In this paper, I participated in the series of solicitations of the great astronomy and Astronautics of Recordunkown science
The universe is vast and has numerous celestial bodies. If you want to ask which kind of sky is the most common and dazzling, I believe many people will answer: stars. Yes, stars are a kind of universal celestial bodies in the universe. The number of stars is too large to be estimated. The number of stars in the Milky Way alone is not less than 10 million. And the sun is one of tens of millions of stars.
The existence of the sun created the solar system, created the eight planets, and made the earth have the conditions for the birth of life. Therefore, life on earth and the birth of human beings are closely related to the sun, and human survival is inseparable from the sun. In a sense, the sun is the mother of life on earth. Since ancient times, people have respected and worshipped the mother sun, so many tribes in ancient times used the sun as a totem.
With the development of science and technology, with the advanced observation equipment, people have more and more knowledge of the sun. However, the temperature of the sun’s surface and orbit is very high due to the internal nuclear fusion, and the observation ability of astronomical telescopes and other observation equipment is also very limited. It can be said that man knows very little about the sun.
If you want to ask which celestial body in the solar system is the most mysterious, I believe it is the sun. Let’s not talk about the mystery of the surface and interior of the sun. Even though the coronal layer formed by continuous ejections from the surface of the sun, there are still many secrets we don’t know. For example, the temperature of the sun’s surface is only 5500 degrees Celsius, while the temperature of the corona, the outermost layer of the sun’s atmosphere, is as high as 2 million degrees Celsius.
Why is the corona so much hotter than the surface of the sun? What is its energy source? In order to explore the sun and learn more about the sun, scientists launched a detector to the sun billions of years ago, but due to the limitations of science and technology, the detector is still unable to get close to the sun. On August 12, 2018, NASA launched the Parker solar probe, a masterpiece of the latest human technology.
Parker detector has a lot of powerful functions, the most important thing is that it can be closer to the sun, and the process of Parker approaching the sun is also realized by 24 close flyovers of the sun, each of which is a gravitational acceleration. In early October 2018, it flew over Venus for the first time and completed the first “gravitational catapult”. At 1:50 p.m. EST on September 1, NASA’s “Parker” solar probe passed the perihelion for the third time.
However, there is an obvious difference between the third “Parker” flyby and the first two, that is, the detection time has been greatly extended. The original planned detection time is about 11.6 days. However, after the end of the first two “scientific stages”, researchers unexpectedly found that the communication system of “Parker” is more powerful than expected and the data transmission speed is faster. As a result, Nasa decided to significantly extend the scientific exploration time to obtain more valuable data. As a result, the “scientific phase” of the third perihelion flight was adjusted to 35 days, more than three times the previous one. Such a long time window means that when Parker turned on the instrument, it was twice as far away from the surface of the sun as planned.
After completing the solar skimming mission, Parker will implement the “gravitational catapult” again in December this year. The orbital height of the four degree solar skimming will be about 4.5 million kilometers lower than that of the previous three times. It is reported that the orbit height of the “Parker” during its last solar eclipse was only about 6 million km. This distance is already amazing. Such a close distance can preliminarily explore some mysteries of the corona, and may be able to find the energy source of such a high temperature in the corona.
Of course, the plan of human exploration of the sun has just begun. If we want to really uncover all the mysteries of the sun, we may have to be completely close to the surface of the sun or even land on the sun. In order to achieve these, the important thing is the material. As long as the high temperature resistant material is continuously upgraded, the detector will be able to get closer to the sun until it completely enters the inside of the sun and lands on the sun.
Landing on the sun seems like a very distant dream, but in fact it is not far away from us. We should know that the development speed of human science and technology is amazing. It took only about 300 years from the first industrial revolution to the present third. For hundreds of years, our technology has developed to the point where we can go out of the earth, explore the solar system and explore the universe.
If we give human beings another 300 years of development time, we may enter the fifth technological revolution. At that time, human beings may enter the second level civilization. When they reach the second level civilization, the collection and utilization of stellar energy may become the mainstream. At this time, human spaceships may be able to get in and out of the sun, and the mystery of the sun will be revealed.
Parker solar detector is not the first solar detector of mankind, and it will not be the last one. I believe that in the near future, with stronger high temperature resistant materials, we will launch new detectors. At that time, we may be able to get close to the surface of the sun and really see the scene of the surface of the sun. What kind of spectacular scene will it be?
Guys, what do you think of this? Welcome to leave a message below to discuss and express your opinions.