Science
Science
Reveal! The design life is 10 years, and 12 astronauts will be stationed successively
At 11:00 on April 29, Beijing time, China launched the Tianhe core module of the space station with the Long March 5B Yao-2 carrier rocket at the Wenchang Space Launch Site. What is the captain of the Chinese space station? How to build? Who will live? The reporter interviewed relevant experts to find out.
By witty lukas3 years ago in FYI
Harvard beauty professor: think that the soul is real, and there is a fifth-dimensional space in the world
When it comes to the soul, the traditional religions in ancient my country believed that the soul of a person is immortal after death and can still exist in this world, but we cannot see it with the naked eye. Moreover, in many mythological costume dramas or fantasy movies, everyone can hear the saying that the soul is out of the body. So, is there really a soul in this world? Let's look at an experiment first.
By witty lukas3 years ago in FYI
When will the 10-meter-diameter super-large space station manned capsule be launched?
The basic dimensions of the core module of the space station that have successfully entered orbit are: a total length of 16.6 meters, a maximum diameter of 4.2 meters, and a total weight of 22.5 tons. The interior can provide more than 50 cubic meters of living and working space for astronauts who enter it in the future, which has been greatly improved compared with the two Tiangong series space stations launched in the past. It is basically a direct upgrade from a single room to a three-bedroom level. After the successful launch and docking of the future No. 1 and No. 2 large-scale experimental modules, the astronauts' perennial casual activity space will be further expanded from 50 cubic meters in the early stage to 110 to 180 cubic meters. It is equivalent to upgrading from a three-bedroom to a small villa again, which can basically be said to exceed the maximum activity space inside the Mir space station launched by the former Soviet Union. In fact, in terms of the size and weight of a single main core cabin, the 22.5-ton class is already the largest in the world. Because neither the current core module of the Star of the International Space Station nor the command module of the Mir that year has exceeded the maximum level of 22 tons. The current extra 0.5 tons.
By witty lukas3 years ago in FYI
Why do organisms generally grow larger in an oxygen-rich environment?
The day before yesterday, Hanhai Langshan (Hun Langshan) mentioned that the earth's current atmospheric oxygen content is only 21%, but this is not the era with the highest atmospheric oxygen content in the earth's geological history. The era of the highest oxygen content in Earth's geological history is thought to account for 27% to 28% of the atmospheric content, which is more than 30% of the oxygen content at sea level today. It is thought that there may be two such peaks of oxygen enrichment. One appeared in the Carboniferous period between 360 million and 300 million years ago. Plants at this time grow very large because of the rich oxygen. Ferns are often tens of meters to hundreds of meters high. After the death of these giant plants, a large amount of accumulation was generated, which is the largest source of coal formations today, so this era is called the Carboniferous. Another peak of oxygen enrichment may have appeared in the Jurassic period 200 million to 140 million years ago, when the world was full of giant reptiles, becoming the most prosperous era of dinosaurs. Therefore, once the earth is enriched with oxygen, the size of both plants and animals will increase simultaneously on a large scale. This is already the basic consensus. But the problem is,
By witty lukas3 years ago in FYI
Volcanoes are natural incinerators. Can we use volcanoes to burn garbage?
Volcanoes are one of the most unforgiving natural phenomena on Earth. If you fall into the center filled with magma, the body will quickly blister and disappear without a trace. Then someone will say, since volcanoes are so good at processing things, why don't we use this natural "incinerator" to process our garbage? It's easier said than done, but it's not that simple...
By witty lukas3 years ago in FYI
Tianhe is not as good as the International Space Station? The breakthrough of this key technology doubles the power generation
On April 29, the Long March 5B carrying Tianhe core module successfully lifted off from Wenchang, Hainan, opening the prelude to the construction of a new generation of large-scale space stations in China. Compared with the previous Tiangong-1 and Tiangong-2, our new-generation space station this time is not only large in size, many cabins, and complete with equipment, but also has a long time in orbit. It is initially expected that it can serve for more than 10 years. As for how long it can exceed 10 years, it depends on our maintenance level. According to China Aerospace's past redundancy tradition, it is not uncommon to estimate that the service time has doubled several times.
By witty lukas3 years ago in FYI
The earth is spinning, if the helicopter hovers in the air for 12 hours, will it reach the other side of the earth
Due to the needs of study, life and work, people often need to take various means of transportation to and from various cities. When riding a high-speed train or a car, it is often very boring, so some people will be curious, if we jump from the car and vacate on a high-speed train or car, will it hit the car body? Or, throwing an object from the front row of the high-speed rail to make it hang in the air, because the high-speed rail is always running at high speed, will it cause the object to hit or fall into the back row?
By witty lukas3 years ago in FYI
What would happen if the earth stopped spinning? Scientists: This day will come sooner or later
Whether in nature or in the universe, motion is absolute, and stillness is relative. Even if life on earth does not actively move, the cells in its body stop moving all the time. Although the celestial bodies in the universe are not living bodies, they are in motion all the time. Satellites revolve around planets, planets revolve around stars, and stars revolve around the center of galaxies. Some planets also rotate while revolving, and our earth is a typical case.
By witty lukas3 years ago in FYI
The Soviets once wanted to drill through the earth, and why didn't they drill down to 16,262 meters?
Nowadays, human beings are exploring more and more unknown areas. Our human Voyager spacecraft is about to fly out of the solar system and is already very far from the earth. Moreover, the moon has been logged on many times, and several planets near the earth are approached by artificial probes. Humans have made great achievements in exploring space, but human understanding of the earth is not very deep. For example, what will be under the earth that we step on? The current internal structure of the earth is only a speculation, and no artificial probe has ever entered it, so many things cannot be easily concluded.
By witty lukas3 years ago in FYI
What strange things happen to people after they die? Not only can "sing and dance", but hair and nails continue to grow
Do scammers really exist? It has been recorded in relevant historical materials that the deceased will be buried with some jade or rice shells in their mouths. One is to let the deceased rest in peace, and the other is to seek auspiciousness, because there has always been a very strange "deceitful corpse" in the folk. ”, and in some film and television works or literary works, there are also some terrifying episodes about cheating corpses. This caused many netizens to have such questions: "Do corpses really exist in real life?"
By nally norris3 years ago in FYI
In just half a century, more than 800 stars have disappeared mysteriously, and alien civilizations are building Dyson spheres?
If suddenly one day, the night sky is darkened, it will be a devastating thing for the universe. Because the stars we see are other stars in the universe.
By nally norris3 years ago in FYI
