Star chain plan, is the United States a "private" enterprise announced the plan, plans to deploy more than 42,000 satellites covering the Earth's orbit, the height of coverage in about 550 km, and the goal is actually just to let everyone in the world can be connected to their home wifi to access the Internet; and China in April 24, 2022 on Space Day The announcement: we will form a "near-Earth asteroid defense system", the purpose is to contribute China's power to protect the Earth and human security. Once the news came out: India directly reported: you are engaged in Star Wars 2.0, so what is it all about? What exactly is the purpose of the Starlink? And what is our near-Earth asteroid defense system?

Malicious bumper to bumper, but also anti-missile WiFi to sell how much?

What exactly is Musk's Starlink project here for? Of course, according to their published statement to understand it, is to provide people around the world with a good signal, low price WiFi ah, this is a great thing, have not we been cell phones often no signal to get all impatient? Now only 40,000 satellites will be able to solve the WiFi problem, real too worth it. And there are little features attached to it!

Intercepting ICBMs, it was all tested for fun: interestingly, in 2018, the U.S. officials, however, took the Starlink satellite and did a test of a small function attached to it other than Internet access, a small function indeed, which is defense against ICBMs. According to the plan the U.S. company space X will launch more than 42,000 satellites to Earth orbit, so to speak almost densely covering the surface of the Earth, and fishing nets almost, in this case, the U.S. test found that 350 intercontinental missiles launched from around the world, all intercepted by the star chain. Because the number of their satellites is too many, too dense, almost every space in orbit is covered by the dragnet, resulting in the chance of each ICBM being intercepted up to 5~7 times, which means that once this thing succeeds and can really use the little feature that comes with it, then any ICBM will have the possibility of being intercepted by the US 5~7 times before it attacks the US target, basically What a nice little feature!

The Chinese space station is a satellite that moved itself: what is the orbital altitude of the Chinese space station? 390 km! Starlink satellite orbital range is how much? 540 km to 580 km, which is far away, even neighbors can not count it. However, Starlink official said that the closer the satellite is to the Earth, then the better the signal, the faster the network speed, so occasionally some satellites will drop some height to test; at the same time, because there are too many satellites, each satellite is too small, so there may be some satellites will be out of control, and thus do not know where they run, which is possible.

So, between April and May 2021, two U.S. Starlink satellites suddenly changed their orbital altitude and "happened" to be close to the Chinese space station. The Starlink-1095 satellite, between May 16 and June 24, 2021, suddenly dropped from its original orbit of 550 km to an altitude of 382 km, which is the altitude of the Chinese space station, and suddenly became normal again, remaining at that orbit altitude. And on July 1, 2022, the satellite was so close to our space station that there was a danger of collision, and for safety, our space station implemented a reorbit to avoid it.

And similarly, on October 21, 2021, another satellite in the star chain was also uncontrollably de-orbited, threatening the Chinese space station, and we had another emergency de-orbit. And this was all just an unintentional event as the other side said, these satellites were essentially just intended to provide wifi. but, never mind, we're here too.

Chinese near-Earth asteroid defense system.

In the recent program "Science and Technology China - Academicians Speak", which is jointly produced by the Chinese Association for Science and Technology "Science and Technology China" and Jitterbug, Academician Long Lehao, the chief designer of the Long March 3A series of rockets and an academician of the Chinese Academy of Engineering, the chief designer of the Chinese Academy of Launch Vehicle Technology, talked about this issue very clearly. He said that we plan to use the Long March 3B rocket to launch the Tianwen-2 probe to attach to an asteroid in 2025 and take samples, so that we can detect the composition of the asteroid, that is, it has the function of attaching to a space object and retrieving some part of it, which is very useful for us to study asteroids.

And this program is also China's own proposal, is "accompanied by flight + impact + accompanied by flight" "Chinese program", specifically is will launch two satellites at once, the first satellite first around the asteroid rotation, another satellite impact asteroid to change its orbit, accompanied by the satellite continues to fly around it, to test the effect of the impact and the subsequent new orbit, to see whether the purpose.

Second: Around 2026, we will have a great power to take on the role of building a community of human destiny, and we are going to be able to launch satellites from Earth that are capable of directly impacting any asteroid-like object with a speed of upwards of 10 kilometers per second, knowing that this speed is so fast that we will be able to catch up and hit it with precision, while the U.S. mainstay Minuteman 3 intercontinental missile is only 5 kilometers per second. Only half the speed of an asteroid. It is clear how ambitious China's goal is to achieve, after all, in the face of the universe, to protect all mankind, technology must be in place to do so.

Where are the roots of Chinese spaceflight?

Chinese spaceflight, four words is not easy to write, it can be said that in the U.S. blockade, hard little by little to grow up. According to the recollection of academician Long Lehao, on May 25, 1999, the Americans officially banned Sino-US space cooperation on the grounds of avoiding the disclosure of US state secrets. And the reason that triggered this blockade is that China's rocket development is too fast, actually received the task commissioned by the U.S. company to launch their international communications satellite seven A, and then the Americans said that there is technology leaked to China, so it was banned, a great shame ah!

In fact, ah, today's China went to the moon and picked the soil back; went to Mars and began to explore the environment of Saturn; launched the space station, the construction of a single power may be the only space station behind mankind, very powerful indeed, but where is the root cause? In fact, it is the rocket, as long as the rocket technology is enough, the others are auxiliary; as long as the rocket thrust is strong, then you can send huge objects directly into space; as long as the rocket carrying capacity is strong, then we can go to Mars, or even further away, and China's rocket is so strong.

Specific data Long Lehao academician in "Science and Technology China - Academician open lecture" said very clearly.

1、Till today, there have been 423 launches, and 770 spacecraft have been put into scheduled orbits. The launch success rate is probably the first in the world, and the number of launches is the third in the world, and the accuracy of orbiting can be said to be the first-class in the world.

2, our fat five rocket low orbit capacity can reach 25 tons, it should be ranked in the world is basically the first or second level. There is also its load efficiency, that is, the heaviest satellite it can send into a certain orbit divided by the takeoff weight of the rocket, reached 1.61%, ranking second in the world only after the American Delta rocket.

3. We are accelerating: for the first 100 Chinese rocket launches, it took us 37 years, but for our fourth 100, it took us only 2.7 years, and for the first 100 rocket launches, we failed 7 times, but for the fourth 100, we failed only 3 times.

It is also because of the powerful help of rockets that China has the strength and power to carry out more advanced space exploration missions.

Chinese spaceflight, four great words

Commercially we make money around the world: we have launched more than 72 commercial satellites, put more than 90 into their intended orbits and served more than 30 countries.

After 20 years of development, there are nearly 60 satellites in total, all of which are sent to the sky by the three "courier boys", Long March 3 A, B and C, to provide accurate space-time services.

Near-Earth Space Station Establishment: China's space station will be the only human space station in orbit after the International Space Station is about to expire and withdraw from service.

Space to see the beauty of convenience: Chang'e 4 landed on the back of the moon, which is the first time in human history; Jade Rabbit 2 walked on the back of the moon, which is also the first time; unmanned single sample return reached more than 1.7 kg, this is also the first time in the world.

Deep space on Mars adventure: May 15, 2021, Zhu Rong landed on Mars, China became the first time on the realization of Mars, Mars around, fall, seek, the three exploration missions of the country. And the Americans took a full 32 years to complete these three steps, although we borrowed from each other's experience, but undoubtedly shows our strength.

There are many, many more, behind the continuous success of Chinese spaceflight, is the rapid progress of China's rocket strength, is the research of countless scientific workers day and night, is the candlelight of countless Chinese backbone burning their lives out, is the patriotic sentiment of academicians such as Long Lehao because of the failure of the launch overnight white head, Chinese spaceflight, will eventually go to the stars! #Academicians explain the latest planning of Chinese spaceflight