That night, after having enjoyed the island to the fullest, all the members decided to stay the night.

After dinner, Jin decided to explain about the current status of the long-period planets.

Martha and Licia did not know yet, so he began with a brief explanation.

A certain star is approaching from far away, and if it continues at this rate, it will pass by our planet Ars around October 20.

"What?　What?"

"...... What do you mean, Jin?"

Licia and Martha were unable to grasp the situation, so Jin used the magic screen to explain it to them in detail.

"......Well, anyway, I kind of get it now."

Martha seemed to have taken it all in .

"......Wow, ......I guess you're in some kind of trouble. ......"

Licia felt a sense of urgency in her own way.

"So,......"

Jin reorganizes.

"According to Jack from the moon (UNY), we're going to pass by planet 5 soon. There is a possibility that their orbits will shift due to their mutual gravitational attraction."

"Hmmm... the problem is what happens after that."

Toa says with a slight frown.

"It would be better if it shifts away from Ars, but if it shifts closer to Ars, it could be dangerous.

Saki agreed.

"Hmm, can't we get closer to it with Jin's spaceship?"

Saki started to say something like that.

"Even so, I don't know. ......

The distance between Ars and Planet 5 is about 900 million kilometers.

The cruising speed of Jin's spaceship is about 200 kilometers per second.

It would take 52 days to get there, and there is no way he can manage that now.

"Wow, it's that far away. The universe is so big.

Saki looks a little distant.

"What?　Does that mean that the speed of the long period planet is faster than Jin's spaceship?

"If you compare it with the cruising speed, yes.

Jin explains that it is possible to go faster, but it would be dangerous.

"At that speed, even a collision with a small stone could cause serious problems."

< would probably be extremely rough, he adds.

"I think it will go faster as it gets closer to the sun, Celan. Eventually it will be about 400 kilometers per second.

This speed is astonishing since Halley's Comet is said to be moving at about 55 km per second near perihelion.

Comet ISON, which has recently come to the solar system, is said to have a maximum speed of 375 kilometers per second, so it is probably close to <>.

I'll leave it at that.

"At the moment, I can't do anything about it ......, but I'm still observing it, and I'm working on the spacecraft."

"I see. Jin, how big is a long period planet?

"Oh, about the same size as this Ars, apparently."

Jin answered Reinhardt's question.

"It's pretty big, isn't it?"

"Yes, it is. It's a little difficult to manage something that big.

In response to Saki's question, "Can't you do something about it? >>Saki's answer to the question, "Can't you do something about it?

"Yes. No matter how many djinn you are, you can't destroy a star. ......"

Incidentally, a very popular science fiction movie series describes a weapon that destroys a planet and estimates how much energy it would take to do the same thing.

According to the calculation, for a planet the size of the Earth, it would require 2.25 x 10 to the 32nd power of 10 joules.

This can only be obtained by converting the entire mass of 2.5 x 10.15 kilograms into energy.

For reference, this is about 7 days of energy emitted from the sun.

"No <> can provide that kind of energy. ......"

"Right. ......"

Jin's words were met with unanimous agreement.

"The universe is so big, it's on a different order of magnitude. Humans are so tiny."

Toa muttered in a deep voice.

Jin raised his voice to dispel the humidity in the air.

"Well, let's talk about this. I'd like to hear more about Saki and Goose. What did you find?"

The two had ventured into the interior of the island of Elektra in search of something unusual.

"Oh, we'll skip the black sap tree since it's already been reported, but we did find some herbs that could be used as spices..."

"Well, Rand, who came with me, did a quick , so I don't think they are toxic."

"That's interesting."

Jin leaned forward at the mention of the spice on the southern island.

"I hope you'll take it home and study it carefully."

Saki's eyes were filled with anticipation as she wondered if she could develop some new ingredients with it.

Jin, for his part, was happy to have more kinds of spices, so he agreed.

Jin is not a cooking expert and does not know much about spices, but as someone who enjoys cooking to some extent, he has discovered or put to practical use several spices.

Cinnamon, pepper, red pepper, turmeric, etc. are very close or have been found, but I would like to have more.

Saki and Goose had found about eight different kinds, enough to give Jin some hope.

"Thank you. I will study them carefully and let you know when they are ready.

"I'll look forward to it.

"Oh, and I found an interesting tree. It's a very light tree. It will grow fast. It's probably not as strong as it should be."

Jin looked at the sample Goose offered him and was convinced.

"It's balsa."

"Balsa?"

"Yes. As far as I know, it's the lightest wood in the world. In my previous world, I used it a lot for model building."

Since everyone knew that Jin had come from a different world, no one was surprised by his explanation.

"I see, balsa. I can see a use for it."

"Yes. It grows fast and it's light ......."

"It could be used on the ship, right, Gin?"

Marcia's voice was full of hope.

She had been a silent observer, but now she was suddenly very enthusiastic.

"I suppose so. For example, if we use it to fill the gaps in a ship, it will be harder to sink even if it gets flooded."

"Yeah, it would be great for small boats."

"It looks soft, so it would be better to use a different material for the outside.

Rodrigo and Marcia immediately began to think about how to use this new material.

Thus, the first day of our visit to the southern islands has been a productive one.

* * * * * * * * * * *

Late at night, after everyone has retired to their respective bedrooms.

Jin and Erza are also relaxing in <>'s bedroom.

"About what you said earlier..."

Erza, who had been looking out the porthole window, turns around and speaks to Jin.

"What will happen to the long period planet?

"Well, we don't have enough data to make a decision yet. We need at least another half month.

<

"...... but ......"

Hmm?"

"I'm sure Brother Jin will take care of it, I believe in him."

"Ha, thank you, Erza."

Jin hugged Erza's shoulder and turned off the room light.

"I have to live up to your expectations.

The moonlight shone faintly through the window.