Challenging Einstein’s simple universe.

“The standard cosmological model assumes that the Universe is uniform and looks the same in all directions when viewed on large scales. New research directly tests that assumption and finds evidence that the distribution of matter in the Universe does not fully align with this picture. Credit: Shutterstock.” (ScitechDaily, Is the Universe Lopsided? New Evidence Challenges Einstein’s Simplest Universe)

Einstein’s model of the simple universe requires adjustment. Even if the cosmic microwave background (CMB) seems homogeneous. In large size. We cannot leave the differences in the temperatures in the CMB without notice. But another thing is that. The universe seems lopsided. If another side of the universe is colder than the other, that causes energy flow into the lower energy side. This kind of energy lopsidedness can probably explain dark energy. 

There is a possibility that somewhere outside, or near the edge of the universe, is a quantum dot, some kind of thing that stretches the edge of the universe. This means that the outer edge of the universe could behave like some kind of amoeba. When that edge or standing wave moves outward. That causes the quantum low pressure at that point. This thing can cause a situation. 

“The local geometry of the universe is determined by whether the density parameter Ω is greater than, less than, or equal to 1. From top to bottom: a spherical universe with Ω > 1, a hyperbolic universe with Ω < 1, and a flat universe with Ω = 1. These depictions of two-dimensional surfaces are merely easily visualizable analogs to the 3-dimensional structure of (local) space.” (Wikipedia, Shape of the universe)

*********************

If Ω = 1, the universe is flat.

If Ω > 1, there is positive curvature.

If Ω < 1, there is negative curvature.

(Wikipedia, Shape of the universe)

*********************

That the energy starts to flow in the universe. The question is what causes the universe to stretch. If there is. Some kind of black hole. Outside the universe, it must be really enormous. A black hole outside the universe is impossible. The black hole should evaporate if it goes outside the universe. Another version is that. There can be some kind of bubble or cosmic supervoid in the hypothetical quantum field that surrounds the universe. If there is some kind of shockwave around the universe, that shockwave requires some kind of resistance. 

Without that resistance, the expansion of the universe could follow the de Sitter model. Or the modified de Sitter model. “A de Sitter universe is a cosmological solution to the Einstein field equations of general relativity, named after Willem de Sitter. “ (Wikipedia, De Sitter universe)

“It models the universe as spatially flat and neglects ordinary matter, so the dynamics of the universe are dominated by the cosmological constant, thought to correspond to dark energy in our universe or the inflaton field in the early universe. According to the models of inflation and current observations of the accelerating universe, the concordance models of physical cosmology are converging on a consistent model where our universe was best described as a de Sitter universe at about a time.” (Wikipedia, De Sitter universe)

The special event in the de Sitter universe is that. Its expansion is faster-than-light. The reason for that is that the scattering effect outside the universe is weaker. And that means a photon travels faster than it travels in the universe.  

“The exponential expansion of the scale factor means that the physical distance between any two non-accelerating observers will eventually be growing faster than the speed of light. At this point those two observers will no longer be able to make contact. Therefore, any observer in a de Sitter universe would have cosmological horizons beyond which that observer can never see nor learn any information. If our universe is approaching a de Sitter universe then eventually we will not be able to observe any galaxies other than our own Milky Way (and any others in the gravitationally bound Local Group, assuming they were to somehow survive to that time without merging)” (Wikipedia, De Sitter universe)

“The cosmic microwave background is relic radiation from the Big Bang. Credit: ESA/Planck Collaboration” (ScitechDaily, Is the Universe Lopsided? New Evidence Challenges Einstein’s Simplest Universe)

That means. The expansion of the universe in. The de Sitter model is faster than light. Without that resistance, the universe will collapse. In that model, nothing except gravity alone limits the speed of expansion of the universe. 

The cosmic supervoid could form. If lots of particles go outside the universe. Those elementary particles will evaporate or explode immediately. That forms the bubble in the quantum field that surrounds the universe. The reason. For. Why. We cannot see that the field is simple. If its energy level is lower than the universe’s minimum energy level. That means energy travels only in one direction. If there is a bubble. Their energy level is lower than the environment. That causes a situation. That energy field travels to that bubble, and it pulls the edge of the universe outward. 

But that requires. That. There is a quantum field outside the universe. This causes the idea. Maybe there are other universes. Or, logically. Thinking, there should be other universes. 

Do you know what the cosmic dipole anomaly is? That is the small difference between the cosmic microwave background (CMB), which uncovers that one half of the sky is cooler than the other. The difference between those temperatures is 1/1000 of a degree. Anyway, that difference is enough for energy to travel to the cooler side. Even the smallest possible difference between energy levels puts energy to move. 

This movement is not very fast, and those things might not have a meaning in the small-scale systems. But, in the universe’s scale systems. Those things have a different scale. When energy and material that the energy moves travel across the universe, the scale of the energy and material flow is so large that nothing can stop that energy and material flow. 

“The matter and CMB dipoles do not match up – the directions are consistent (top panel) but the amplitudes are not (bottom panel). Credit: Secrest et al., Reviews of Modern Physics 97 (2025) 041001” (ScitechDaily, Is the Universe Lopsided? New Evidence Challenges Einstein’s Simplest Universe)

Another problem is that. The matter and CMB dipoles have no match. Their directions are similar or the same. But the amplitudes have no match. This causes questions about the universe and its complex symmetry. But if the universe is asymmetrical. A structure that could look like a rugby ball, what could that thing mean? If another side of the universe is cooler than the other. That means that the point where the universe started might not be symmetrically in the middle of the universe. 

So if we want to compare that model with the Big Bang theory. That thing causes an interesting idea. What if the Big Bang was more like a Big Burst? In ordinary models, cosmologists think that the universe’s existence began in the Big Bang. The event or series of events that began in the middle of the universe. 

Could it be possible that the Big Bang happened on the other side of the universe? This means that the energy that formed the universe must come from the structure. That looks like a water tube. That is the one. And the simpler way. To try to model the asymmetry of the energy movement. The idea is that the energy. Or. wave movement, what the Big Bang released. Interacted with other fields. That thing caused the Schwinger effect. That turned the wave movement into particles. 

https://scitechdaily.com/is-the-universe-lopsided-new-evidence-challenges-einsteins-simplest-universe/

https://en.wikipedia.org/wiki/Dark_energy

https://en.wikipedia.org/wiki/De_Sitter_universe

https://en.wikipedia.org/wiki/Shape_of_the_universe

Black hole collisions put Einstein's theory to the test.

“A record-breaking gravitational wave from two merging black holes has given scientists their most detailed test yet of Einstein’s theory of gravity. Credit: Shutterstock” (ScitechDaily, Clearest Black Hole Collision Ever Recorded Puts Einstein to the Test)

The black hole is the most incredible object in the universe. And their collisions are even more extreme cases. During that process, the black hole pair sends gravitational waves. Sometimes, an idea is introduced that the superhigh-energy neutrino detected by the neutrino sensor a couple of years ago formed when a neutrino traveled between two colliding black holes just at the moment when their halos connected. In that moment, those halos could pump an extremely high energy level into that particle. In some other models. That particle traveled through the wormhole, the energy tornado that locks time inside that particle. 

But then. A black hole collision can open new ways to see. Is there some point when Einstein’s Theory of Relativity falls? The curvature of spacetime near a black hole causes a situation where all objects can travel at the speed of light. The reason for that is that. Black hole stretches. Space and time. When all particles and objects travel in the same direction. There is no scattering effect between those things. That. means. The lack of crossing energy fields means that nothing pulls energy out from the particle. Because everything travels in the same direction at the same speed, there is no quantum shadow at the front of those particles. The quantum field transports particles like a river transports caps. 

Inside a black hole, the situation is interesting. The black hole should behave like all other ball-shaped objects. That means there should be a point; there is no gravity in the middle of it. That point is smaller than a quark. But it allows the gravity waves. Travel also through that point. Those gravity waves hit the black hole like a drum. In another model, the black hole. Turns the gravity field into a string or quantum tornado. 

That thing transports energy out of the black hole. And. One of the things that we must realize is this. If there is a string that spins very fast, that string can bind energy fields inside it. If the ends of that string are in a lower energy level than this point. There, it binds energy that causes energy flow to the string. This makes the string act like a giant thermal pump. And that causes a situation where the quantum fields transport particles into that string. That thing causes a gravitational effect. The black hole is the whirl around the superstrings. In that model, sometimes the whirl jumps out from that string. That causes the situation where the string or quantum tornado releases energy. 

https://scitechdaily.com/clearest-black-hole-collision-ever-recorded-puts-einstein-to-the-test/

Uranus and Neptune might not be what they seem.

"Researchers have uncovered evidence that Uranus and Neptune could be far rockier on the inside than anyone expected. Their unusual magnetic fields and uncertain internal makeup show why new missions are needed to reveal what these planets are really like. Credit: Shutterstock" (ScitechDaily, New Findings Suggest Uranus and Neptune Are Not What They Seem)

“The Solar System is usually grouped into three main types of planets based on what they are made of: the four rocky terrestrial worlds (Mercury, Venus, Earth, and Mars), the two massive gas giants (Jupiter and Saturn), and the pair of ice giants (Uranus and Neptune). (ScitechDaily, New Findings Suggest Uranus and Neptune Are Not What They Seem)

“New research from a scientific team at the University of Zurich (UZH) suggests that Uranus and Neptune may not fit neatly into that final category. Their findings indicate that both planets could contain much more rock than previously assumed. The study does not argue that the two worlds must be water-rich or rock-rich; instead, it challenges the long-standing belief that an ice-heavy composition is the only viable explanation. This perspective is also supported by the discovery that the dwarf planet Pluto is primarily made of rock.”(ScitechDaily, New Findings Suggest Uranus and Neptune Are Not What They Seem)

New information suggests that Uranus and Neptune are rocky planets. This would be one of the most incredible findings in modern astronomy. The fact is that. Gravity doesn’t tell everything. About. The size of the planets.“Silicon is the eighth most common element in the universe by mass, but it very rarely occurs in its pure form in the Earth's crust. It is widely distributed throughout space in cosmic dust, planetoids, and planets in various forms of silicon dioxide (silica) or silicates. More than 90% of the Earth's crust is composed of silicate minerals, making silicon the second most abundant element in the Earth's crust (about 28% by mass), after oxygen.” (Wikipedia, Silicon). 

This means that if there is mainly silicon and lighter solid elements. Even. If the planet is large. 

It’s possible. It still has quite a weak gravity. Compared to its size. The massive rocky planets called “super earths” and “hot neptunes” are giving a tip that. Maybe there are misunderstandings about those two planets. The mass of Uranus is 14.536 times that of Earth, but that includes its massive atmosphere. The gravity on that planet’s surface is 0.886g. The mass of Neptune is 17.147 times that of Earth. Surface gravity of Neptune is 1.149g.  

As in the case of Uranus. Neptune's massive atmosphere. Raises that planet’s mass. So, are Uranus and Neptune gas planets? The gas giants are not always gas. They are probably quite small planets with a large atmosphere. But all of those planets have a point where solid layers begin. The gas giant formation begins. When. A quite small rocky point acts as the gravitational center. Then that gravitational center starts to collect gas and dust around it. 

The environment must be so stable that the solar wind doesn’t blow those gas and dust layers off, while the planet is forming. This means that planets like hot Jupiters. Or ultra-hot gas giants must form far from their suns.  The ultra-hot rocky planet can be closer to its star. And in some cases, those planets are made of melted iron. In cases like hot Jupiters, the massive gravity of those planets keeps them in form. If. Planet formation starts in interstellar space. That planet will turn. 

Into an extremely large. Interstellar traveller. This requires that the planet formation begins in an interstellar nebula, with no light elements. Those nebulae are supernova remnants and nova remnants. If. There are lots of heavy elements. Those elements cannot start fusion. There is another theoretical possibility. That the small star could turn into a planet. The idea is that the supernova near a small star or brown dwarf can push so much material away from that star that its fusion ends. 

https://scitechdaily.com/new-findings-suggest-uranus-and-neptune-are-not-what-they-seem/

https://en.wikipedia.org/wiki/Neptune

https://en.wikipedia.org/wiki/Silicon

https://en.wikipedia.org/wiki/Uranus

Nanopores are magnificent tools.

"Cell Membrane Nanopores Releasing IonsA representation of a cell membrane (rice) with nanopores (broccoli) releasing ions (seeds). Credit: Aleksandra Radenovic/EPFL"  (ScitechDaily, Scientists Uncover How Tiny “Nanopores” Learn Like the Brain)

"Scientists found that nanopores’ electrical charges control how ions flow and when pores temporarily shut down. The discovery could allow engineers to design nanopores that “learn” like synapses for next-generation computing.” (ScitechDaily, Scientists Uncover How Tiny “Nanopores” Learn Like the Brain)

“Pore-forming proteins appear across many forms of life. In humans, they help protect the body by supporting immune defenses. In bacteria, they often function as toxins that create openings in cell membranes. These natural pores regulate the movement of ions and molecules, and their precise control over molecular transport has made them valuable in biotechnology, including DNA sequencing and molecular sensing.” (ScitechDaily, Scientists Uncover How Tiny “Nanopores” Learn Like the Brain)

Nanopores can act as artificial neurotransmitters. And they can also revolutionize medicine. And others. Types of technology. Those technologies are things. Like miniature sonar technology...

Learning nanopore. It is the tool for the next-generation machine intelligence. Learning nanopores can act like neurotransmitters in the next-generation computers. If.  A nanopore is made of an electrolytic liquid. It can act as a small hard disk that transports data between the transmitter and receiver. The system can use a small electromagnetic system. Like, a miniaturized nanoradiotransmitter to write information on those nanopores. Those nanopores can operate between processors. These operate as artificial neurons. And those nanopores act as neurotransmitters or chemical qubits. The system can create those pores and then recycle the liquid that it uses. That can make it possible. To use those pores in neuro- and quantum computers. 

Nanopores can act as a chemical capsule. For viruses and other chemicals. Nanopore. It can transport very reactive chemicals. Like white phosphorus. In the wanted points. In military technology. Nanopore can transport neuro-agents like VX past the sensors. In that case, a chemical weapon is encapsulated. Into the soap. Or some other non-poisonous transporter. That chemical agent is enclosed in the nanobubbles. And when those bubbles are broken. By using an acoustic signal. Or some kind of flame, like napalm, lasers, and microwaves. That releases the nerve agent. 

Nanopore is. One of the most interesting things. In modern chemistry. It can act as a platform that allows long lipedi molecules to form on its shell.  Nanopores and micropores can be used. To take samples from humans or other things. The nanopore can close things. Like. Viruses or some other cells inside them. The pore will surround the object. And then the nanomachine can transport that captured thing away. 

The nanopore can act as an acoustic resonator. Acoustic signals can make those pores oscillate. And that makes them multiply themselves. So, a nanopore can fill the cells. Block the veins. And that makes them useful in medical use. This thing also makes them suitable for the new types of weapons. There is a possibility. The nanopore can interact with ions. Or it can have amino acids on its shell. If. The nanopore is made of the receiver’s own body fluids. That opens the path. To transport viruses into the desired cells. 

Those amino acids can act as carrier proteins. That makes cells transport it to the right objects. The ion transporter makes it possible. To control the nanopore with magnetic fields. And that is one of the biggest things in this kind of system. Today, it is possible. To create a nanopore by using pistons that move back and forth in a small chamber. Another possibility is to use the whisk that rotates in the chamber. 

The system can also use chemical things to make those pores. The carbon acid creates bubbles in water. Or the system can use electrolysis. For. The bubble making. Nanopore itself can be effective. The system can make them from the environment. The nanobubble or nanopore can transport molecules. The idea is that the nanopore is made from blood plasma. And then the medical molecules or viruses will be put inside those pores. The pore itself. Denies the immune system reaction against those viruses. This thing makes those pores an ultimate tool for gene therapy. 

https://scitechdaily.com/scientists-uncover-how-tiny-nanopores-learn-like-the-brain/

Reseachers engineer photons in space and time.

"Controlling the Structure of Photons in Space and Time

Researchers from Wits University and Universitat Autònoma de Barcelona show how controlling the structure of photons in space and time enables tailored quantum states for next-generation communication, sensing and imaging. Credit: Wits University" (ScitechDaily, Rewriting Quantum Optics: Scientists Engineer Photons in Space and Time)

Photons themselves have no time. This means that. Theoretically, it is possible to save information in photons. And that information remains as long as the photons. Information can be saved. Bending a photon into curves. This thing makes photon a good information transporter, if those curves remain in their form. This technology is under research. Photonics allows us to circumnavigate the theory of relativity. The idea is that two photons are in a superposition and quantum entanglement. 

Then those photons can transmit information virtually faster than light. Theoretically, it is possible to create a quantum entanglement. There, the receiving side moves precisely in the same moment as the transmitting particle. The idea is that the quantum entanglement would be like a stick. 

In the case that we could create a stick. That is 4,5 light-years long, we could transmit information between Earth and Alpha Centauri faster than radio waves. This means that when the astronaut pushes that stick in Alpha Centauri. The receiver sees that stick’s movement. The stick acts like an ultra-long gramophone stylus. But information travels as a wave between superpositioned and entangled particles. 

But sometimes quantum entanglement seems to break the speed of light. The thing that causes. This phenomenon is that the speed of light is a cosmic constant that depends on the medium through which light travels. The speed of light is slower in a medium than in a vacuum. This means the speed of light is slower in water than in air. The thing that slows or limits the speed of light. This is the scattering effect. 

We can think that. If. There is a vacuum tunnel in the air. Light travels faster. In that vacuum tunnel than outside it. The reason why quantum entanglement seems to break the laws of physics is simple. Information travels in the quantum tunnel. That turns the scattering effect weaker. Maybe someday we can transport information through space and time by using superpositioned photons. The idea is that. Another photon will be put into the higher energy level. By trapping it. In the chamber. That transmits energy into it. And this slows time in that photon. This photon will transmit information to another photon. That energy level is lower. Otherwise. If we want. To transmit information. 

The photon itself has no time. But it’s possible. That. Time moves more slowly in a photon. Whose energy level is higher than that of another photon. The system that transports the information from the future could be the ball. There is a quantum-sized black hole. The black hole itself or the photon. That which is positioned around the black hole transmits information to another photon. That is at a lower energy level. The idea is that. Time dilation in a part of this system. That is, the higher energy level. Makes time travel slower in that part. Then quantum entanglement transmits information to the past. 

We must not transmit information from a photon itself. We can transmit information from the field that surrounds a photon. So. If reseachers want to transmit information from the future, they must create quantum entanglement through time. They must keep the object. That transmits information. On a higher energy level. Than the energy level. It is in the receiving particle. That is one thing that could be possible in the future. The ability to transport information from the future to the past is one of the most fascinating things that we can imagine.

https://scitechdaily.com/rewriting-quantum-optics-scientists-engineer-photons-in-space-and-time/

How intelligent can a computer be?

We must determine “intelligence”. Before. We start to think about that. Somewhere. Intelligence is determined. As the ability to make a decision. By connecting data. That comes from sensors to memories. Then the memory block is connected to some action. Activates the action. That is connected to the memory block. The memory interconnects senses and actions. This is one way to think about intelligence. The next question is this: can a computer be intelligent? Even if that system doesn’t have deep knowledge? And then again. How to determine deep knowledge? 

Deep knowledge or deep learning can be determined. As a series of thoughts, we try to find something deeper in things like chess. Chess can have a role: As a test. That measures strategic thinking or tactical skills. But do those things have something to do with chess itself? When we play chess, we must not think about those things. We must just. Follow the rules. Rules make things acceptable or unacceptable. But then we can say that chess is not the only thing that measures intelligence or strategic abilities. Even the best chess player doesn’t always know how to make chess programs. And even the best programmers might not be good chess players. They might have no chance to practice.

Or maybe. They like to play.

Some other computer games. Intelligence doesn’t mean that the system or actor knows everything. If. We say: the information only. That means intelligence; then a dictionary book is intelligent. Being intelligent means. The ability to apply information to other things and situations. Consciousness means that the creature knows itself. But then, how does a creature show its environment? Is it conscious? Many times, people say that consciousness. Means that the actor. Like an organism defends itself. But then. Things like bacteria also. Defend themselves.  How high a level of consciousness? Do bacteria have? 

When we try to find deep knowledge. Or on some deeper level in some actions. We must ask, does the action have those deeper levels? Or does the action even include some deeper levels that mean something? That means deep knowledge is a chain of thoughts; the thinker can ask. Why does something have some shape? Why do traffic signs have certain shapes? Or colors. But those things. Have no connection with driving. While we drive, we must know how to react to those signs. 

Or, deep thinking?  Do we need deep thinking all the time? The idea is that we can drive cars without knowing anything about things. That happens in the engine. This means we can drive a car by just pressing the pedals and turning the wheels. And then we must follow the rules. We must know traffic signs. Or, rather, we must know how to react to traffic signs. We must not know why the traffic sign is at a certain point. We must know its name. We must know how to react. Do we face situations? We must think. About. The backgrounds of the things that we make. We do many things without even thinking about why we make something. 

If we try. To solve a mathematical formula. We must know how to solve that precise formula. But we must not know all mathematical formulas. We must know. The rules. And how to solve that problem by following mathematical formulas. The deep knowledge and deep learning. Means that we try to find something deeper in actions. That will not need, or that will not have any deeper knowledge.  Are there. Any deeper levels in all things that we do? 

When we try to make a robot that plays chess, the robot must only know how to move buttons, how to hit other buttons, that white starts, and then other rules like promotion and checkmate. Those things make the robot win chess by following the rules. And that makes it possible to win chess. The game can be accepted by chess referees only if the robot follows the rules. 

But when we think about that game, we must ask: what type of other deep knowledge? Or deep understanding? Does that game need? What kinds of deep levels can we find in those games? And if the computer wins that game, are we dumber than the computer? That is one thing that we should ask from the mirror. The computer beats us in computer games. But does it know how to make the beef or salad? Maybe we make better food than a computer. 

https://bigthink.com/books/blaise-aguera-y-arcas/

Terahertz radiation can be a breakthrough in communication and observation tools.

“Frequency comb converted into light by a cell with Rubidium atoms. Credit: Mateusz Mazelanik, Wiktor Krokosz, University of Warsaw” (ScitechDaily, “Quantum Antenna” Breaks Barrier in Measuring Elusive Terahertz Signals)

“A research team has created a quantum antenna capable of precisely measuring terahertz frequency combs for the first time.” /ScitechDaily, “Quantum Antenna” Breaks Barrier in Measuring Elusive Terahertz Signals.)  The new system benefits Rydberg atoms as a measurement tool. 

“Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency (THF), T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the International Telecommunication Union-designated band of frequencies from 0.1 to 10 terahertz (THz) (from 0.3 to 3 terahertz (THz) in older texts, which is now called "decimillimetric waves", although the upper boundary is somewhat arbitrary and has been considered by some sources to be 30 THz” (Wikipedia, Terahertz radiation)

Terahertz radiation’s position in the electromagnetic spectrum. It is between microwaves and infrared radiation. This makes them an interesting alternative for radio waves and microwaves in communication and observation tools. The terahertz Doppler-radar, or terahertz lidar. Can be two antennas that orbit each other. This kind of teraherz-doppler system can be the tool. That makes the stealth technology unable to protect things like stealth fighters. 

Or, otherwise saying. Terahertz radiation can hack the stealth technology. Lidar-type terahertz scanners. It can open a new era for stealth and anti-stealth systems. The idea is that. It’s possible to turn those terahertz signals away from the stealth plane. But the use of those systems requires that the aircraft must use active systems. The idea is that the coherent terahertz beam. Will be shot against the terherz lidar. The system should turn the terharz signals away from stealth aircraft. The ground-based system can see that radiation. But another thing is that. Those systems can also have lasers. That reacts to terahertz radiation. The combat laser system sees the target. 

It activates a laser. Or a coherent microwave. That should destroy the terahertz radar. Another thing is that. The terahertz-jammer requires precision terahertz frequencies. The lidar system uses. And that new antenna can make. These types of systems are possible. 

The stealth technology. That focus is only on the radar frequency, which cannot affect the terahertz radiation.  Modern chameleon camouflage. That can make an object blend in with the background. But it is unable. To affect terahertz radiation. This means the terherz-scanner. It can make many of the most effective camouflages. And stealth systems are unable to work. The same systems that detect radio and laser scanners cannot detect terahertz radiation. 

And that’s why this radiation type is used in body scanners, the mission is to uncover hidden weapons under clothes. Terahertz radiation can also be used in communication tools. Terahertz radiation can make the same things. That other electromagnetic waves can do in communication tools. The biggest difference. Between terahertz radiation. And radio transmission is this. Terahertz radiation is harder to disturb. Using electromagnetic fields. This makes the radiation suitable for the next-generation internet.  Terahertz radiation is a promising thing. But a lot of work must be done with those systems. That. They can make the new communication revolution. 

https://interestingengineering.com/military/china-chameleon-camouflage-military-use

https://scitechdaily.com/quantum-antenna-breaks-barrier-in-measuring-elusive-terahertz-signals/

https://en.wikipedia.org/wiki/Doppler_radar

https://en.wikipedia.org/wiki/Rydberg_atom

https://en.wikipedia.org/wiki/Terahertz_radiation