They should be coming from the space station, and we can go to the satellite launch center to meet them.

In the satellite launch center, in the Gobi Desert, several aviation team members came down from the satellite space transfer center, and they were greeted by the highest director of the Earth Defense Agency, Liu Borong was a little flattered, and hurriedly shook hands, "Director, I didn't complete the task you assigned!" ”

He Kongqun pretended to be angry, "It seems that I will punish you, saying that it is the best that you can come back safely." There will be more difficult tasks for you to accomplish in the future. ”

When Liu Borong returned home, his wife's worried heart for a day finally calmed down, looking at the regular clothes he wore when he came back, and looking at the smile on his face.

It's been you running the house all along, and I haven't had time to take care of it in the sky, it's really hard for you, and I can accompany you to go out for a walk while I'm on vacation these days.

It's just that! Now that your children are going to school, and you haven't had time to spend with them, I think this is also a debt to your children!

Liu Borong knows that his wife has always had a straightforward personality.

All right! It just so happens that I have time to rest at home these days, and if there is training again, I am afraid that I will not have time to accompany you.

Liu Borong's wife is an intellectual woman, who works as a teacher, and advocates teaching students according to their aptitude in the field of education.

Liu Borong has been living in the training room of the space station for a long time, and on the outskirts of this city, which is also known as the place where the aliens of the Stygian Sea vegetation live, this place can buy and sell guns at will is also a three-no area, this is an isolated island, and these aliens have been isolated in this barren land.

And these aliens are still growing in such an environment, and they can change into whatever they want to be, because they have this genetic recombination function.

So imprisoned, this air trip is to take the technology of the spaceship to the next level, the development of particle cannons is the secret technology of aliens, their genes and technology are the most powerful in alien civilizations, although not as good as the technology of the galaxy center galaxy, but it can be said to be a certain ability in the technology of aerospace and life civilization. They are the most powerful technology is the alien armor, they guard the twelve star clans of the aliens, and they live in the supernova, because their armor has a personal enclosed equipment that can distort the black hole or can resist the gravitational effect of the black hole, and ensure the life activity and work ability of the wearer. It can protect against the hazards of environmental factors such as vacuum, high and low temperatures, solar radiation, micrometeors, cosmic gravity and meteorite impacts to the human body. In a vacuum, the nitrogen contained in the human blood turns into a gas, causing the volume to expand. If a person is not armed with pressurized and airtight armor, his life will be in danger due to the huge pressure difference between the inside and outside of the body. The armor dress is a multifunctional weapon set developed from the use of summoners and the most powerful coincident superalloy technology in aliens.

The Genesis drive of the Stygian vegetation could only be used by experimenters in the cockpit of the ship, and later developed an aviation suit for use outside the cabin. The modern new extravehicular spacesuit has a liquid-cooled cooling structure, which can be used for astronauts to go out of the capsule or go to the moon for investigation, or for leaving the station.

Liu Borong has always wanted to know the statement about the Milky Way Star from the vegetation of the Stygian Sea, the central protrusion of the galactic galaxy is a very bright spherical shape, about 20,000 light-years in diameter and 10,000 light-years thick, this region is composed of high-density stars, mainly red stars that are about 10 billion years old, and there is a lot of evidence that there is a huge black hole in the central region, and the activity of the galactic nucleus is very intense. The center of the Milky Way, that is, the intersection of the Milky Way's axis of rotation and the galactic plane. The silver heart is in the direction of Sagittarius, and the coordinates of the 1950 epoch are: right ascension 174229, declination -28°5918. The Sun is about 10 thousand parsecs away from the center of the galaxy and about 8 parsecs north of the galactic surface. There is a large amount of interstellar dust between the galactic center and the solar system, so it is difficult to see the galactic core in the visible light band with an optical telescope in the northern hemisphere. With the advent of radio astronomy and infrared observation technology, people can detect the information of the galactic core through interstellar dust in the wavelength range of 2 microns to 73 centimeters. Observations of the 21 cm spectral line of neutral hydrogen revealed that there was a hydrogen flow expansion arm at a distance of 4,000 parsecs from the center of the galaxy, the so-called "3,000 parsec arm" (the distance was initially mistaken as 3,000 parsecs, but later revised to 4,000 parsecs, but the old name is still used). On the other side of the core, there is a neutral hydrogen expansion arm of roughly the same mass, which is moving away from the center at a speed of 135 kilometers per second. They are supposed to have been ejected from the galactic core in an asymmetrical manner between 10 million and 15 million years ago. In the celestial area 300 parsecs away from the galactic center, there is a hydrogen disc that rotates rapidly around the galactic core, expanding outward at a speed of 70~140 kilometers per second. There is a cloud of hydrogen molecules with an average diameter of 30 parsecs in the disk. At a distance of 70 parsecs from the galactic center, the ionized hydrogen region with intense disturbance also expands outward at high speed. It is known that not only is a large amount of gas gushing out of the galactic core, but there is also a strong radio source at the galactic core, Sagittarius A, which emits intense synchrotron acceleration radiation. Very long baseline interferometer measurements show that the central region of the galactic radio source is very small, even less than 10 astronomical units, that is, no larger than Jupiter's orbit around the Sun.12.8 micron infrared observations show that the mass of the silver nucleus with a diameter of 1 parsec is equivalent to millions of solar masses, of which about 1 million solar masses are in the form of stars. There is a massive dense nucleus in the core region of the fishy galaxy, which may be a black hole. The relativistic electrons flowing into the dense core accretion disk are accelerated in a strong magnetic field, resulting in synchrotron acceleration radiation. The motion of the galactic gas, the strong radio source of the galactic core, and the existence of special galaxies with strong core activity (such as the Seyfert galaxy) lead us to believe that in the evolutionary history of galaxies, including the Milky Way, there was a core disturbance activity, which has not stopped to this day.

It is impossible for the current technological civilization to come and go here, and the black hole is a celestial body with infinite density and infinitely small volume in the universe. The gravitational pull of a black hole is so great that the escape velocity within the event horizon is greater than the speed of light.

A black hole is a singularity with infinite density, infinite curvature and infinitely small volume in the center and a part of the surrounding empty celestial region, which is not visible within the scope of this celestial region. According to Albert Einstein's theory of relativity, when a dying star collapses, it will gather into a point, which will become a black hole, swallowing all the light and any matter in the adjacent cosmic regions into his devouring, which is impossible for the civilization and capabilities of the Earth today.

The creation of a black hole is similar to that of a neutron star: when a star is preparing to perish, its core rapidly shrinks, collapses, and explodes under the force of its own gravity. When all the matter in the core turns into neutrons, the contraction process immediately stops, and it is compressed into a dense star, which also compresses the space and time inside. But in the case of black holes, because the mass of the star's core is so large that the contraction process goes on endlessly, the neutrons themselves are crushed into powder by the attraction of the squeezing gravity itself, leaving behind a matter of unimaginably high density. The gravitational pull due to the high quality is such that any object that comes close to it will be sucked into it.

Civilization can also be understood in this way: stars originally contained only hydrogen, and the hydrogen nuclei inside the star collided with each other and fused all the time. Due to the massive mass of stars, the energy produced by fusion competes with the gravitational pull of the stars to maintain the stability of the star structure. As a result of the fusion of hydrogen nuclei, a new element, helium, is produced, and then the helium atoms are also involved in fusion, changing their structure to form lithium. By analogy, according to the order of the periodic table, beryllium, boron, carbon, nitrogen, etc., will be formed in turn, until iron is formed, and the star will collapse. This is due to the fact that iron is quite stable and does not release energy when participating in fusion, while iron exists inside the star, causing the star to not have enough energy inside the star to compete with the gravitational pull of the massive star, which causes the star to collapse and eventually form a black hole. It is called "black" because of its infinite density, and the resulting gravitational pull makes it impossible for the light around it to escape. Like neutron stars, black holes evolve from stars that are tens or even hundreds of times more massive than the Sun.

In other words, it is equivalent to hundreds of times the sun, and can suck in any object.