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Free Web Novel,Novel online - All in oicq.net -> Sci-fi -> Lost in the stars Volume 4: Walking in the Solar System Chapter 43: The Mysterious Moon (1)
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- Chen Deqi has a background in astrophysics, is proficient in observational cosmology, and can understand and question related articles. This shows that he is a professional and cannot be compared with a popular science layman like Li Zhuang.
The so-called popular science materials are all self-supporting hypotheses, and even some unrecognizable things have explanations such as "painting ghosts". These cannot be truly refuted by non-professionals. What they can use are mostly philosophical inferences or incoherent curses, but what is the use of these?
Chen Deqi's article is full of the usual shortcomings of scientists. It often contains large paragraphs of numbers and formulas. I don't know if he is deliberately tormenting computer experts. Fortunately, he wrote something that can be understood.
"The Bathurst-class high-resolution lunar probe found remnants of the Yankee Apollo program, including the remains of NASA's lunar module from a year ago. Their operational technology has regressed; the field needs experienced astronauts , not simply the inheritance of knowledge and experience can work.¡±
"That's true. If you don't practice for a long time, your hands will easily become raw and your brain will become stupid easily. It's impossible to think about everything." Li Zhuang felt the same way. NASA sent people to the forward station a year ago, but they are very lazy now. Even the spacecraft is an upgraded version of the Apollo series. There was a slight problem with the sealing of the lunar module, which scared the two astronauts almost to death. Fortunately, it was solved, but the time for activities on the lunar surface was shortened by one-third than planned.
Citigroup¡¯s purpose this time is clear, which is to obtain all the information needed to establish a lunar base. The lunar module weighs about thirty tons. The reaction force control system, ascent and descent propulsion systems all use solid propellants with new nano-burning rate catalysts added, which is finally an improvement over its predecessors.
Nuclear fission rockets are easy to use, but they can only be used as the main power of the spacecraft. The rest must rely on traditional chemical engines. There is almost no atmosphere on the moon, so there is a huge temperature difference between day and night. In places where the sun shines vertically during the day, the temperature can be as high as 127c; at night the temperature can be as low as minus 183c.
In this case, a solid propellant with a low specific impulse is the best choice. The asa Katje-class lunar landing exploration spacecraft uses the same solution. The manned spacecraft lunar landing module to be launched in August will use the Katje-class solid rocket motor.
NASA¡¯s new lunar module is twice the size of the Apollo series and can carry more samples. There is no way around it, as long-distance travel fares are extremely high. Due to the failure to build a deuterium-helium fusion demonstration power plant, the shares of the Lunar Development Company are currently not selling well, and the additional issuance has not passed the review. Citigroup does not have sufficient domestic funds, and is paying for the greed and arbitrariness of the past.
¡°In addition to the activities of earthlings, there are some other signs in the photos taken by the Katje class. The possibility of aliens cannot be ruled out. These need to be verified by astronauts on-site after the lunar research base is established.¡±
"Hey, aliens, no matter what the ambiguity is, everything will reveal its true face in the face of evidence." The computer expert sighed and continued reading. In addition to the common rumor analysis and Katje-level on-site investigation, this article contains He also expressed his doubts.
The internal structure of the moon has always been a mystery. The hollow ball theory is noisy, and this is an important theoretical basis for the lunar man-made spacecraft theory. NASA experts have refuted the rumors and said that the moon has a solid iron-rich core and a liquid outer core, which is very similar to the Earth. Their data are all feedback results from moonseismometers, and there seems to be no problem in theory. However, the Katje class repeated the moonquake experiment. Experts from the ASA Lunar Research Institute looked at each other because there were differences with what NASA announced.
Several artificial moonquake experiments and analysis of experimental records have come to a similar conclusion: there are quite a few holes inside the moon. It is not yet known whether these are natural caves or man-made, because the geology of the moon itself is very special.
The material composition and landform of the part of the moon facing the Earth are very different from that of the part facing away from the Earth. The crust of the former side is much thinner than that of the other side, and it has vast plains made of basalt. These plains are called maria, and astronomers believe they are the result of long-ago volcanic eruptions on the moon's surface. The latter has a much thicker crust, more craters, and almost no maria.
According to the calculations of astrophysicists, the higher density basalt in the lunar maria has caused the moon's center of mass to be out of the geometric center and deviated by about 1.6 kilometers. However, the process of migration is not yet clear.
When a solid object is hit, two types of waves can be measured, one is a longitudinal wave and the other is a surface wave, while for a hollow object only surface waves can be measured. "Longitudinal wave" is a penetrating wave that can penetrate an object and be transmitted from one side of the surface through the center of the object to the other side. "Surface waves", as their name suggests, can only propagate on extremely shallow surfaces. After long-term recording by the Katje-class moonseismometer, it was found that the number of surface waves was much more than that of longitudinal waves.
Australian media interviewed asa about this matter. Chen Deqi did not give a definite answer. Instead, he informed another piece of news: the Raleigh-class solar system probe was launched in a small areaRemains suspected to be Theia were found in the planetary belt.
"Theia is a hypothetical planet about the size of Mars. It is related to the origin of the moon. It is the product of a highly perfect planetary collision theory. This planet is very likely to have been destroyed in the early stages of the formation of the solar system. Regardless of whether the moon is hollow or other structures, it is easier to argue that it should not be where it is than to explain its existence.¡±
Seeing this, Li Zhuang couldn't help but check the popular science information, because Chen Deqi did not explain the "planetary collision theory", but instead listed a bunch of data and calculation formulas to illustrate the credibility of the "planetary collision theory".
There is a lot of messy information on the Internet, but computer experts generally read articles from scientific institutions, because the possibility of adulteration with private information is much smaller, and the data is less prone to errors.
The eight major planets in the solar system all have satellites, which is the result of astronomical observations, but the earth is unique because the diameter of its satellite moon is 27% of its own, while the diameter of other planetary satellites does not exceed 5% of its parent star. Many scientists believe that the water on the earth comes from comets and is not originally present on the earth.
The earth itself is very mysterious. The two powerful big brothers Jupiter and Saturn protect the earth from wind and rain. They also attract comets to add to the earth's oceans, and a huge satellite helps form the earth's ecosystem.
Various coincidences have given the earth an environment suitable for the growth and life of carbon-based organisms. However, too many coincidences have made scientists doubt that the earth is a modified planet and the moon is an artificial celestial body.
Putting aside the speculation of transforming the planet, the impact of the moon on the earth cannot be underestimated. It is an indispensable partner of the earth. There are three main reasons. First, the tidal force of the moon can stabilize the tilt angle of the earth's rotation axis, thus making the earth's climate relatively stable; second, it has an impact on the earth's atmosphere; third, it allows the earth to have a huge magnetic field. Without this magnetic field, , cosmic rays are enough to kill the seedlings of life on Earth in its infancy.
People¡¯s imagination is very powerful, and there are always some people with super high IQs among humans. There is no theory that cannot be understood, it¡¯s just a matter of time. No matter how you guess, there are people on the earth now, the moon is at its current position, and humans have been studying the earth-moon system for hundreds of years, forming numerous theories.
Whether the Earth is lonely or not is unknown based on current astronomical and aerospace research and cannot be concluded. However, this frequently seen moon has aroused the interest of countless people. It is the largest celestial body closest to us.
Where did the moon come from? Its origin is an age-old question. The hypotheses about the origin of the moon since the 18th century can be summarized into three categories: the theory of homology with the earth, the theory of the separation of the earth and the moon, and the theory of the capture of the earth and the moon.
"The theory of homology" is the earliest hypothesis of the origin of the moon. It believes that the moon and the earth have the same origin, and that the early solar system was born from nebulae at the same time.
"The split theory" believes that in the early days of the formation of the solar system, when the earth was still in a molten state, the rotation speed of the earth was so high that part of the material was thrown out to form the moon. Some people even think that the Pacific Ocean is the scar left after the moon separated.
The "capture theory" proposed after the "homology theory" and the "split theory" believes that the moon and the earth were formed in different places. By chance, the earth captured the moon that moved nearby and became its own satellite.
These three hypotheses have all been supported by some experimental data, but they are difficult to justify on certain issues.
With the development of observational cosmology, in the mid-1980s, Citizen astronomers proposed a new hypothesis of the formation of the moon that broke away from the constraints of the above three hypotheses. This hypothesis holds that in the early stages of the formation of the solar system, celestial bodies the size of the primitive Earth and Mars were formed in a space roughly equivalent to the existence of the current Earth-Moon system. During their respective evolutions, they formed metallic cores dominated by iron. and the mantle and crust composed of silicates.
Scientists infer that Theia was originally a planet that had the same origin as the Earth and was orbiting the Earth. It moved in the same direction as the Earth, but 60 degrees faster or slower than the Earth. This position is called the Lagrange point in astronomy, and it is the point where a small celestial body can achieve a stable balance between two large celestial bodies.
This phenomenon of planets sharing orbits may seem strange, but in fact it is not uncommon even in the solar system. There are two groups of asteroids in the orbit of Jupiter, Trojans and Hellas, located 60 degrees in front of and 60 degrees behind Jupiter.
Theia was expected to become a group of asteroids like the Trojan asteroids. However, its initial size was larger, so it continued to attract the surrounding cosmic matter, and its size increased day by day. As a result, its orbit became unstable, running faster and slower, and deviated. He reached the balance point and finally fell to the earth.
This collision was earth-shattering. Theia itself was completely destroyed, and most of it was annexed by the Earth. However, the Earth also suffered heavy losses and was knocked out of orbit. There's a lot of magmaAfter the violent collision, it broke away from the earth. The flying gas and dust fell around the earth under the influence of the earth's gravity. Through accretion, they first formed several small celestial bodies, and then formed the moon like a snowball.
"The planetary collision hypothesis" is compatible with the advantages of the three classic hypotheses, can explain most of the phenomena of the Earth-Moon system, and has been supported by some geochemistry and geophysics experiments, but it has not been finally confirmed.
As long as the remains of Theia can be found, the mystery of the formation of the Earth-Moon system can be solved. In recent years, space agencies including asa have launched nearly twenty solar system probes, hoping to find clear evidence.
ASA's first Raleigh-class solar system exploration spacecraft was launched seven years ago. As of last year, a total of seven ships have been launched. They weigh about five tons and consume 200~2000w. They all use the top technology of United Technologies Corporation. One ship is more than One advanced. These detectors are working normally so far. The Raleigh 1 once malfunctioned, but was repaired by the onboard intelligence.
The Raleigh-class exploration spacecraft is managed by the Raleigh Laboratory of the asa Institute of Space Science. The information it transmits is very rich. As a result, the science and technology edition of the Weizhou Daily has amazing sales. The Raleigh Laboratory has established cooperative relationships with many well-known media at the same time. The Raleigh 3 equipped with a multifunctional elemental spectrum analysis system was the spacecraft that discovered the suspected wreckage of Theia. Both it and the Raleigh 4 were specially built to detect the asteroid belt.
After getting the data, asa contacted many well-known astronomers. They all believed that it was most likely the remains of the planet Theia, because no planet with a chemical composition and mineral composition similar to that of the Earth has been found in the solar system. But the universe is infinite, and we dare not conclude that the discovered asteroid is the target we are looking for.
Scientists speak very rigorously, but the media and ordinary people don¡¯t care much about these strictly limited words. The "planetary collision hypothesis" is very popular. The "lunar man-made spacecraft theory", which is originally a partial theory, has almost no market, but it still exists tenaciously. The reason is the age of the moon.
The age of some rocks on the moon exceeds the age of the solar system according to the potassium-argon dating method, that is, it is greater than 4.5 billion years. This is one of the supporting arguments of the "lunar spacecraft theory".
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