Although the sun was not discovered, Xu Xingchen thought about it for a while and then took Chaoge back to Yunhai Main Port.

Yuanwang No. 1 has returned to the ground and continues to preside over the scientific research project of the entire alliance. Xu Xingchen is preparing to go back and communicate with his sister Yuanwang in person.

Two hours later, Xu Xingchen returned to his home port and went directly to the scientific research center.

Xu Xingchen has resumed the daily construction of the Tenth Company in the past six months, and the Chinese-type ship sissy has basically arrived.

The scale of the scientific research team has also expanded several times.

The original scientific research center was just a room, but now it occupies a single building.

All electronic reconnaissance ships and test ships are busy at the scientific research center led by the Yuanwang series.

Xu Xingchen greeted everyone when he was very excited and went directly to the report hall of the scientific research center.

This report hall is not an auditorium for a large number of people to report, but a place for scientific researchers to display discussions themselves.

So the hall is circular, with some seats set up by the surrounding walls, a small circular square in the middle, and a large three-dimensional projection is set up in the middle of the square.

Now the projection shows a huge vortex galaxy, densely packed with stars.

People familiar with astronomy can easily see that this vortex galaxy is the Milky Way.

Yuanwang 1, with more than a dozen scientific research ship girls, is now surrounded by the projection, discussing the space observation center to send a report back.

Xu Xingchen nodded and greeted the ship girl around him, walked quickly to Yuanwang No. 1 and asked:

"Sister Yuanwang... The galaxy on this projection is the Milky Way? We are still in the Milky Way? Where exactly are we? How far is it from the solar system?"

Yuanwang No. 1 nodded slightly and then answered in turn:

"Yes, we are indeed in the Milky Way, on the Perseid cantilever, located outside the Orion cantilever where the sun is located, with a straight line of about ten thousand light years."

Xu Xingchen opened his mouth and looked at the projection of the Milky Way beside him. Two places on the projection were specially marked.

One is the Ship Girl galaxy and the other is the solar system. The two are far away, and the Ship Girl galaxy is slightly outside.

The distance between two stars is about one tenth of the diameter of the Milky Way.

Xu Xingchen looked at this scene and subconsciously muttered to himself:

"Ten thousand light years... Even if there is a high sub-light speed spacecraft, it will take more than 10,000 years to reach..."

Yuanwang No. 1, with a calm smile as always, illustrates a rather cruel fact:

"So before the superluminal spacecraft is completed, we don't have to consider looking for the Earth in the solar system."

Xu Xingchen sighed again:

"So, do we have a way to confirm the existence of the earth now? Also, we can communicate with the earth..."

Yuanwang No. 1 nodded slightly and said:

"Our observation equipment is much more powerful than the Earth's observation equipment. We can judge whether there are planets in the solar system and whether there is a planet with accurate information.

"But the problem is that the solar system and the earth we observe in this way are actually the sun and the earth ten thousand years ago.

“If the earth had been destroyed at our current point in time, or hundreds or even thousands of years before that, we would not be able to confirm it now.

"We also have to wait hundreds, thousands, or even ten thousand years before we can confirm the corresponding changes that have occurred.

"The same is true for radio communication. The communication delay between us and the earth is 10,000 years, and a handshake is 20,000 years..."

Xu Xingchen immediately realized that the propagation of light and electricity was also fast. It would take ten thousand years for the photoelectric signal to be transmitted from the earth to the ship girl star, and vice versa...

Thinking of things like relativity, Xu Xingchen immediately grabbed his hair with a big head:

Gu Xin

"In this case, if we have a superluminal spacecraft and we cross directly to the earth, we will travel to the earth ten thousand years ago?"

Yuanwang No. 1 immediately shook his head and said:

"No, we cannot see the current earth, because the light emitted by the current earth will take ten thousand years to pass.

"To put it simply, I took a photo of the earth and came over to show us the photos. It took ten thousand years to run on the road.

"So it ran over ten thousand years and gave us the photos taken ten thousand years ago. The content displayed on the photos we saw was of course the Earth looked like ten thousand years ago.

"But the original body of the earth itself is still circling around the sun in place, and its own time will not stop.

"If we jump directly, we don't need to just run for ten thousand years to send us photos. We can directly contact the current earth."

Xu Xingchen felt that he understood, but he was still a little confused:

"Didn't it mean that approaching the speed of light will slow down time, and super-light speed will cause time to flow backward?"

Yuanwang No. 1 smiled and said:

"It's relative to getting faster and slower. If Commander yourself, flying a spaceship flying at the speed of light, heading from our planet to Earth.

"You look back at the ship's Girl Star on the spaceship. The picture of the ship's Girl Star is still, and this is the relative static of time.

"But this is actually just because the light of taking photos of the ship girl star is the same speed as you, and you two are relatively still.

"The light that gives you the subsequent photos will never catch up with you, so you can't send you updated photos, and the pictures you see will not be refreshed.

"You can only see photos of you leaving the Ship Girl Star at that time, so you feel that the time for Ship Girl Star has stopped. In fact, Ship Girl Star is still in normal circles.

"Consequently, when you look at the earth ahead on the spacecraft, you will feel that the time on the earth has become faster.

"Because the light that sent you photos of the earth is walking towards you, it can deliver photos of the earth to you without having to run to the ship girl for another ten thousand years.

"But no matter what, the photos it sends you are all photos from the past of the Earth.

"That's the photo that has been taken before, but has not had time to deliver it to your hand. Now it starts to speed up and play it twice in front of your eyes.

"You can't reach the earth that was past, and things on earth's past cannot be changed, because that has happened.

"After you arrive at the earth, you stop and see the earth at that time. It cannot be before or after.

"If you do not sail past, but jump across space, the video of the Earth's past ten thousand years will also jump directly, that is, one glance at it."

After hearing this, Xu Xingchen opened his eyes wide:

"In other words, the so-called speed that causes time to get faster or slower is just equivalent to video playback quickly and slow?

"This is actually just caused by signal delay? It's just like when you get stuck while playing online games and you feel your movements accelerated when you recover?

"But the facts have happened before, everything seems to be faster or slower, and has no effect on the facts themselves?"

Yuanwang No. 1 nodded again:

"Yes, reality is a very simple reality, and there may be a very mysterious description, but most of it is just because professionals use a more accurate expression that is actually more accurate, but in the eyes of ordinary people, it may be more brain-intensive.

"Most of the time, non-related people are conveyed to ordinary people with metaphysical thinking, which leads to the formation of more metaphysical fantasies of ordinary people who cannot fully understand them.

"If you don't consider light, just pretend that light does not exist, or overlaps yourself with the entire universe and think from the perspective of being the universe, then the time of the entire world will not be accelerated and slowed down, and they are all synchronized..."

After being stunned for a few seconds, Xu Xingchen slowly accepted the reality:

"So that's it... Sister Yuanwang, you can explain it like this, it's really easy to understand. In the final analysis, the universe is too large, and it takes years to calculate it if you just hurry up..."

Speaking of this, Xu Xingchen looked at the Earth and the Ship Girl Star again, looked at the Milky Way between them, and sighed helplessly:
Chapter completed!