The name neutron star sounds unremarkable, like a quiet concept in a physics textbook. But once you really understand it, you will find that this product is simply a collection of "Iron Man + Hercules + Charizard" in the universe. It's not a joke to say it's scary, it's not a popular science game with you in the universe, it can really "evaporate you in place".

Speaking of neutron stars, we have to start with its "past life". It was preceded by huge stars, which were not as gentle as our sun, they were very violent. When they run out of fuel, gravity begins to roll inward, and the shell explodes with a bang, becoming the protagonist we are going to talk about today - neutron stars. It's not like a black hole that sucks everything into its stomach, it's a hard-rigid-top type player who survives self-collapse and becomes a "steel plate compression biscuit".

How small is it? Don't look at it scary, it's really not big. On average, the diameter is 20 to 0 kilometers, for example, Beijing is farther than it when it goes around. With such a nod, his weight is comparable to that of a cosmic giant. Not to mention a city, even if you squash the entire Mount Everest and throw it in, it will not be enough to stuff your teeth.

中子星的密度，簡直逆天。如果你隨手挖一立方釐米，注意，是釐米，不是米，那裡面的重量就能達到10億噸。換句話說，你往兜里揣一顆中子星“糖豆”，那不是裝飾品，是炸地球的鐵球。再誇張點說，要是把整個地球壓成像中子星那麼密，那咱們地球就不再是藍色星球，而是22米高的小鐵球。

而中子星的溫度，简直像它每天早上都喝超新星特调版“辣椒水”。它的表面溫度能高達1000萬攝氏度。你看太陽熱得讓人不敢直視，它不過才幾千度。中子星在那邊轉個圈，感覺能把冰箱都化成蒸汽爐。要是把太陽和它調個位置，地球連揮手說再見的機會都沒有，直接被“高溫撤離”。

Its speed is also not ordinary. Some neutron stars rotate as fast as chicken blood, and they can rotate hundreds of times in 1 seconds, which is comparable to the cosmic-level "gyroscope champion". At this speed, its surface is almost like a high-speed drum washing machine in the universe, whoever gets close will break.

說到壓力，那是它的“拿手好戲”。地球中心的壓力已經讓我們覺得夠硬核了，超過300萬個大氣壓。可在中子星面前，那就是小兒科。人家能頂到10的28次方個大氣壓。這啥概念？哪怕你是金剛狼，也會被壓成一個中子粒。沒得商量，物理規則就這樣冷酷無情。

磁場更離譜。你以為地球的0.7高斯已經能讓指南針老老實實了？中子星直接甩出10000億高斯的氣場。在它周圍1000公里以內的天體，如果沒有堅不可摧的盾，基本就等著被撕得粉碎。這不是電影特效，這是宇宙給的“拆遷大禮包”。

And then there's the energy radiation of it. This thing, a second emits a million times more energy than the sun. Imagine that your light bulb suddenly turns into a million suns and starts at the same time, and you dare to live in that house? Scientists estimate that if we turned every second of neutron star's energy into electricity, mankind could use it for centuries from the time of Qin Shi Huang to the present.

Having said that, black holes or neutron stars, who is more fierce? This question is like asking who is more capable of fighting, the Northeast Han or the Southern Kuaishou. What is a black hole? It is the "gold-swallowing beast" in the universe, what you give you to eat, not picky eaters, and not even letting go of light. The neutron star is a cosmic-level power station, the kind that generates energy and does not die, one releases, and the other absorbs, and the style is completely different.

Black holes are so long-lived that even when the Milky Way retires, it will still be able to eat it. And the neutron star is like a small sun that burns with all its might, glowing and spitting fire, but the consumption is also frighteningly fast. Therefore, if a black hole and a neutron star "meet" head-on, the scene may be more exciting than a Hollywood blockbuster. If the neutron star does not pour out all its energy at the first time, the black hole will open its "big mouth" and suck it gently, and everything will return to zero.

However, the neutron star is not a fuel-efficient lamp, and on some occasions it can burst out at the last moment of the so-called "gamma-ray burst", directly forcing the black hole back by three points. This kind of explosion is not a simple light, but a level that can really make nearby stars extinct, and even have a great impact on the cosmic environment.

In recent years, as astronomical technology has become more and more powerful, mankind has successively captured a lot of signals about neutron stars. For example, in 2020, LIGO and the Virgo Observatory jointly detected a strange celestial merger event, including the phenomenon of a neutron star "merging" with a black hole. This "marriage of the century" made scientists so excited that they seemed to have won the cosmic lottery, and finally confirmed some theoretical speculations in field observations.

Therefore, whether it is a black hole or a neutron star, they are not used to compare who is stronger and who is weak, they are representatives of the celestial world. Humans are in front of them, not spectators, but students. After all, who doesn't want to know more about their "old neighbors" in the universe?