There is a change at the end of the previous chapter, December 5th

——

Mars and the Earth are planets orbiting the Sun and orbiting in an elliptical orbit with an approximate circumference for one year.

The Earth year is 365.25 Earth days, and the Martian year is 686.98 Earth days before the capture of Ceres, which is about once every 799.93 Earth days with the Earth.

This cycle is called the meeting and period, and it is the interval between the two stars, during which the two stars line up in a straight line with the sun, which is the opposition. Generally speaking, Mars oppositions are the closest distance between the Earth and Mars in each period, with an average distance of only 4.4 light minutes.

Every 799.93 days it would be and that was three hundred years ago.

In order to capture Ceres as the new Martian moon, the entire planetary system slowed down its orbit under that great "marriage plan". In order to regain equilibrium, they are pulled closer by the Sun's gravitational pull and accelerated again with the lost potential energy, thus shortening the orbital period of the new orbit to 666.66 days.

The period was extended to 807.86 days, or 2.21 years. At opposition, the average distance between the two stars is still about 4.4 light minutes, and there is almost no change in this unit of length.

In short, interstellar travel flights are now only allowed to open for a month before or after the Mars opposition every 2.21 years, and the number of visitors that can be accommodated in such a narrow window is quite limited.

During this period, starships require relatively few resources and are within the limits of the Federal Assembly for Sustainable Development Planning. In a sense, their opinions coincide with those of the former demon clan.

Taking the Wheel of Light as an example, the theoretical acceleration at rest is 2.6g at its maximum. Ignoring the effect of the gravitational pull on the acceleration of the shuttle, it takes about 30 hours of full power propulsion to complete a unilateral journey at Mars opposition—the first half of which accelerates at full force and the remaining half decelerates at full force to enter Mars' orbit.

In fact, it can't do that, and the more passengers and supplies it carries, the less acceleration it has, the longer it takes to sail through the stars, and the longer it takes to sail, which in turn means more supplies. In reality, the acceleration of an interstellar spacecraft is about 1.5g, and it takes nearly 50 hours to complete the journey.

A seven-day trip to Mars, four days on the way back and forth, and three days on Mars, which is not bad. However, there are only so many seats, and the number of flights that depart every 2.21 years can carry about 200,000 people in a total of 9 months in 20 years is also an impressive record.

Under normal circumstances, the vast majority of these limited seats will be awarded to the most capable people in various industries as rewards, and only a very small number will be sold to the general public, and these qualifications need to be obtained through a lottery on a special website.

Because of the cooperative relationship with the interstellar travel company, Kehule released three double tickets this time, which can be regarded as a fierce marketing, and the shipment volume skyrocketed by 6% within a month, which shows the popularity of Mars travel qualifications.

Lu Qian said that it was okay to buy half of it, one was that she thought that Hong Ye herself also wanted to go to Mars to see, and now that she had received the rewarded double ticket, she would solve all the problems by bringing him with her; The second is that she is worried that she can't afford to buy a complete ticket, after all, this thing is very expensive now, and she will have to find someone to go with her when she buys a double ticket.

She thought this way because she didn't know that Hong Ye already had a girlfriend.

In the end, he was still too young, so he didn't diverge his thinking just now: since the old humans are going to go out of the reserve, how can they not think about the problem that they are likely to be lonely for a lifetime, and they usually go out one-on-one!

Hong Ye heard Lu Qian's proposal and groaned slightly, the next opposition will be a certain day in January next year, and it is still early in time. And his enthusiasm for Mars travel is not high now, there are still so many places on Earth that he has not visited, what is the hurry?

This Heavenly Talisman was seen by Lu Qian, although it was not that she was worried about her, but she still had to get it as soon as possible for fear that she would have a long night. Moreover, it is also a problem to preserve the pattern, and if he waits until he implants the sympathetic module and then receives it himself, it may add to the changes.

"Well, Miss Lu will help you get it first, and then discuss how to deal with it." Hong Ye made half a decision, first put the ticket to Lu Qian, whether to sell it or not, and there is no need to rush to sell it to anyone.

Lu Qian quickly made a reassuring gesture, stared at the Tianji Talisman again, and when the program of the Identifier automatically translated it into a prize redemption page and displayed it in front of Lu Qian's eyes, she excitedly clicked the "Confirm Claim" button with her mind.

Suddenly, the page turned into an inflated party balloon, and then burst into the sky with colorful pieces of paper. When the rain settled, there was a virtual card with delicate dark lines floating in the air, with nothing but seven silver stars in two rows.

Surrounded by the certification seals of a number of certification bodies, and the image declaration of the embassies of the demon kingdoms on Mars.

"Titicaca~" Lu Qian didn't read the explanation carefully, she only kept taking screenshots in her mind, but she was thinking about what kind of text she would match later, which would make people more envious, jealous and hateful.

Before she could think about it, her face suddenly changed, and at the same time, there was a lot of commotion among the remaining members of the law enforcement team on the top of the mountain.

"Something happened, little master, I'll come to you later!" Lu Qian didn't have time to say more, and hurriedly ran down the mountain road, and at the same time transmitted the voice to Li Dapeng, and Li Dapeng relayed what happened to Hong Ye.

"Miss Lu said that just now a member of the law enforcement team found a temporary cave according to the traces left by the evil spirits, and then he possessed and incarnated into it to chase ......"

Hong Ye listened quietly, and the incarnation he knew was something similar to a prosthetic. The difference is that the prosthetic body is connected to the prosthetic brain, while the avatar is a puppet center that runs remote control services.

To put it bluntly, it's a remote-controlled robot, but because it's controlled through a sympathetic module, there's a sense of control that makes people feel like they're possessed, and the remote-controlled robot seems to have become the embodiment of the user.

"It's an eel-shaped robot, and it's good for burrowing, but it's too low...... It has now been captured by the demons and has been disconnected from its manipulators. ”

Li Dapeng said clearly, but Hong Ye wondered when he heard it: "Isn't it just an incarnation, how much can it be worth?" I don't think Miss Lu's face is like this little thing......"

Le Meng walked over with a serious face, obviously having received the incident. At this moment, when he heard Hong Ye's question, he opened his mouth to answer his doubts: "It really doesn't matter if there is only one incarnation, but with the battery carried by the incarnation, the evil ghost can hide for a while longer without showing its head." ”

Then he sighed: "It seems that this mission is a protracted battle." ”

If the mission goal does not show its head, they can only guard outside, holding back a large number of people. If it drags on for a long time and encounters some urgent tasks, then some personnel will have to be dismantled and transferred out, and then there may be omissions, so that the achievements will fall short, and everything will be in vain.

"But now that the demon has appeared, presumably the encirclement can be narrowed accordingly, and it probably won't be able to go far if it has to carry batteries just now." Hong Ye is quite optimistic, it's none of his business anyway.

After hearing this, both of them nodded in agreement.