Lucy task: What will the answer will be the secret of the "time capsule" of the solar system?

"Lucy" is a group of scientists named the ancient human fossils unearthed in 1974. This is a skeleton of a female human ancestor, which provides important clues for studying the history of human evolution. The "Lucy" is a detector named after this name. It is developed and launched by NASA (US Aerospace Administration), and traveled to Jupiter's orbit Troy group for explore.

Its task is to understand the origin of the planets such as the solar system and the earth. It is a larger pattern and provides clues for the history of the evolution of the solar system. Therefore, it is the same as the role of the ancestor "Lucy". NASA's scientists use this detector with this name, which is more expected to Lucy.

Lucy successfully set foot on the long journey on October 16, 2021. This way, it will explore for 12 years in the dark and deep space. According to NASA, its task is to find the "time capsule" of the solar system. So what does this "capsule" look like and how to find it? Let's understand together.

First understand what is the Troy asteroid group

Troy is a city -state in ancient Greece. The reason why it is famous is because the ancient Greek poet Homer described the Troy War in the epic "Iliate". The most famous of which was the "Trojan Market". To put it simply, it is the king of Greek Sparta to report the hatred of Prince Troy's wife and take the army to attack Troy City, but because Troy is strong, it will not be able to attack after 10 years of attack. Successful.

The specific method was that the Greek army pretended to retreat, leaving a huge Magrara who could not leave, and was pulled into the city by the Troy as combat. It was night, a group of Greek Warriors hiding in the belly of the huge Trojan, while the Troy people relaxed their vigilance for the victory, they slipped out of the door to open the gate. The city steps into ruins.

Later, Trok Trojan was impressed by the symbol of scams. Modern computer malware and viruses were also known as Trok Trojan, referred to as "Trojan".

Scientists call this asteroid on the planet track as the Troy group asteroid, probably that these asteroids are a bit like the Greek warriors hidden in the horses' belly in Trojan horses, and they have been hidden in the same planet's track and follow the planet operation to run with the planet operation. One day, it will suddenly be difficult to attack, and attack the planet.

The word "group" of Troy's asteroid shows that Troy is not a small planet, but a group of small planets. The earliest asteroid was found at Jupiter's orbit, which were located at the Lagram of Jupiter. The so -called Laglang day point is the gravitational balance point between the sun and a planet. Each planet has five Laglang Day points, which is represented by L1 ~ L5. Among them, L1 ~ L3 is connected to the two celestial bodies, and L4 and L5 are on both sides before and after the planetary turn.

As early as 1904, Barnard could observe the Troy asteroid of Jupiter's orbit, but it did not attract attention at the time, so it was not recorded in the case; in 1906, German astronomer Max Wolff discovered one in the sun-Jupiter Lag The asteroid at Langri Lot L4 was named after the hero Achilles in Iliate's drama.

After that, more and more small stars discovered in Japan-Mi Lawlan Day L4 and L5 were named after the name of the characters in Homer's epic follows. The asteroid was collectively referred to as the Troy group asteroid.

Jupiter's Troy asteroids are mainly distributed on Jupiter's L4 and L5 points, located in front of Jupiter's rail and a 60 -degree symmetrical position. As of September 2007, there were 2239 Jupiter Troy asteroids that have been confirmed, of which 1192 were L4 and 1047 at L5.

With the continuous deepening of observation, astronomers found that the phenomenon of the Troy asteroid group is not unique to Jupiter. For example, there are 29 foundation on the track of the Neptune to the orbit. Grand Sunday. These asteroids are shared with the planet with the planet, and the planet is not far from the sun.

Now the earth has also found two kinds of asteroids, one was discovered in 2011, called 2010TK7; one was recently discovered, called 2020xl5, which are located in the Lagram Sonte L4 position.

Why are there very few Troy asteroid on the earth's orbit? This may not be the case, but that asteroids such as the earth are more difficult to discover. Because the Troy asteroid is observed on the earth, you must use the telescope to stare directly at the sun to find them, and these asteroids are relatively small, the anti -photo rate is very low, and it is difficult to find in the strong light of the sun.

Scientists believe that with the improvement of observation technology, more Troy asteroids will be found on the earth's orbit. These findings have reason to believe that the Troy asteroid phenomenon is a common existence in planetary orbit. Therefore, no matter which planet track is this type of asteroid, this type of small asteroid is collectively referred to as the Troy group asteroid.

Why is the Troy asteroid is the "time capsule" of the solar system?

All the planetary systems were born around the stars, and the birth of the stars originated from the contraction of the huge nebula (universe dust). The result of the contraction is that one or more stars were born at the core. Adsorbing into planets and various small celestial bodies. In many of my past articles, I have introduced the origin of the universe, the origin of the solar system, the origin of the earth, and the history of their evolution. Scientific research believes that the Troy asteroid is the remaining slag of the formation process of large planets, which is likely to be the basis for the formation of planetar satellites. Because these asteroids or satellite tracks are unstable, they may pose a threat to the planet. Some scientists believe that the planet -like planets that hit the earth 4.5 billion years ago may be hidden at the Lagram of the Earth's Ragram, and they hit the earth due to the track of the track.

Scientists call this planet that hit the earth as "Jia". It hit the sky -high contact with the earth, which led to the tilt of the ground axis and formed a 23.44 -degree yellow red and red angle. Since then In autumn and winter, the lava and dust that collided into the moon made the earth a greater tide. These variations and conditions have given the earth a birth of the earth, and the life of the earth is born, and only you and me today.

Therefore, scientists believe that these Troy asteroids are the products of the same period as the sun and planets. They are the earliest fossils of the solar system. The passwords formed by the solar system are hidden on it, so it is the "time capsule" of the solar system. In -depth analysis and understanding of such "time capsules" can understand the past and present life of the solar system more clearly.

As a result, Lucy came into being, and it shoulders the heavy responsibility of human exploration of the solar system, the earth, and where the human beings comes from, and where they will go in the future. Of course, this exploration is only a small piece in the natural overall exploration of the universe. In the future, all the small pieces that will be explored will be spent in the future to glimpse the mystery and full picture of the world and their own.

The specific task of Lucy

The Lucy detector is an asteroid detector developed by NASA. The main task is the first Troy asteroid group that human beings inspect Jupiter. The total investment in the mission reached $ 981 million, which looked a lot, but it was called the most tedious task in NASA history.

This is because Lucy's task is very heavy. It is not like the previous asteroid detectors. It only needs to detect one or two small asteroids, but instead of examining 8 small planets. In this way, the cost of each asteroid is only more than 100 million US dollars, so it is called the cheapest interstellar exploration in history.

The height of the Lucy detector is about 5 meters, the launch weight is about 1550 kg, and the dry weight is 821 kg. The main instruments carried on it are: thermal transmission spectrometer, remote reconnaissance imaging instrument, infrared imaging spectrometer, multi -spectrum visible light imaging camera, etc. Of course There are also necessary navigation and communication devices, power batteries, etc. that are connected to the earth.

One of the major features of Lucy is that it is equipped with two huge circular solar panels. After the expansion, the total width reaches 14.25 meters, and the effective area reaches 51 square meters. Jupiter Troy's asteroids are less than 3%of the earth's sunlight. In order to ensure the power requirements of Lucy, such a huge solar device is equipped. This solar panel can get 500 watts of electricity under the dark sun of Jupiter, and Lucy can ensure that all of them can be normally needed as long as 82 watts of electricity.

It seems that the conservative coefficient is large, but the situation after launch has verified the foresight of scientists.

In the 12 years of performing the task, Lucy will be accelerated three times through the earth's gravitational slingshot effect, and eventually allows his speed to reach 560,000 kilometers per hour, that is, 155.6 kilometers per second. These three times around the earth's "circles" seem to make the circle bigger and bigger, and the circle finally entered Jupiter's orbit and drilled into Jupiter's Troy asteroids.

A series of time to fly the earth is: October 2022, the second December 2024, and the third 2039. In fact, after flying the earth for the second time, Lucy will go straight to Jupiter's orbit. In April 2025, Lucy will perform the first asteroid detection task during the rush to Jupiter's track.

This asteroid is called Polymele, not the Troy asteroid of Jupiter's orbit, but one of the small asteroids between Mars and Jupiter's orbit. Polymele is very small, only 27 kilometers in the widest, but it is amazing that there is a satellite! On March 27 this year, the Lucy team discovered a "small moon" that runs around the small asteroid 200 kilometers away from the asteroid, with a diameter of only about 3 kilometers.

As a result, the task team is very excited. The Lucy has not yet shot, and it has begun to follow. It can be expected that when the Luci opens his eyes to see those asteroids that are getting closer, it will definitely bring more to humans to humans more surprise.

It is a pity that it is not a good story around the Lucy. In fact, as soon as it starts, it encounters trouble. According to NASA news, the Lucy had a failure shortly after the launch. When the solar panel was expanded, only one was completely opened and locked, and the other was not fully expanded.

Soon, NASA's scientists found the root cause of the battery board failure: a rope used to open the battery plate knotted. Then formulate two solutions, that is, repair this failure through remote control. In order to be lost, it is necessary to use the high -fidelity software simulation repair process to ensure that everything can be lost to carry out remote control repair operations. After 13 simulation tests, the repair task team worked carefully in May and June this year, and finally achieved 7 repair efforts, and finally achieved more satisfactory results. Although the faulty battery board has not been fully locked, the rope has been tightened again, and the expansion has reached 357 degrees, which is 99%of the 360 ​​-degree fully expanded, which can ensure that the task is not affected.

Now the realization of the three -step task: In the first step, the first main asteroid in 2025 was surveyed; after a small test, in around 2027, the L4 Troy asteroid group arrived at Jupiter's orbit. Four of them are predetermined; followed by the long -term transition, reaching the L5 asteroid group, and completing all asteroid inspection tasks in 2033.

After the 12 -year exploration task is completed, if Lucy still has more power, NASA will assign it to it with new tasks. These lonely AI heroes who are far away are the most loyal friends of human beings, and they never bargain with humans. Their ultimate mission is to dedicate themselves to human beings and eventually disappear into the vast space. Perhaps after the death of human beings in the future, they are still adhered to their commitments to human beings, and silently testify for the existence of human beings.

Here, I wish Lucy all the way to go all the way, and continue to bring new discovery and surprises to humans in the next ten years. In this regard, what you think, welcome to discuss and comment.

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