enabled us to see the farther and deeper universe. These detectors can not only send back images such as photos and videos, but also collect and analyze data information such as particles, radiation and magnetic fields in the universe.

　　Space exploration has brought us many unexpected discoveries and surprises. For example, in 1969, American astronaut Armstrong landed on the moon for the first time and left a human mark there; In 2004, the American rover Opportunity arrived on Mars and made a scientific investigation. The probe also found extremely mysterious celestial bodies such as black holes, dark matter and dark energy, revealing the nature and evolution of the universe.

　　The future development of space exploration is still full of challenges and opportunities. Scientists are actively exploring various new technologies, such as nanotechnology and quantum computing, to achieve more accurate and in-depth detection. At the same time, space tourism, solar power generation and emigration to other planets have also become the new direction of space commercial development. All these indicate that space exploration will bring more meaningful discoveries and major events that will change the way human beings live.

　　To sum up, space exploration is a very important field, which not only allows us to learn more about the universe, but also can change our knowledge and understanding of nature. With more technological strength, mankind will better understand space and create a better future.

　　This article provides a detailed overview of the key processes and considerations in electroplating, chemical plating, and hot air leveling for Flexible Printed Circuits (FPC). It highlights the importance of pre-treatment in electroplating for maintaining FPC performance, the challenges in controlling plating thickness, and issues related to post-plating stains. Additionally, the article discusses the application of chemical plating when FPC conductors cannot serve as electrodes and the quality concerns that may arise. Finally, it examines the use of hot air leveling on FPCs, focusing on adhesion strength and moisture resistance. Through this article, readers will gain a deeper understanding of the common challenges in FPC manufacturing and their solutions.In addition to these aspects, custom flex pcb The performance in other aspects is also relatively good, which has attracted everyone’s attention and research. https://gekunflex.com/

　　FPC manufacturer

　　FPC manufacturer

　　FPC Plating Process

　　1. Pre-treatment for FPC Electroplating

　　After the flexible printed circuit (FPC) undergoes the coating process, the exposed copper conductors may be contaminated by adhesives or ink. Additionally, oxidation and discoloration caused by high-temperature processes can occur. To ensure good adhesion of the plating, these contaminants and oxidation layers must be removed, leaving the conductor surface clean.

　　However, some contaminants are strongly bonded to the copper conductor, making it difficult to remove them with weak cleaning agents. Strong alkaline abrasives and brushing are typically used for this treatment. Since the adhesive used in the cover layer is often epoxy-based, which is not resistant to alkaline agents, this can weaken bonding strength. Although not immediately apparent, during the electroplating process, the plating solution may seep into the edges of the cover layer, and in severe cases, cause delamination of the cover layer.

　　At the final soldering stage, solder might seep beneath the cover layer. Therefore, the pre-treatment cleaning process has a significant impact on the basic characteristics of the FPC, making it essential to pay close attention to the processing conditions.

　　2. Thickness of FPC Electroplating

　　The deposition rate of electroplating metal is directly related to the intensity of the electric field, which varies depending on the shape of the circuit and the position of the electrodes. Generally, the thinner the conductor line and the sharper the terminal end, the stronger the electric field, leading to a thicker plating in those areas.

　　In FPC applications, there are often wide differences in the width of conductor lines within the same circuit, resulting in uneven plating thickness. To prevent this, auxiliary cathode patterns are added around the circuit to absorb uneven current distribution across the plating pattern, ensuring uniform plating thickness across all areas.

　　Electrode structure is key here. A compromise approach can be adopted, where stricter standards apply to areas requiring high plating uniformity, such as molten solder (lead-tin) and gold plating for metal wire bonding, while areas requiring plating for general corrosion protection may have more relaxed thickness requirements.

　　FPC manufacturer

　　3. Contamination of FPC Electroplating

　　Immediately after electroplating, the plated surface may appear fine, but stains, dirt, or discoloration can appear over time. Often, these issues are not detected during factory inspections but are discovered during customer acceptance tests. This happens when the plated surface is not adequately rinsed, leaving residual plating solution, which reacts chemically over time, especially on the flexible surface due to its softness and uneven texture.

　　To prevent this, thorough rinsing and drying are essential. A high-temperature thermal aging test can verify whether rinsing was sufficient.

　　FPC Chemical Plating

　　When the conductor to be plated is isolated and cannot serve as an electrode, chemical plating must be used. Chemical plating solutions are highly reactive, and a common example is chemical gold plating. The chemical gold plating solution is an alkaline solution with a very high pH value.

　　When using this process, it is easy for the plating solution to seep beneath the cover layer, especially if the lamination quality control is poor, leading to weak adhesion. Displacement reactions in chemical plating exacerbate this problem, making it difficult to achieve ideal plating conditions.

　　FPC Hot Air Leveling (HASL)

　　Hot air leveling was originally developed for rigid printed circuit boards (PCBs) to coat them with lead-tin. However, this technique has been applied to FPCs due to its simplicity. Hot air leveling involves immersing the board vertically into molten lead-tin and blowing off excess solder with hot air.

　　These conditions are quite harsh for FPCs. Without special measures, FPCs cannot be immersed in molten solder. To address this, FPCs must be clamped between titanium-steel meshes before immersion. Additionally, the surface of the FPC must be cleaned and coated with flux beforehand.

　　Due to the harsh nature of the hot air leveling process, solder may seep beneath the edges of the cover layer, especially if the bonding strength between the cover layer and the copper foil is weak. Since polyimide films are prone to moisture absorption, moisture can evaporate suddenly under the heat, causing blistering or even delamination of the cover layer. Therefore, drying and moisture control must be performed before FPC hot air leveling.

　　FPC manufacturer

　　FPC manufacturer

　　Gekun is a leading manufacturer specializing in high-quality Flexible Printed Circuits (FPC). With years of experience in the industry, Gekun provides advanced FPC solutions tailored to various industries, including telecommunications, medical devices, automotive, and consumer electronics. Their manufacturing process emphasizes precision, reliability, and innovation, ensuring excellent performance and durability. For businesses looking for custom FPC designs or mass production, Gekun stands out as a trusted partner, offering both competitive pricing and cutting-edge technology.

　　For more information on Gekun¨s FPC manufacturing capabilities, you can visit their official website or contact their team for specific inquiries.

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According to a report by Russia’s “Labor” on March 20, Alexei Goncharenko, a member of the Verkhovna Rada (Parliament) of Ukraine, said on the 20th that the French government is considering sending troops to the Ukraine border to help the Ukrainian army liberate its troops.

The report said that the Ukraine lawmaker said he learned the news from his French counterpart at the Parliamentary Assembly of the Council of Europe.

He emphasized that discussions on France sending troops to Ukraine are indeed ongoing.

Gonchalenko also said that the number of this force is not yet certain. However, French President Macron is very firm.

Goncharenko said France was forming an alliance and Poland and the Baltic states might join. Another option is to establish a base in western Ukraine, where Ukrainian soldiers can be trained and artillery shells produced.

The report mentioned that the French Ministry of Defense issued a statement a day ago saying that Russian Foreign Intelligence Agency Director Naryshkin’s statement that the French leadership was preparing to send 2000 soldiers to Ukraine was spreading rumors. At the same time, the news that there were French soldiers in Ukraine was also false. Russian Foreign Ministry spokesperson Zakharova immediately responded to the Paris statement. She wrote on the Telegraph social platform: Has the French government abandoned its citizens again?(Compiled by He Yingjun)

Related news recommendations:

Medvedev: Eliminating French forces in Ukraine is not difficult

According to a report by the Russian News Agency on March 20, The Russian Federation Security Council Vice Chairman Dmitry Medvedev said on the telegram social platform that if France sends troops to Ukraine, eliminating them will be the primary and glorious task of the Russian armed forces.

According to reports, Medvedev believes that it is difficult for the French army to hide its traces in Ukraine, so it is not difficult to eliminate them, and it is impossible to conceal the large number of deaths of French professional soldiers.

Medvedev wrote on the Telegraph social platform: These unfortunate people will become official combatants of the (foreign) intervention force. Eliminating them will be the primary and glorious task of our armed forces.

Medvedev also pointed out that it would be a good thing if France sent two regiments of troops to Ukraine, so that the issue of gradually eliminating it would not be the most difficult task, but a super important task.

Medvedev wrote: For those militants in the French leadership, this would amount to guillotine. Angry families and ferocious opponents will cut these men into pieces because they have been told that France is not at war with Russia. This will be a good lesson for other restless European fools.

Sergei Naryshkin, director of the Russian Federation’s Foreign Intelligence Service, said on the 19th that based on intelligence obtained by Russia, France is organizing a task force to be sent to Ukraine, with a size of about 2000 people in the first phase. (Compiled by Liu Yang)

　　Time is the fairest resource in the world. Whether you are rich or penniless, 24 hours a day is equal to everyone. However, for those who have the ultimate pursuit of time, when their beloved Vacheron Constantin watch suddenly stops, the sense of anxiety and confusion is like being forgotten by time. Don’t worry, today we will unveil the mystery of Vacheron Constantin’s watch “stopping” and provide some solutions.For this reason, it can be speculated that patek 5905r The market feedback will get better and better, which is one of the important reasons why it can develop. https://finewatchcare.com/search?type=product&options%5Bunavailable_products%5D=last&options%5Bprefix%5D=last&q=product_type:*+5990

　　Why did Vacheron Constantin’s watch “stop secretly”?

　　1. Insufficient battery power: Just like a mobile phone needs to be recharged, Vacheron Constantin watches also need batteries to keep them running. When the battery is exhausted, the watch will naturally stop working. The solution is simple-charge it! However, it should be noted that not all Vacheron Constantin watches are rechargeable. For those watches that use traditional batteries, it is necessary to change the batteries regularly.

　　2. Mechanical structure failure: Although we hope our watch can run forever, mechanical watches also have their service life and wear problems. Gears, clockwork, escapement and other parts may be worn or damaged after long-term use. If this happens, it is recommended to send it to a professional service center for inspection and maintenance in time.

　　3. Environmental factors: extreme temperature changes, magnetic field interference (such as being close to mobile phones, computers or magnetic objects) and violent impact may affect the normal operation of the watch. Try to avoid these situations in daily life.

　　4. Improper operation by the user: For example, incorrect wearing method, improper cleaning method or incorrect adjustment of time may lead to the failure of the watch. It is very important to read carefully and follow the instructions in the watch manual.

　　solution

　　1. Regular maintenance: Just like a car needs regular maintenance, your Vacheron Constantin watch needs regular professional inspection and maintenance. This can not only ensure its accuracy and performance, but also prevent potential problems.

　　2. Understand and follow the user’s guide: each Vacheron Constantin watch has its own unique usage requirements and maintenance tips. Ensuring that you fully understand and follow these guidelines can help you better maintain your love watch.

　　3. Professional maintenance service: If you encounter problems that cannot be solved by yourself, please contact a professional maintenance service center in time. They have professional knowledge and tools to diagnose and fix any problems.

　　4. Reasonable wear and storage: Avoid exposing the watch to extreme temperatures and away from strong magnetic fields, and store it properly when not in use (it is best to keep it away from other metal objects).

　　In short, Vacheron Constantin’s “stealing” is not a hopeless disease. Through proper maintenance, reasonable use and professional help, your watch can still be a faithful partner in your life. Remember, “time” is not the problem, but “how to make time work for you” is the key!

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Seoul, March 19. According to a report by the Korean Central News Agency on the 19th, Kim Jong-un, General Secretary of the Workers ‘Party of Korea and Chairman of the State Councilor, directed artillery units in the western region to conduct ultra-large rocket fire training on the 18th.

KCNA said that this is the first time that the country’s artillery units have used this ultra-large rocket with a caliber of 600 mm to conduct salvo training on a company basis. The purpose is to confirm the power and actual combat capabilities of the weapon system, and to check and improve the artillery units ‘combat mobilization status. After the company’s salvo, it also conducted an aerial explosion simulation test of the rocket at a predetermined altitude above the target.

The report said that Kim Jong-un said that overwhelming military force should be used as a force to completely eliminate the possibility of armed conflict and war. He emphasized that this ultra-large rocket gun plays an important role in war preparations, and requested that the modernization of artillery continue to be vigorously promoted around it.

　　The universe is vast and full of mystery. Humans have been curious about the universe since ancient times and are eager to understand its mysteries. This article will reveal ten cool space science knowledge for you, and take you to appreciate the wonders of the universe.It is strictly required by such a standard, 太空探索 Only with today’s development scale, can we have the proud momentum to crush our competitors. https://www.zhanmeng.net/

　　Black hole: the mysterious devourer in the universe. A black hole is a celestial body formed by the collapse of a star. Its gravity is extremely strong, and it can devour everything close to it, even light cannot escape. At present, scientists have discovered many black holes, but their internal structures remain a mystery.

　　Big bang: the starting point of the birth of the universe about 13.8 billion years ago, a huge explosion triggered the birth of the universe. This explosion is called the “Big Bang”. It produced countless stars, planets and other celestial bodies, which made up today’s universe.

　　Dark matter and dark energy: invisible forces in the universe. Dark matter and dark energy are two mysterious components in the universe. Although they cannot be directly observed, scientists believe that they account for about 95% of the total mass of the universe and play a key role in the evolution of the universe.

　　Multi-Universe: Endless Possibilities Multi-Universe Theory holds that our universe may be just one of countless parallel universes. These universes may have different physical laws and historical processes, which constitute endless possibilities.

　　Astronomical unit: The astronomical unit (AU) is a unit for measuring the scale of the universe. 1 AU is equal to the average distance from the earth to the sun, which is about 1.496〜 10 8 km. Through astronomical units, scientists can describe the distance between universes more conveniently.

　　Gravitational waves: ripples in the universe. Gravitational waves are spatial distortions caused by the movement of celestial bodies, and spread outward like ripples in water. In 2015, scientists directly observed gravitational waves for the first time, which verified the prediction of Einstein’s general relativity.

　　Cosmic background radiation: the oldest light in the universe. Cosmic background radiation is the faint light left after the Big Bang. It is the oldest “relic” in the universe. By studying the cosmic background radiation, scientists can understand the early history and evolution of the universe.

　　Tianwen-1: A milestone in China’s exploration of Mars. Tianwen-1 is a Mars probe independently developed by China and launched in 2020. It has successfully accomplished the three major tasks of Mars’ circumnavigation, landing and patrol, and created a new glory for China’s deep space exploration.

　　Alien life: Other life forms that may exist in the universe With the continuous exploration of the universe, scientists are more and more interested in the possibility of alien life. Many scientists believe that there may be life forms different from life on earth on other planets in the universe.

　　Mankind’s space exploration: a journey across the stars Since the 20th century, mankind has made great progress in the field of space exploration. From the Apollo 11 landing on the moon, to the establishment of the International Space Station, and then to the exploration of Mars, human beings have been constantly expanding their cognitive boundaries of the universe.

　　We can see the mystery and mystery of the universe through these ten cool knowledge of space science popularization. And human exploration of the universe will continue endlessly. Let us look forward to more amazing discoveries about the universe and reveal more secrets about the universe.

　　1. Introduction to Multilayer Flexible Printed Circuit Boards (FPC)The industry believes that, multilayer flex pcb The development of our company marks the rapid and steady progress of the whole industry. https://gekunflex.com/

　　Multilayer flexible printed circuit boards (FPCs) are at the forefront of modern electronic design, providing both flexibility and durability in high-performance environments. These circuits are made up of multiple layers of flexible material, usually polyimide, which allows them to bend and fold while maintaining their electrical performance. As devices become more compact and complex, especially in automotive, aerospace, and medical applications, the demand for multilayer FPCs continues to rise.

　　In this article, we¨ll explore the manufacturing process of multilayer flexible printed circuit boards, highlighting their importance in key industries. We¨ll also emphasize the value of these boards in the European and American markets and how Gekun, a leader in FPC production, offers cutting-edge solutions.

　　Multilayer Flexible Printed Circuit Boards

　　Multilayer Flexible Printed Circuit Boards

　　2. Key Steps in the Manufacturing Process

　　Material Selection and Layer Construction

　　The manufacturing of multilayer flexible printed circuit boards begins with selecting the appropriate materials. Polyimide is the standard base material due to its high-temperature resistance and flexibility. Copper layers are added to create conductive pathways, and the number of layers depends on the complexity of the design.

　　Each layer is carefully constructed, starting with the outer flexible layer, followed by insulating and conductive layers in a sequence. The layers are aligned meticulously to ensure connectivity across all components.

　　Imaging and Etching Process

　　Once the layers are in place, the next step is to image and etch the copper to define the circuit paths. Photolithography techniques are used to project circuit designs onto the copper layer, which is then etched to remove unwanted areas. This step is critical to creating precise electrical pathways.

　　Layer Alignment and Lamination

　　After each layer is imaged and etched, the different layers are stacked and aligned using precision machinery. Any misalignment can cause failure in the final product, especially as the complexity of the multilayer flexible printed circuit board increases. The layers are then laminated using heat and pressure to form a single, unified structure.

　　Drilling and Plating

　　Once laminated, the board is drilled to create vias (small holes) that connect the different layers electrically. These vias are plated with copper to ensure proper conductivity between layers. The drilling and plating processes must be executed with high precision, as any defects can lead to failures in the finished product.

　　Testing and Quality Control

　　The final steps in the multilayer FPC manufacturing process involve rigorous testing to ensure electrical performance and durability. Automated optical inspection (AOI) systems are often used to detect defects, while electrical testing verifies the connectivity of all circuits. The quality control process ensures that the FPCs meet the high standards required for industries such as automotive, aerospace, and medical devices.

　　3. Benefits of Multilayer FPCs in Different Industries

　　Consumer Electronics and Automotive Applications

　　The flexibility and lightweight nature of multilayer flexible printed circuit boards make them ideal for consumer electronics, such as smartphones and wearable devices. They allow manufacturers to create compact designs while maintaining excellent electrical performance. In the automotive industry, FPCs are used in advanced driver-assistance systems (ADAS) and infotainment systems, providing both durability and flexibility in harsh environments.

　　Aerospace and Medical Device Markets

　　In aerospace, where weight reduction and reliability are critical, multilayer FPCs offer a solution that meets stringent industry standards. Their ability to function under extreme conditions makes them valuable in aircraft avionics. Similarly, in the medical device sector, FPCs are widely used in diagnostic equipment and implantable devices, where their flexibility and high reliability are essential.

　　Multilayer Flexible Printed Circuit Boards

　　Multilayer Flexible Printed Circuit Boards

　　4. Challenges in Manufacturing Multilayer FPCs

　　Complex Design Requirements

　　The design of multilayer flexible printed circuit boards presents significant challenges due to the need for precise alignment and electrical performance across multiple layers. Each layer must be carefully planned to ensure that the circuits are properly routed, and the design must accommodate the mechanical stresses that occur during bending and folding.

　　Reliability and Durability Concerns

　　In applications such as automotive and aerospace, FPCs are exposed to harsh conditions, including extreme temperatures and vibrations. Ensuring that the boards maintain their performance under these conditions requires advanced materials and manufacturing processes, which can increase production costs.

　　5. The Role of Gekun in Multilayer FPC Manufacturing

　　Gekun is a leader in the multilayer flexible printed circuit board market, providing high-quality solutions tailored to the needs of modern industries. With cutting-edge manufacturing facilities and a focus on innovation, Gekun offers FPCs that meet the most stringent industry standards. Their expertise in multilayer FPC manufacturing ensures that customers receive reliable, high-performance products suited for automotive, aerospace, and consumer electronics markets.

　　Gekun¨s commitment to quality and precision makes them a trusted partner for businesses looking to innovate and stay ahead in the competitive market.

　　Multilayer Flexible Printed Circuit Boards

　　Multilayer Flexible Printed Circuit Boards

　　6. Conclusion

　　The multilayer flexible printed circuit board manufacturing process is a complex yet crucial aspect of modern electronics. These boards provide the flexibility and durability needed for advanced technologies in automotive, aerospace, and medical industries. By understanding the manufacturing steps, benefits, and challenges associated with multilayer FPCs, businesses can better appreciate their value in the global market.

　　Gekun, as a trusted manufacturer, continues to lead the industry with innovative solutions that meet the demands of today¨s fast-paced technology landscape.

　　Since the astronauts first saw outer space when they entered Earth orbit in 1950s, human beings have entered a brand-new space age. With the continuous progress in the way of exploring the universe, human beings have encountered many incredible things in space exploration. Let’s take a look at 15 cold knowledge that human beings have encountered in exploring the universe.for a long time 机械化功能付费出名 It has an extraordinary development speed, and I believe that the future will be as overwhelming as ever. https://www.zhanmeng.net/

　　1. There are laws in space.

　　You may not know that space is also subject to legal restrictions. In the 1960s, after humans entered space, space laws were formulated, mainly to ensure that space would not become a war zone and a testing ground for other destructive weapons.

　　2. Wrong image of the cave of the Patriarch.

　　The Capricorn Hole is a special area where scientists find that galaxies are extremely rare in the universe. However, the picture of the Capricorn Hole that people usually see is actually the Barnard 68 Nebula in Ophiuchus. The dark part in the middle is because the nebula blocks the illusion formed by light. The real Capricorn Hole is like the picture on the right. There are only more than 60 galaxies in the whole area, while there are at least 10,000 galaxies in other such spaces.

　　3. The human body can only live for 15 seconds in space.

　　Without the protection of the spacesuit, the human body can only survive for about 15 seconds in the pressure-free environment in space, which is the time that the oxygen in the body can be maintained. In this short time, it will experience blood boiling, body expansion and unconsciousness, but it will not be frozen at low temperature so quickly.

　　4. Blue sunset on Mars

　　Mars is the planet closest to the earth’s environment in the solar system. Curiosity probe showed a strange blue sky when shooting the sunset on Mars. NASA researchers said that because the dust particles in the Martian atmosphere have stronger ability to scatter blue light than other wavelengths, if the atmosphere contains water, it will be as dazzling as the earth.

　　Human footprints on the moon will exist for 100 million years.

　　Although the surface of the moon is covered with thick dust, the environment of the moon will hardly change. If only by natural erosion, the footprints left by astronauts on the moon can exist for at least 10 million to 100 million years.

　　6. Extremely cold environment in space

　　In the universe, the place where the stars can’t shine is very cold, and the lowest temperature will be infinitely close to absolute zero -273.15≧. At present, the coldest place known is the boomerang nebula, which is 5000 light years away, and the temperature here is only -272.15≧. In fact, the average temperature of the universe is only -270.42≧.

　　There are about 10 trillion galaxies in the universe.

　　At present, it is known that the Milky Way is only one of more than 2,000 galaxies in the Virgo Cluster. At present, there are no less than 10 trillion galaxies in the observed universe. Even so, the distance between galaxies is still very far, and the light of many galaxies has not yet reached the Milky Way under the constant expansion of the universe, so it cannot be discovered by human beings.

　　8. Size of the International Space Station

　　The space station is the largest man-made object launched into space by human beings. The weight of the International Space Station is an astonishing 840,000 kilograms, and the overall length is 109 meters, which is equivalent to the size of an ordinary football field. It was jointly manufactured by 16 countries.

　　9. The high cost of launching materials into space

　　The cost of transporting materials to the space station is very high, about $9,100-43,180 for each pound (about 453 grams) of goods sent. In July this year, Russia sent 2.5 tons of goods to the International Space Station, which can be said that the launch cost alone is an astronomical figure.

　　10. Sound in the universe

　　Space is not an absolute vacuum environment, but there are still particles and thin gases. NASA converts all kinds of signals in the universe into audio tracks through “data audibility” technology, and finally “listens” to the sounds made by various celestial bodies in space, but these sounds are very low and far below the limit that human ears can hear, and the original audio tracks must be amplified to hear them, so these sounds sound low, strange or particularly sharp.

　　11. Powerful magnetar

　　Magnetar is a special neutron star with a strong magnetic field. It can suck all the metal objects from you at a distance of 400 kilometers. Even the iron in your blood will be sucked out if you continue to approach.

　　12. Most parts of the universe are dark

　　After the Big Bang, the universe continued to expand, and the expansion speed even exceeded the speed of light, which led to the fact that the light in most places had not yet arrived in the 13.8 billion years since the birth of the universe, which is why human beings are always so dark when observing space.

　　There are many black holes in the center of the galaxy.

　　There is a supermassive black hole in the center of most galaxies. In fact, the number of black holes in the center of galaxies may be as many as tens of thousands. Scientists have found that there are a large number of small black holes around the black hole in the center of the Milky Way. These black holes have gathered a large number of material rings, which makes the center of the galaxy appear extremely bright.

　　14. Contact between the Milky Way and Andromeda

　　Although Andromeda galaxy has been approaching the Milky Way, it will take 4 billion years before the two galaxies collide directly, but Hubble Space Telescope has observed that the gas around the two galaxies has contacted, or the process of mutual fusion between the two galaxies has begun.

　　Everything in the universe is spinning.

　　From the operation of galaxies to the rotation of electrons around the nucleus, everything in the universe is rotating, and all the rules are based on this wonderful circular motion-starting from the starting point and eventually returning to the starting point.

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According to a report by Russia’s Lenta on July 16, Slutsky, chairman of the International Affairs Committee of the Russian State Duma (lower house of parliament) and leader of the Liberal Democratic Party, said on the telegram social platform that Moscow will not participate in the peace summit on Ukraine’s conditions.

According to reports, on July 15, Ukraine President Zelensky proposed inviting Russia to attend the next peace summit.

I’m setting tasks so that we can come up with a fully mature plan in November, Zelensky said. After the plan is finalized, everything will be ready for the second summit.

Reported that the U.S. State Department expressed support for Ukraine’s decision to invite Russia to participate in the next peace summit. (Compiled by He Yingjun)