Reborn Technology Scholar

The news about Tianzhou-1 is very hot, and mainstream media have reported on it, attracting the attention of the whole people. Even overseas, many people are paying attention to the news about Tianzhou-1.

Although overseas media always report about China, people overseas view China no differently than they did decades ago, so that China represents poverty and backwardness in the minds of many people. But there are still sober people, especially those who have been here

People in China are well aware of the rapid changes in China.

Therefore, these people are also paying attention to the news of Tianzhou-1. Once Tianzhou-1 is a complete success, it means that China will become the United States and the third country after Russia to master the ability to transport cargo between heaven and earth, and we must know that Tianzhou

Cargo No. 1 is based on the technological research and development of the Shenzhou spacecraft and Tiangong 1. It only transports cargo but not people. The cargo carrying capacity will be 2.6 times that of the Russian Progress M unmanned cargo spacecraft. It is in the international ranking in terms of functions and performance.

Advanced level.

At 19:41:35.361 on April 20, the Long March 7 Yao-2 carrier rocket carrying the Tianzhou-1 cargo spacecraft was launched from Station 201 of the Wenchang Space Launch Site in China. About 603 seconds later, the spacecraft and the rocket successfully separated.

Entering the predetermined orbit, the launch was a complete success.

The whole country was shocked and the world was shocked!

The entire launch process was broadcast live, and Tianzhou-1 entered the predetermined orbit, and clear photos were sent back to the earth one after another.

"Awesome! Well done!" Qin Yuanqing was also watching the live broadcast. Seeing the complete success of the Tianzhou-1 launch, he jumped with excitement.

The successful launch means that Tianzhou-1 has entered the second critical step, which is to complete the automatic rendezvous and docking with Tiangong-2. The completion of this step means that the Tianzhou-1 cargo spacecraft can officially transport cargo from the earth.

To the space station.

"Dad~~ I want to be an astronaut in the future and I want to build a spaceship~~" the baby girl pointed at the TV and said excitedly. She was only 4 years old and spoke in a baby-like voice, which was very fun.

"I want it too~~I want it too~~I want to go into space and become a space hero!" Xiong's son also jumped up excitedly.

Qin Yuanqing was very happy when he saw the excitement of the two little guys. He felt that his family education was very successful. The children would not think about being stars or young talents, but would like to be astronauts.

Nowadays, in the entertainment industry, young meat is rampant. Top-level traffic allows people to see the ability of young meat to attract money. Acting skills are not important, and singing skills are not important. As long as they are good-looking, good-looking, and can operate, it will be fine. If you don’t have acting skills, you only need

Counting one, two, and three, you can completely rely on dubbing in the later stage. You don’t even need to do it in person, just cut out the pictures.

"Okay, when you grow up, build spaceships and become astronauts." Qin Yuanqing smiled happily, picked up a child in one hand, and kissed him on each side.

Playing with the child, at around eight o'clock, Qin Yuanqing told the child a story before going to bed. After putting the child to sleep, Qin Yuanqing came to the balcony, looked up at the stars, and fell into deep thought.

The starry sky is dotted with stars. A star is a star. The vast universe is full of incomparable mysteries. Human beings are full of expectations for the universe. From ancient times to the present, we have never heard of imagining the starry sky. This is true whether it is the East or the West.

all the same.

However, despite the fact that human society has experienced three industrial revolutions and its productivity has increased significantly, in fact, human beings' understanding of the universe is very small. It is praiseworthy to say that it is superficial. In fact, its understanding of the universe is not even superficial.

.

The United States is the only country that has landed on the moon. It has been nearly half a century since the last moon landing in December 1972. In the past half century, NASA of the United States has never carried out lunar landing activities, although it has used detectors

To explore Mars, we also launched the Voyager 2 probe, which flew extremely far away.

But in fact, compared to the universe, such detectors are still insignificant. To put it bluntly, even though humans have already had detectors flying out of the solar system, the earth actually knows a lot about the moon, which is the closest to the earth.

Few people know much about them, let alone planets that are farther away.

Every once in a while, NASA always announces the discovery of an Earth-like planet, which will be the future home of mankind. What kind of interstellar colonization will then be triggered? There are constantly science fiction novelists full of imagination. Humans create advanced interstellar battleships and start interstellar colonization.

In the colonial era, go mining on the planet and colonize alien planets.

But in fact, current human technology is still far from this step.

In 1964, Soviet astronomer Nikolai Kardashov proposed dividing civilizations into three orders of magnitude in terms of energy levels: Type I, Type II and Type III. Type I civilization uses all the energy available on its home planet

, Type II civilization uses all the energy of the star its planet orbits, and Type III civilization uses all the energy of the galaxy in which it is located.

From this perspective, human civilization is now close to but has not yet reached Type I civilization.

These three levels of civilization are also called parent star civilization, planetary system civilization, and star system civilization.

Judging from the latest research, a home star civilization refers to a civilization at this level that has the planet as its core and can dominate the total energy of the entire planet. No species can challenge the position of planetary hegemony. From the age of eating blood to the age of nuclear energy,

All belong to the development stage of this level of civilization. The methods of destruction of this civilization are also the most diverse, ranging from infectious diseases, to wars, resource shortages, natural disasters, nuclear wars, even asteroid or comet collisions, artificial intelligence rebellion, drastic changes in solar activity, etc.

, all have the ability to return civilization to zero. Currently, humans on the earth have at least passed several levels, at least to the stage of nuclear war and artificial intelligence.

Planetary system civilization refers to the collection of all celestial bodies orbiting a certain star, including planets, satellites, asteroids, meteoroids, comets and cosmic dust. The solar system is a planetary system, and this civilization has the ability to exploit the resources of the entire galaxy.

If any planet among the galaxies is developed and settled, the civilization in the entire galaxy will still be reset to zero if silicon-based life forms rebel, or the sun ages and dies, or a nearby supernova explodes.

Stellar system civilization can shuttle back and forth between all stars, the resources of the entire galaxy can be accessed at will, individuals can walk on the sun, and machine workers can hollow out the interior of an entire planet into a factory. It has already begun preliminary interstellar research.

The strength of the war, but the failure of the war, or the explosion of ultra-high-energy stars, the Big Bang, and the dissipation of consciousness, an explosion, or a whimper, will eventually lead to destruction.

So no matter which way you look at it, human civilization on Earth is almost equivalent to a 0.5 parent star civilization, and there is still a long way to go before we can reach a truly complete parent star civilization.

At least now, if humans face a nuclear war, human civilization will basically end. If there is a collision with an asteroid or comet, humans will just lie flat, do whatever they have to do, and then wait for everything to return to zero.

Qin Yuanqing's consciousness was immersed in the system, looking at the space shuttle in the system mall. The space shuttle is a reusable spacecraft that travels between space, the universe and the ground. It combines the properties of an airplane and a spacecraft. It can both

It can take off vertically like a rocket, run on orbit like a spaceship, and land horizontally like an airplane.

At present, there are only a few types of space shuttles on the earth, namely the American space shuttle Columbia, the space shuttle Challenger, the space shuttle Discovery, the space shuttle Atlantis and the Soviet space shuttle

The space shuttle Buran.

There is no doubt that these space shuttles carry about 7 astronauts, including 3 crew members and 4 scientific and technical experts. If they are squeezed together, they can carry 8 astronauts.

Theoretically speaking, the space shuttle is undoubtedly more advanced than the spacecraft. The spacecraft is a one-time return manned spacecraft. It has a small volume and is limited by the number of consumable materials it carries. It does not have the ability to resupply

capability and cannot be reused. The space shuttle is a winged, reusable spacecraft. It can not only send spacecraft such as artificial satellites into space on behalf of the launch vehicle, but also operate in orbit like a manned spacecraft.

Able to glide and land in the atmosphere like an airplane, the space shuttle provides a high-quality tool for humans to freely enter and exit space, greatly reducing the cost of space activities.

Of course, the spacecraft is not without its advantages. The biggest advantage is that it is cheap. After all, the space shuttle is too expensive. One launch costs about 450 million U.S. dollars, which is still the U.S. dollar in the past. This reason is mainly due to the immature technology that leads to maintenance and overhaul.

Extremely complex and expensive. Because the technology is immature and the system is too complex, the risks are high, as both the Challenger and Columbia accidents have proven.

Although spacecraft cannot be reused, single-launch recovery is much cheaper, and the technology is much smaller than that of the space shuttle.

That’s why China decided to independently carry out its aerospace engineering. After weighing the pros and cons, it finally chose spaceships when it came to choosing between space shuttles and spacecrafts. It is precisely because of this that China’s progress in spacecrafts can be said to be rapid. In just a few days

Within a year, it had carried out manned spaceflight, achieving a huge breakthrough. Now, China has carried out several manned spaceflights and initially established a space station.

It can be said that if China had chosen the space shuttle at the beginning, then perhaps by now the space shuttle would have been far from complete, let alone sending people into space and building a space station.

Therefore, China’s original choice was not wrong and was the right path. But now, it actually has to think about developing space shuttles. After all, compared with space shuttles, the limitations of spaceships are obvious, and once mature technology is

, the cost of using a space shuttle is indeed lower than that of a spacecraft.