The Return of the Black Technology of Immortal World

Therefore, the spacecraft consumes time mainly in acceleration and deceleration.

Although for an aircraft using an anti-gravity propulsion device, the first cosmic speed of 7.9km/s is of little significance. After all, as long as there is acceleration, it can escape from the blue star.

But if you want to land on the moon, the speed of the spacecraft must be as fast as possible, because the earth-moon system is also moving in real time. If the speed is slow, it will not be able to catch up with the moon.

Zhao Yuxi obviously didn't understand this. She looked at the almost unchanged scenery on the monitor for a while, and finally got tired of it. She and Yang Qing had long gone without knowing where they were.

The biggest attraction here is probably that when the spacecraft passed through a large cloud, the entire field of vision suddenly became pale, but it passed quickly.

A cloud has a mass of at least several hundred to several thousand tons, but its density is too small, making it occupy a large volume that can accommodate several spacecraft like it.

Fortunately, inside the spacecraft, the signal is fully available, so she can do whatever she wants. She can watch TV shows as much as she wants, watch short videos as she wants, and occasionally play a few games in exciting battlefields.

Since she started practicing, both her nervous reaction ability and hand speed have increased a lot. She has gone from a novice in the game to a top expert in an instant.

However, as the height of the spacecraft increased, the scenery outside gradually changed. From the original blue of the sky, it gradually darkened and turned into dark cyan. This is the color at an altitude of 10,000 meters. It can be seen on ordinary civil aviation aircraft. See.

This is because as the altitude of the spacecraft increases, the atmosphere becomes thinner and thinner, and the scattered blue light becomes less and less, while other light rays increase.

At a higher altitude, above 14,000 meters, due to the reflection of purple, the color of the sky seen from there is dark purple.

In the equatorial region, more than 21 kilometers above the ground, the sky will turn black and purple.

Further up, atmospheric scattering disappears completely, and we see the background color of the universe, pure black.

Because on the flying spaceship, not to mention her, not even Yang Qing had much work to do, so Zhao Yuxi took a rare break from the busy work, and she was still a little uncomfortable for a while.

But as the day passed, she finally understood the true meaning of leisure. She occasionally looked at the outside world and saw the sky changing a little bit. Then she checked her phone and asked Bai Yi to make herself a cup of milk tea and some snacks. In a short time, she became Get comfortable.

At this time, she didn't want to be with Yang Qingni anymore.

In fact, they have always been a strange couple. They have been in contact for a long time, probably because of Yang Qing. The time they spend together is really pitiful, and they have gradually become accustomed to living at a distance from each other.

Now let them act like ordinary couples, dating, watching movies, etc. all day long, but they are a little uncomfortable with each other.

At seven o'clock in the evening, he appeared in the main control room again.

"Yuxi, the spacecraft is now crossing the Karman Line."

"Have we reached the Karman line? That means we have entered space."

After reading aerospace knowledge for so long, Zhao Yuxi understood the Kármán line.

This is about a hundred kilometers above the ground, basically at the bottom of the thermosphere, and is considered the dividing line between outer space and the atmosphere.

Above this altitude, traditional aerodynamics basically fails, and aerospace technology comes into play.

Although this standard is not clear and there is no obvious sign, this is a historic scene after all, that is, their spacecraft officially entered space.

Looking back now, the atmosphere has long since turned into a black background, and only the blue stars, relying on the color of the sky reflected by the ocean, still retain their blue characteristics.

Although passing here means that Yang Qing and Zhao Yuxi have officially become one of the hundreds of human beings who have entered space, Zhao Yuxi does not seem to feel any excitement, as if this opportunity, which had been rare in the past, does not matter. Same.

Perhaps entering space this time was too mundane, just like a quick trip, like going out and getting on a plane.

However, it is more relaxing here than flying. There are no restrictions and no need to worry about seat belts or airflow interference.

Zhao Yuxi silently enlarged the background of Blue Star, asked Xiao Ai to take a photo of her as a souvenir, and then silently sent it to Moments.

Just a photo, without any explanation, made the circle of friends excited.

"This picture is very good, just like the real thing!"

"Xixi wants to travel to space? Why don't you book a ticket?"

…

Zhao Yuxi looked at the various associations in it. In order to keep it secret, she did not answer, but she was secretly proud in her heart.

Now there is no color outside anymore, it has completely become the background in the universe, but Yang Qing has become serious, sitting here, staring at the screen, never leaving.

Because at this point, the atmosphere can no longer protect the spacecraft, and various micrometeors and space junk can freely attack any aircraft.

Yang Qing's consciousness was connected with Xiao Ai, and he could feel that in just a few minutes, the spacecraft passed by several pieces of space junk.

Of course, these garbage are extremely small, and only such tiny garbage can persist at such a low altitude for a period of time without being caught by the gravity of the blue star.

Of course, what awaits them is the fate of being pulled in by gravity and burned in the atmosphere.

Although there was not much air left outside, during the contact with the spacecraft, one could clearly feel that the temperature nearby began to rise rapidly.

This is the thermosphere, which is generally between 500k and 2000k. There is also an ionosphere above, and the air molecules in it are already in a plasma state.

However, the air here is extremely thin and the conduction ability is extremely weak. Even if there is no protective cover, it will not heat up the spacecraft much.

Anyway, since humans launched rockets, we have never heard of a rocket crashing due to the temperature of the thermosphere being too high.

This is just like the predicted thermosphere around the solar system. In the near-absolute vacuum, a few hydrogen atoms, no matter how high the energy level is, pose no threat at all.

As the spacecraft continues to rise, reaching more than 500 kilometers, there is another threat, and that is various low-orbit satellites.

From here to an altitude of 2,000 kilometers, there are the orbits of various low-orbit satellites. Spacex's Starlink satellites are the most famous. Spacex uses low-orbit satellites such as Starlink to provide broadband services to the world.

Although the original intention is good, there are too many Starlink satellites, hundreds of them. If it weren't for their existence, Xiao Ai's chosen launch time would have been earlier.