– There is such a concept – the Doppler effect. I will not talk about it in detail, I will only say that this effect occurs when the observer moves relative to the source of radiation (or vice versa) and consists in a change in the wavelength or frequency of the signal; simply put, in the form of light as we perceive it. Most importantly, it helps us determine the distance and speed of stars, for example. With it, we learned that our solar system is moving relative to relic radiation at 370 km/s, and the local group of galaxies, including the Milky Way, the Andromeda Galaxy and the Triangle Galaxy, is moving at 650 km/s, again relative to relic radiation. Do you have any idea how those billions of stars travel at that speed? What force has thrown them so much that they have been flying like that for more than 10 billion years, and I can't imagine.

– I certainly am. If you look into it, really, how can a galaxy, and more than one, be traveling at this speed?

– Here. They also say there can't be parallel worlds. Everything is possible. And relic radiation is the primary, original, ancient radiation, the glow of the universe. That's what's left from that force, from that explosion that's still spinning and twisting everything. And these are not all the velocities of galaxies. There are other speeds that come from the expansion of the universe. That's the way it is, my friend.

"A friend??? What a quick thing to say," Amita said to herself. But only Irene heard it, except for herself. Amita did not dare to say it aloud. Parmen was not more than forty years old, and he looked rather athletic, so this kind of address and the passing of the word to you as if by the way, gave her a slight shiver, and it was not in unison with her resonant frequency of the heart, especially in the presence of Rutra, though he did not hear it, or perhaps he did hear it without letting her know, for it was Rutra.

– Thanks to the residual radiation from the Big Bang, we can see how everything in the universe is constantly moving and changing. And our galaxy is just one part of that process. And now I invite you to my table and give up my chair," the scientist said almost solemnly.

Amita, on the other hand, was lost in his manners. "You again…" and then, "I yield my chair." What could that mean? And why was I invited here in the first place?" – she thought as she sat down in a chair that looked like a fantasy installation. As Amita sat in it, the chair spoke to her. She jumped up in surprise.

– Uh-oh, stranger. I don't like to carry strangers," the chair squealed.

And after Amita stood up, the chair said:

– Okay, okay, I like you. I'm ready for you.

This both surprised and embarrassed Amita. Ruthra came up, laughing with Parmen.

– Get used to it, even a spoon can talk here," he told her while gesturing to the scientist, who nodded.

Ruthra kissed Amita on the top of her head, and Parmen smiled as he looked at her. She made a satisfied face, smiling back, though she realized that the scientist was not flirting with her. Amita had already realized the peculiarity of his character.

– I'll do a little digging while he entertains you," Ruthra said and kissed her again, now on the cheek.

– That's enough, that's enough," the scientist became indignant and, for some reason taking himself by the throat with all the fingers of his left palm, added: "This is already a breach of protocol. I protest," he said loudly, smiling to mark the jocularity of what he had said.

– Let me tell you how we break the laws around here.

– Is there such a thing? – Amita also asked in a joking tone.

– You bet. First, what we're violating. The speed of light in a vacuum is the absolute value of the speed of propagation of electromagnetic waves in a vacuum. I hope you agree with me that any event can have an effect on what happens after it and cannot have an effect on what happened before it. And from this it follows that the speed of any signal and elementary particle cannot exceed the speed of light. Thus, the speed of light in vacuum is the limiting speed of particle motion and propagation of interactions.

– We'll pretend that you've explained very clearly," Amita copied the accepted mannerisms Amita had noticed between Rutra and her colleagues, and jokingly made it clear that the scientist was asserting a pattern in science, but not explaining why or how.

He, however, already accustomed to her, continued:

– In nature, visible light and other types of electromagnetic radiation, radio waves, X-rays, gamma quanta and presumably gravitational waves propagate at the speed of light. However.

Parmen narrowed his eyes and raised his index finger upwards. Amita realized that here it was a peculiar gesture that could be interpreted in different ways.

– …there is also superluminal motion. But about this… – having said the last, the scientist put his finger to his lips, making it clear that this was secret information.

Amita, understanding him, smiled.

– This is such a world, which everyone calls as he/she understands: otherworldly, subtle, parallel. It is believed that if you fly at a speed greater than the speed of light, then a situation is possible when, say, you flew at the same time from one and the same place together with the light, then flew where this light has not yet reached, then returned and on the way met with this light. Confused?

Amita smiled, shrugging her shoulders.

– For some reason it is believed that it is light that determines chronology, that is, the movement of the passage of time, but I believe it does not. Imagine sound and light. Let's say they flew out together. The light flew away quickly, reached the target, did its job, for example, took some message, then came back and met the sound and said to it, "The information you are carrying is wrong, here is new data. By the time you get there, it's too late. I'm interpreting, but if you imagine someone flying at those speeds and something like that happens, it's not surprising. Now, once upon a time, people didn't know about the speed of light; they could compare, say, the speed of one thing to another, but if they were told, "Hey, while you're poking around, the light has already gone and come!" – that would be surprising to them. If they were told the magnitude of the speed of light, compared to the speeds they knew, they probably couldn't even imagine such a thing. For some reason it is now believed that there can be nothing faster than the speed of light, because, you see, it contradicts the formula. However, everyone sees quantum entanglement as clear as day, that is, how one particle transmits a signal to another particle at instantaneous speed and over any distance. So this proves, firstly, that someone sees without light, and secondly, that massless, supposedly massless, particles form their world. And negative mass particles? They've already found the antiproton. Have you heard of it?

– Found it.

– Surprising?

Amita smiled again, tilted her head to the side and lifted her left shoulder.

– And I defined "antivice." And it turns out it's the other way around in that world. You've studied a lot of things, as far as I know. And your education is not far removed from this topic, you've heard about it.

– About what?

– On quantum teleportation.

– Oh, no. It's a dark horse for me.

– In fact, there is nothing surprising about it. Since 2006, it has been shown that in the so-called quantum teleportation effect, the apparent mutual interaction of particles propagates faster than the speed of light. For example, in 2008, the research group of Dr. Nicholas Giesen from the University of Geneva, studying entangled photonic states separated by 18 kilometers in space, showed that this apparent interaction between particles is carried out at a speed of about one hundred thousand times greater than the speed of light. Surprised?