"Damn, won't we, we haven't even found a pulsar in Huaguo?"

"I'd love to find one in China. ”

"That's not right, there are so many stars in the sky, they can find them, why can't we find them?"

"Brother, you think pulsars are those stars that you see when you look up at night. Let me tell you, the stars we see at night are all huge stars, and each of them is bigger than the sun, and some are tens of billions of times larger. ”

"Uh......"

In the face of astronomy, countless netizens instantly became white.

This made many netizens a little embarrassed.

"A true pulsar must receive its pulse signal through the radio telescope before we can detect it. In other words, we can't see with the naked eye, or even with ordinary optical glasses. ”

"I see. However, we don't need to feel that way. Isn't it just the discovery of a pulsar, and we will definitely be able to discover it in China in the future. ”

"You thought you've only found one?"

"Not just one but several. Could it be that there are so many pulsars like this in the universe?"

"Of course, there are too many to count, but it's hard for us to find out. ”

"Tell me, then, how many pulsars have we discovered as humans?"

"So far, we humans have discovered more than 2,000 pulsars. And more than half of them were discovered by scientists in the United States. ”

"I said, more than 2,000?"

"Not really. ”

"No, no, you're saying that among the more than 2,000 pulsars discovered by our human beings, we haven't found any of them in Huaguo?"

"Yes. ”

Seeing this, some netizens who disagreed before were deeply hit.

You know, at the beginning, they thought that there were only a few pulsars, and they were discovered by the United States.

The strength of others is strong, and we can just keep up.

However, now that I look at Nima, more than 2,000 pulsars have been discovered.

But among the more than 2,000 pulsars, we have not found any in Huaguo.

It's not like you can catch up with a little effort.

Looking at this situation, he meowed, in the field of astronomy, I am afraid that the entire country of China will be difficult to look at in the back of the country for 30 years.

"Is this pulsar really hard to spot?"

"Of course it's hard. You know, although there are countless pulsars in the entire universe, their signals are too short. And, because we can't see with the naked eye, we can't see with ordinary optical glasses. Just like Hubble, who is more awesome in the United States, he can't find it. The real spotting of pulsars is the kind of radio glasses. These glasses do not have optical lenses, and the principle of discovery is not to see, but to receive pulsed signals by antennas. ”

"I see. By the way, what is this radio telescope glass like?"

"Well, let's show you the Arecibo glasses in the United States, most of the pulsars in the United States were discovered by it. ”

An astronomy enthusiast posted a picture of the "Arecibo" telescope glasses in the United States.

When many netizens saw it, they couldn't stop screaming.

"My grass, why are these glasses so big?"

"yes, it's too big, it seems like the caliber should be 50 meters. ”

"Damn, I'm interested in astronomy now. ”

There are countless disciplines in the world.

Astronomy has always been an incomparably large and mysterious subject.

If you don't know about it before, forget it.

But when you try to understand it, you become fascinated by it.

Not to mention the brilliant starry sky, just this 50-meter diameter super large glasses are extremely attractive.

"It feels like there's something like alien technology. ”

"yes, I always thought that the glasses were a long tube with optical glasses on them. ”

"No matter how big it is, the Hubble telescope is big, but it's only 13 meters, which is far from being comparable to Arecibo. ”

Everyone was deeply attracted by the "Arecibo" glasses in the United States.

"Can anyone explain what Arecibo does?"

"Yes, what is the difference between this radio telescope and the optical telescope, and what is its purpose?"

"Also, can anyone explain that pulsar to me in detail?"

The attracted crowd of enthusiasts asked countless questions.

OK.

Although Hua Guo is not very good at astronomy, he still knows some astronomical knowledge.

is still the astronomical researcher, replying to all netizens one by one.

"Let's start with pulsars. Pulsars are a type of neutron star, and their mass is incomparably large, but on the contrary, their size is very small, and some are as big as soldier balls. However, despite the size of the ball he looks like, his mass of 10 Earths may not be able to reach it. Of course, it has not yet reached the density of a black hole. Scientists call such stars, which are slightly less dense than black holes, neutron stars. Not all neutron stars are pulsars, though. Neutrons that emit impulse signals are called pulsars. ”

"Let's explain the role of pulsars again. Because pulsars will find pulsed signals that are like lighthouses, with regular periods. Therefore, he has a huge role for astronomers to study the universe, as well as the evolution of stars, and to locate the coordinates and time of the universe. For this reason, the astronomical community regards the scientists who discovered pulsars as star hunters. ”

This astronomical researcher is not an expert, but he can still do it with simple astronomical pedigrees.

"It is precisely because of the role of pulsars that people have been constantly looking for pulsars. Because pulsars are not visible to our naked eyes, we can only look for pulsars by receiving signals. So, scientists made radio glasses for this purpose. ”

"But radio glasses aren't just about looking for pulsars. He is interested in finding other celestial bodies in the universe, such as dark matter hidden in the universe, black holes, exploring the edge of the universe, and searching for aliens...... It also has a huge effect. ”

"Of course, radio glasses aren't just for astronomy. In weather forecasting, high-precision navigation, positioning, surveying, including aerospace engineering, rocket launches...... All have a pivotal position. ”

Although the astronomical researcher did not introduce it in great detail.

However, even this content is enough for countless netizens to digest.

"I thought that the astronomy of the United States was very powerful, but now I look at it, Nima, this astronomy can be directly used in aerospace. ”

"The principle of aerospace and missiles is the same, and I now know why the missiles of the United States are so powerful. ”

"With such a strong radio type telescope, can it not be strong?"

"It's not just about aerospace, look at people's GPS positioning systems. It is precisely because of the technical support of Arecibo glasses that they can achieve global positioning of GPS. Well, the positioning function of the big white mobile phone also uses GPS global positioning technology. ”

"Actually, having said so much, the above is about astronomy, about telescopes, about pulsars. But in fact, it's about science and technology, and it's about the strength of the entire United States. ”

One word.

Countless Chinese people opened their mouths and fell silent.