There are more than ten days, the "dart", which is 11 million kilometers away, will hit the asteroid

On September 26, the DART spacecraft nicknamed "dart" was hit for the future of human beings. At that time, it will use its own 550 kg body at a speed of 6.6 kilometers per second to align a small asteroid that is 11 million kilometers away from us. Leave a pit with a diameter of about 10 meters on the planet.

The purpose of this suicide violence attack is very noble and significant

The asteroid hits the earth is one of the biggest threats of human survival and continuation. There have been many tragedies of species in history in history, which are related to the asteroid impact. There are countless asteroids in the solar system. There are tens of thousands of near -earth stars that have a significant threat to the earth. These asteroids pass by from time to time. Once they hit the earth, humans can't eat them.

In 1994, a comet named "Samak-Levi No. 9" hit Jupiter, and the impact energy reached 40 trillion tons of TNT equivalent, which was equivalent to the power of 3 billion Hiroshima atomic bombs. If you hit the earth, even if human beings are not extinct, they may return to the Stone Age. Therefore, the threat of responding and preventing asteroid impacts is a major event for all mankind.

The United Nations and many countries in the world are formulating plans and experiments to prevent asteroids, and China is no exception. These preventive measures are mainly under the premise of monitoring and warning, for small planets that may threaten human beings through nuclear explosion, impact, ablation, power drag, particle beam traction, quality driving Small star orbit, avoid hitting the earth.

Among them, the use of gravity impact is a relatively simple but obvious method. Many aerospace countries are conducting this research and test, and China is no exception. According to relevant sources, my country is likely to implement the spatial asteroid physical impact test around 2025 or 2026.

As early as 2005, Lao Mei conducted a space impact test. The collision was a comet with a small spacecraft called the "Deep Insulting" with a schedule of 430 million kilometers. Comet "Stept No. 1" hit it at a speed of 10.2 kilometers per second and completed the "first hit" mission of humans in space asteroid in space.

DART mission is the first time in history to defend the asteroid impact test

17 years ago, the impact of an ice -quality comet was to clarify the composition of the comet, and the task this time was the first collision of a rocky asteroid. The name of the task is "Double Planet Reset Test", referred to as DART for short, is the first task of studying and demonstrating the asteroid deflection method in history. The main process is to make Dart intentionally and with the premise that it does not pose a threat to the earth. The target small planet collides to change the speed and path of the asteroid.

The mission has been planned since 2012. It is led by NASA and participated in the European Air Bureau. It was not successfully launched on November 24, 2021 that DART spacecraft (nicknamed "dart") was successfully launched, and the launch weight was 610 kg.

The hit star is called "Di Timos". It is a double asteroid combination. Its main star is Didymos, with a diameter of about 780 meters and a rotation of 2.26 hours. 1 kilometer, it can be understood as a satellite around the main star, turning around every 11.9 hours.

DART is going to hit the second star.

This group of asteroids will not hit the earth. Based on its trajectory, it will pass by 11 million kilometers away from Earth recently. Because the test is safe, it is selected by NASA as the target of the impact test. "Darts" tracked in space to catch up with "Di Timos" for 10 months. It will be close to "Di Timos" before September 26, and between September 26th and October 1st The quasi -second star hit.

The result of the impact is to let the turnaround orbit of the second star 1%. Based on the actual data obtained by the impact, you can calculate what quality, speed, and angle of impact spacecraft adopted, which can hit the orbit of small volume, quality, and speed, so that when the asteroid attacks the earth in the future, gravity can be adopted by gravity. The impact method allows it to offset track and save humanity.

This impact test may be carried out many times in order to get detailed and accurate technical parameters, and evaluate the feasibility of changing the asteroid track by impact. In the end, humans can prepare several impactters, but when a small asteroid rushing towards the earth, it promptly launched this impact device for human beings to be exempted from the disaster.

This impact test will have a profound impact on the threat of future defense asteroid

Of course, in order to make the asteroid offset by impact, early warning of threatening to the asteroid must be achieved. At least a few months or years before the asteroid hit the earth to find dangers, this method can be used to save. If the asteroid is close to the earth and is about to hit the earth, it is impossible to escape with the current scientific and technological capabilities of human beings.

In addition, this impact may only be effective for relatively small asteroids. If the asteroid is too large, such as a few kilometers, even ten kilometers, or even tens of kilometers, this method has no effect. , I can only wait for the trial day.

In order to make this basket of eggs from being broken in a basket of the earth, there are far -sighted scientists trying to create conditions for interstellar immigrants. This is another topic, so I wo n’t pull it here. In short, the asteroid impact test is of great significance to human survival and reproduction. In order to observe the impact effect in detail, the Dart spacecraft also has a small cubic satellite Liciacube, which is manufactured and operated by the Italian Aerospace Bureau. When the device is close to "Di Timos", the small cubic satellite will pop up.

According to the report of the operating team, the "mini photographer" has been successfully released on September 11. It is now closely monitoring DART's flight dynamics, waiting for the collision of the world when September 26 arrived. Execute the mission given by humans ~ Pass the impact image data in front of the human beings on the earth.

At that time, some telescopes on the earth will also be aimed at the task goals and shoot the entire impact process. Has the Hubble Telescope and Weber telescope who are performing mission in space will participate in it? There is no news in this regard. But NASA has stated that the entire impact will be broadcast in real time.

In view of the well -known factor, some of the major media in my country are unlikely to broadcast, so what channels can be seen from this wonderful drama? You should pay attention to finding yourself. If there is news of time and space communication, he will be informed in the comment area as soon as possible.

Further reading: "Mini Photographer" LICIACUBE Introduction

The Double Planets of NASA Return to the team member of the DART-the world's first planetary defense test task-confirmed that the spacecraft's own "mini photographer" LICIACUBE (abbreviation of Italian light cube imaging) On the 11th, it successfully popped up from the box loaded by its spring.

Send signal to release LICIACUBE on Sunday evening at 7:14 pm -15 days before the DART plan hit the asteroid Dimorphos -Dart team members hold their breath to confirm the signal of Cubesat safely deployed. When the signal finally came near an hour later, the cheers sounded.

"We are very excited about this -this is the first time the Italian team has run its national spacecraft in deep space!" Simone Pirrotta, the Italian Aerospace Bureau Liciacube project manager, was responsible for contributing to and managing Liciacube. "The entire team is completely involved in the event, monitoring the state of satellite, and preparing to approach the asteroid flying. We hope to receive the first full -frame image and deal with it within a few days after DART influence. Use them to confirm the influence and add relevant information about the generated feathers-this is the real valuable value of our photos.

LICIACUBE (pronounced Lee-CHA-Cube) was designed, manufactured and operate by Italian Aerospace Corporation Argotec, and was involved in the National Institute of Celechia and the University of Bologna and Milan University. influences. It will collect the unique images of the fragments sprayed from the newly formed meteorite pit, provide valuable information, provide information for the computer model of satellite asteroid impact, and provide spectacular proofs for the success of the task.

Cube satellites carry two optical cameras: LICIACUBE unit key browser) and LeIA (like asteroid Liciacube explorators). Each will capture scientific data. These data will notify the microfeicon's autonomous system by looking for and tracking the target small planet Dimorphos throughout the DART encounters. The LICIACUBE team is now calibrating the spacecraft and its effective load at different rates and points at different rates and points.

The team will then load the final trajectory of the satellite trajectory. The trajectory will fly over Dimorphos about three minutes after DART impact. This minor delay will make Liciacube confirming the impact, observing the evolution of the feather flow, may capture the image of the newly formed impact pit, and view the opposite hemorphos of Dimorphos that Dart will never see.

The important thing is that these images will supplement DRACO (Dedimos reconnaissance and small asteroid camera for optical navigation) of DRACO (for optical navigation), which will help better characterize DART's influence on polarizing Dimorphos Effectiveness.

"We are glad to have LICIACUBE on the road-our brave little reporter, we hope that this will make valuable contributions to DART," DART's chief researcher, Maryland Lauorire's Johns Hopkins Applied Physical Laboratory Planet scientist Andrew Cheng said. "The content of witness and record will provide us with unique and important information, otherwise we will not see this information.

The LICIACUBE project is managed by the ASI Robot Exploration Task Office, industrial contractors Argotec S.R.I. and the scientific team of the University of Science and Technology from the National Institute of Celestial Physics, Milan University of Science and Technology, the University of Bobalus Patonop and CNR-IFAC.John Hopkins University APL Management NASA Planet Defense Coordination Office Dart task as a project of the planetary task planning office of the institution.DART is the world's first planetary defense test task. It deliberately impacted Dimorphos dynamic impact to slightly change its movement in space.Although this asteroid does not pose any threat to the earth, the DART mission will prove that the spacecraft can navigate to the kinetic energy impact on a relatively small asteroid, and it proves that this is a feasible technology that can be with the earth.Rotate asteroids during the collision, if you find it.DART will achieve its goals on September 26, 2022.

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