Speed 22530 km/h The spacecraft deliberately hit a small planet

There are often "small asteroids hit the earth" in science fiction movies, and in reality, "Earth Spacecraft hit the asteroid."

On the 26th, the Aerospace of NASA (NASA) deliberately hit a small planet to test the defense technology of "Asterior Star Hit the Earth" and change the asteroid track.

NASA said that this is the first time in the world to protect the earth's threat from the threat of the asteroid impact. John Hopkins Applied Physical Laboratory Director of the Space Exploration Department, Bobby Blaun, said: "What a great day for humans."

The main characters in this task are DART spacecraft, Draco navigation cameras, LICIACUBE cube satellites, and asteroid Dimorphos.

Dart:

Space ran ten months

Life is just that one collision

At a speed of 22530 kilometers, I was aimed at the asteroid Dimofz, hitting one end, and the world was silent, and I didn't even hear the sound of impact.

If on the earth, this speed will make a loud noise and burns a fireball, while in space, there is no air, no such momentum.

I look a little bit, 1.2 meters × 1.3 meters × 1.3 meters, but there are two wings, which are 8.5 meters, using new solar cell array technology.

When I hit, I weighed 570 kg.

Dimfus is a hundred times larger than me, 160 meters in diameter, and the quality is estimated to 4.8 million tons. This collision is like a chick hit the stone mortar.

The time of impact is also my last moment:

In September 2022, at 19:14 on the 26th of Eastern United States, at 7:14 on the 27th Beijing time.

My nickname is DART. According to the convention, the first letter of the word Double Asteroid Redirection Test is composed of the first letter of the letter. DART means darts, or slamming.

I departed from the Vandenburg Space Army Base in California, California on November 23, 2021. The "Falcon 9" rocket of SpaceX's "Falcon 9" rocket sent me to the sky and used a new technology solar ion promotion system during the flight. Humans have been tested for 7 years before. Now, the climax is here.

After walking in space for a full 10 months. The only mission of my life was to make a special trip to Dimofz, 11 million kilometers away from the earth, and hit it.

This collision is the first collision of human beings to hit natural celestial bodies in ancient times.

Unbelievable instant glory.

DRACO:

Accompany you, dart, accompany you

At the same time, he hit Dimphus and hit his body and broke his bones at the same time. DART and I have been flying in space for 10 months.

My work is navigation and positioning. With the new technologies of autonomous real -time navigation algorithms, Dart is directed to small asteroids to determine the place and geological condition of the impact, and capture the high -resolution images of Dimfus surface before the impact.

My nickname is an abbreviation of long names: Didymos Reconnaissance and Asteroid Camera for Optical Navigation (Di Dimos Investigation and Optical Navigation Star Camera).

When DART wings, I am a big round eyes. I am a narrow -angle camera with a hole diameter of 208 mm and a vision of 0.29 degrees. I am very focused. DART hits a heart, and I keep shooting, each second, like a video. The asteroid photographed one hour before the impact is just a light spot, and then it is getting bigger and bigger.

The picture of the stone beach on the asteroid was taken 2 seconds before I hit, 12 kilometers from the planet. The last one was shot 1 second before the impact, only a small sloping stone beach was displayed. At this time, at the task control center of the application physics laboratory in John Hopkins, Maryland, the signal was lost and the screen was red. The excited people applauded and bouncing.

Liciacube:

You hit it, I jumped the car first

Dart weighs 570 kg during impact, but weighs 610 kg at the time of launch last year. Because 15 days before the impact, I jumped on the 11th.

I was sent by the Italian Aerospace Office, named Light Italian Cubesat for Imaging of Asteroids (Light Italian asteroid imaging cube satellite, nicknamed LICIACUBE).

I have a good vision, I can take black and white photos, or I can take color photos, because I have two eyes, which are two cameras. One is called LEIA, a narrow -looking full -color camera, and the other is Luke. It is a wide -looking RGB camera.

Leia and Luke are the names of the protagonist in the movie "Star Wars", and my name abbreviation.

Jumping before hitting is of course designed in advance. I need to observe the impact effect at a safe distance: After 3 minutes of impact, I crossed Dimfus from 40 kilometers to 80 kilometers, shooting the spraying feathers that hit, and shooting the pits of the asteroid.

Weber Space Telescope, Hubble Space Telescope and NASA's Lucy Detectors also watched from a distance.

Although I didn't break it, it was also the fate of throwing. In the future, I will stroll around in space. Human beings will call me "space garbage". The European Space Administration will send a space boat to Hera to replace me.

Dimorphos:

I thought it was so old -fashioned

Who would be hit by the waist

I am the protagonist of this film.

My name is Dimorphos. I used to be a supporting role before, turning around Di Dimos, and we turned around the sun. Di Dimos is 780 meters in diameter, and I only have 160 meters. It is said that our two names mean twins.

Since ancient times, we have turned quietly like this, thinking that we will always move to the old land in such a posture.

But on April 11, 1996, Joseph Montani discovered us. He is a space observation researcher at the National Observatory of Kitta National Observatory.

I was promoted from the supporting role to the protagonist because humans decided to hit me.

Human beings have a obsession and always think that asteroids will hit the earth. Studies say that dinosaurs are extinct, which is the terrible consequence of Xiaoxing hitting the earth. Human ideas are intended to deal with various means to change the direction of the small asteroid flying to the earth, or destroy the asteroid.

The orbit I was walking may occasionally approach the orbit of the earth, but the space is infinite, and my probability of threatening the earth is endless. Maybe it was no threat that humans chose me. Of course, because my body is smaller than Didimos, I may move.

To hit my original track and shorten 1%. In this way, I can only turn around Di Dimos on the new track. I used to be 11 hours and 55 minutes around each week, and it may be shortened for 10 minutes later. So, you have to go around more in the future, dizzy.

It is said that human beings will use ground telescope to observe the effectiveness of the bright and dark cycle verification of Di Dimos. If I pass, it will be dark. This is why humans choose to collide with twin stars. NASA scientist Statler said that I am a "perfect natural laboratory."

The diameter is greater than 140 meters, and the orbit is less than 7.5 million kilometers from the earth. Such asteroids are regarded as potential threats. NASA believes that there will be no asteroids that have a substantial threat in the next 100 years. In the future, if a small asteroid hit the earth, humans use the trick of hitting me, and I do not know if it can be dealt with.

Source: Metropolitan Express (Reporter Zhong Songjun) Comprehensive report

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