Why do we make teeth when other people's "eye of the sky" is abandoned like a garbage dump?

For a long time, the world's largest single-aperture astronomical radio telescope was located in arecibo radio telescope, Puerto Rico, with a diameter of 305 meters (later expanded to 350 meters). 1963 completed the main body construction, 1974 completed the expansion project.

After the expansion of the radio telescope was completed, astronomers sent a series of binary messages to the M 13 cluster 25,000 light years away to express their joy! This string of information contains some basic information of human beings, hoping to be received by intelligent life outside the earth and have a basic understanding of human beings on earth! It is said that I received a reply after more than ten years!

After the completion of the "Eye of the Sky" project in China, it was embarrassed to be the second child. Judging from some current video materials, although arecibo radio telescope has not finally retired, it is like an abandoned garbage dump!

Is the single aperture radio telescope useless? Abandoned, and we long for it!

Yes or no?

Arecibo radio telescope gave it up mainly in three aspects:

1. Aging of lagging equipment

Arecibo radio telescope was completed in 1963 and has been in service for almost 60 years. At that time, the technical level could not meet the current needs, especially some equipment was aging. In August this year 10, arecibo radio telescope was smashed with a hole with a diameter of 30m due to cable problems!

It can be seen that some of its devices are aging to what extent! Coupled with the technology more than 60 years ago, the sensitivity is also lacking! If it is a comprehensive maintenance upgrade, it is better to rebuild one! This is one of the reasons why it faces such an embarrassing situation.

Step 2 limit

Radio telescopes have their natural limitations, that is, they are fixed, so the observation surface is narrow!

Due to the progress of technology, radio telescopes take on more forms.

For example, the Very Large Array (VLA) later built in the United States is a matrix composed of 27 25-meter-diameter radio telescopes. There is a movable orbit under each telescope, which can be moved to different positions as needed.

The square kilometer array radio telescope (SKA) built in Australia is a square kilometer array composed of small radio telescopes with a diameter of about15m, and then a larger array composed of small square kilometers. The final design will reach more than 3,000 kilometers and is expected to be completed in 2030.

3. Technical iteration

The radiation signal from the distant outer space of the universe is very weak, which is shielded by the earth's atmosphere and difficult to be observed!

So people turn their eyes to outer space, and the earth's environment has less interference with it, so they can observe it more clearly! In addition, with the progress of optics, there are more ways to observe the universe!

For example, the famous Hubble Space Telescope, its successor, the High Definition Space Telescope (HDST), and the space radio telescopes tried by various countries at present are also the reasons why arecibo radio telescope is in an awkward position.

In those years, in terms of high and new technology, they rejected our country and blocked our technology in an attempt to regard us as the world factory forever and produce daily necessities for them.

They did this for two reasons:

On the one hand, it is due to historical reasons: they have committed many crimes in our country and they have a guilty conscience. Although we have always loved peace, we can't be a gentleman's belly with the heart of a villain.

On the one hand, we will continue to enjoy the dividend of high technology: as citizens of developed countries, we will take a leisurely pace and enjoy the afternoon sunshine! And we are still in the dark factory, producing necessities for them, and we want to enjoy the coolness of summer like them! In winter, enjoy the afternoon sunshine leisurely! But others won't let me!

Some people choose to abandon their families and compatriots, even if they are kneeling, they must be integrated into them; Some people, even if their backs are broken, have to shoulder heavy burdens and lead their compatriots to enjoy the same life as them!

Therefore, we should thank the early researchers in China for enduring humiliation and gritting their teeth, which laid a solid foundation for us!

Indeed, China's FAST has its limitations, but it is also top-notch among similar products.

1994 proposed, completed on 20 16! Academician Nan, a respected scientific researcher, gave up a comfortable life and a well-paid job abroad! Trekking between wasteland, just to find a perfect location!

For the sake of China's "quickness", he devoted his whole life to the motherland, including his life and health. One year after the "Eye of the Sky" was built, he left us forever!

Guizhou's "eye of the sky" has three characteristics:

If you have different opinions, you can discuss them together in the comments section! !