Before Jiang Yicheng opened her live channel, there were many fans waiting online.

The landing of interstellar explorers on planets is also known as "going to earth", and the live broadcast of "going down to earth" is often the most viewered. For most people who can't afford to spend exoplanet travel projects and don't dare to go to unexplored planets that are inaccessible, Jiang Yicheng can experience the "excitement" of landing on other habitable planets for them.

The screen signal switches to the ship's external camera, and the "Blue Amber", which occupies almost all of the field of view, is like a chaotic crystal ball. The blue-purple ocean is interspersed with dark blue and rosy continents, and the surface is covered with white clouds. Because the planet orbits a star with a hotter surface than the Sun, the peaks in its emission spectrum are more skewed towards the blue-violet end according to Wiane's law of displacement (1). This also means that in the world of "Blue Amber", everything is more blue-purple.

In addition to the influence of the emission spectrum of the star itself, the photoautotrophic organisms on the "blue amber" also reflect blue-violet light. Similar to the fact that most plants on Earth reflect the most green light of total energy to avoid burns, because the energy peak of the light passing through the "blue amber" atmosphere is more blue-violet, and the planet's native light autotrophs absorb red light and reflect blue light, so that the land at low latitudes presents a predominantly blue color.

Although the resolution of Jiang Yicheng's spacecraft's external camera is not as good as that of documentaries on official channels such as Exploring Nature, the viewers of the channel are very excited to see "Blue Amber" in the live broadcast.

Barrage: Blue Amber is super beautiful!

Barrage: Ahhh......h

Barrage: Save money and other blue amber tourism development [squint]

Off-screen, Jiang Yicheng introduced to viewers who were watching her channel through a communication wormhole 27 light-years away: "The habitable planet Lanpo is very similar to my home Earth. Its mass is about 80% of that of the Earth, and its surface gravity is 0.89G(2), which is slightly lower than our standard 1G gravity. ”

"The temperature of the star around the blue amber is a little higher than our sun, so the whole world on the blue amber should be blue-purple. Personally, I think it's very beautiful, and it's a newly discovered habitable planet that hasn't started to develop production industry and tourism, and it's hard to get a landing permit – but I did! Praise me, dear ones? ”

Barrage: Sister One Orange [Cow] [Beer] (Maintain formation.)

Barrage: Sister One Orange [Cow] [Beer]

Barrage: Sister One Orange [Cow] [Beer]

Jiang Yicheng also felt that he was very awesome [beep-], and he dared to go to a completely unexplored planet like Lanper.

In addition to her, there are also interstellar explorers who broadcast their own landing on exoplanets, but doing survival challenges on unexplored planets is completely dead. Maybe she'll hang up one day, and hanging on the surface of a barren planet like Blue Amber may have to wait more than ten years or even decades before someone from a travel company can find her.

But in the face of her "food and clothing parents", Jiang Yicheng still has to maintain an optimistic attitude: "Then I'm going to prepare to set off now...... Since my current spacecraft is not aerodynamic and not suitable for flying in the atmosphere, I still take the shuttle to land on the surface of the Blue Pearl. ”

Jiang Yicheng picked up her camera drone from the ground in the cockpit, switched the screen signal to the drone camera, and confirmed that the signal transmission was normal from the drone's display screen.

Her survival challenges are all filmed with drones, and all signals received by the drones are transmitted back in real time to the unmanned spacecraft in synchronous orbit. When the time for the survival challenge is over, or when Jiang Yicheng's life is in danger, the spaceship AI will send a shuttle to pick her up, or intervene in some other way - although it seems that there is no other way than sending a shuttle and launching a defensive missile.

The drone's camera has a much higher definition than the camera inside the spacecraft, and the sound with a professional microphone is also better. The fans in Jiang Yicheng's channel began to brush up the inconsequential barrage again.

Barrage: My sister's eyeshadow color is beautiful! Ask for a color number!

Barrage: 3D HD stereo [Top]

Barrage [Green]: The makeup box was said to be dedicated to interstellar voyages, and the texture is not good [eat melon]

Jiang Yicheng put on a helmet, sealed the edge of the helmet with vacuum glue and the collar of the protective suit, and then walked out of the cockpit with the drone.

The spaceship has been in standby mode with automatic course correction, and Jiang Yicheng passed through the living module to the warehouse. There is a transitional decompression chamber between the warehouse and the living chamber, and after she enters the decompression chamber, the door of the decompression chamber and the living chamber is closed, and the air in the decompression chamber is pumped out before the door of the real warehouse can be opened.

In the center of the warehouse is a pneumatic shuttle with an elastic strap, with a workbench on one side and a few black missiles stacked on the other—Star Explorer ships are allowed to carry conventional weapons, and the nature of their work means that they are often outside the horizon of the solar system (3), which is a real "place outside the law".

Jiang Yicheng opened the hatch of the shuttle and sat in the driver's seat. She hung the drone on the right side of the cockpit of the shuttle while it was filming but not yet turned on the hoverengine, and then joked to her audience on the other side of the screen: "Now that I'm sitting in the shuttle, the camera might shake a little bit during landing." Everyone pay attention to hold steady and do not fall. ”

Barrage: It's a bit like an airplane cockpit!

Barrage: Sister One Orange come on [Bixin]

Barrage: What is an airplane?

Barrage [Blue]: The □□□ in front, right? Airplanes are specific to the Earth (4).

Barrage: May the Lord bless an orange [rose] [rose]

Barrage: Pay attention to the quality of the blue word!

Barrage: The shuttle is good-looking [than the heart]

Barrage [Blue]: Hey, I'm just telling the truth [covering face]

Barrage [Blue]: Wait, the platform has harmonized "Fire/Star/People???

Barrage: Hahahahaha

Barrage [Yellow]: Hahahahahahahahaha

Barrage: Popularize barrage etiquette, do you want to call "Martian citizens" understand?

Barrage: Hahahahahaha

Barrage: Fire/star/people are not allowed to say, where is the etiquette pacesetter?

Barrage: What is it called if you were born on Mars and then immigrated to the moon?

Barrage: Platform Harmony Rules Mystery [Funny]

Barrage: Earlier, immigrants to the moon should be called "Martian lunar citizens" [dog]

Barrage: What kind of Martian lunar citizen, are you tired of talking so much?

Barrage [Red]: The three words "fire/star/man" have become seven words, can you still speak?

Barrage: That's a friendly army......

Jiang Yicheng saw that the barrage seemed to be about to start involving something not good, and immediately said: "I see that everyone is discussing how to call friends born on Mars, I think this is the case for this issue...... It's not that it's wrong to call that word, otherwise those ancient books and movies won't be able to be broadcast (5), but the platform should take a maximum common divisor that everyone can accept, and it makes sense to ban related words. ”

"The friend just now also said unintentionally, there is no need to go online. However, I hope that everyone will pay attention to it when speaking in the future, friends who watch the live broadcast come from various celestial bodies, and I hope we can all empathize with it. ”

Barrage: Sister One Orange has three views [Bixin]

Barrage: It's all the pot of the platform, thank you for explaining!

Barrage: Ben Mars Citizen Online Support Sister One Orange [Cute]

Barrage: Wait, there should be a time lag on Mars, right?

After the Earth opened from the South Pole to the North Pole, the collision of high-energy particles at the core created a large wormhole (6), which is called the "stargate" of the solar system. One end of the gate is in the center of the Earth, and the other end is launched into the α of the constellation Centauri, so that the wormhole mouth does not get too close and cause distortion.

The communication wormhole carried by an interstellar explorer like Jiang Yicheng is installed near the stargate at the α of Centauri, and sends signals directly through the stargate back to Earth. Therefore, there is no time difference between the audience on the earth watching the live broadcast, and at this time, Mars, which is 0.93AU (7) away from the earth, has a signal propagation time difference of about 7 minutes and 40 seconds from Jiang Yicheng.

Barrage: Crossed ???

Barrage: Martian citizens per capita [funny]

Barrage: The front is enough, my sister said that I don't want to discriminate against regions......

Barrage: I'm a citizen of Mars, but can't I be on Earth now?

Jiang Yicheng felt that if he talked about a little sensitive topic, the content of the barrage would not be able to be pulled back. She probably shouldn't have gone down to maintain order, but she didn't have to worry about this situation at all, just pretend she didn't see it. She pressed the "Unlock" button on the bridge of the shuttle and pulled the engine's energy supply to 20% on the control panel.

The door of the spaceship warehouse opened, and Jiang Yicheng drove the shuttle out of the "civilization" and into the "wilderness".

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Exegesis:

(1) Wien's displacement law: the product of the wavelength corresponding to the temperature of an absolute blackbody and the maximum radiation is constant. Wien's law of displacement is an empirical formula, but it can be deduced from Planck's law of blackbody radiation.

(2) Since it is a fictional planet, the default density here is similar to that of Earth. According to the cubic relation that mass is radius, and the surface gravitational constant g=GM/R^2 is a quadratic relation to radius, the approximate solution is that the surface gravitational acceleration of a planet with 80% of the Earth's mass and density equal to that of the Earth is 0.89g.

(3) Horizon: The space-time interface at which events can be observed, which is equivalent to the boundary of the speed of light propagation under the neglect of special structures such as wormholes. (The event horizon ≠ event horizon, which is the event horizon of an "event", and the event horizon generally refers to the boundary around the black hole's singularity where the escape velocity is exactly equal to the speed of light.)

(4) The Moon and the asteroid belt have no atmosphere, and Mars is less than 1% of the density of the Earth, so humans in these areas live in artificial biosphere bases or space stations, and there are no aircraft with traditionally aerodynamic structures.

(5) For example, "The Martian", formerly known as "the Martian", means "Martian".

(6) Wormhole: The Einstein-Rosen Bridge is a strange structure that connects different regions of time and space.

(7) AU: An astronomical unit, the source of which is the distance from the Earth to the Sun. 1 astronomical unit = 1.496E8 kilometers = 498.67 light seconds. Whereas, 8 minutes is equal to 480 seconds, so it is usually said that it takes about 8 minutes for sunlight to travel to the earth.