Wednesday, July 30, 2025

The new theory about the origin of the universe.







"A radical new theory rethinks how the Universe began, using only gravity and quantum physics, no speculative fields or assumptions required. If confirmed, it could reshape our understanding of cosmic origins. Credit: SciTechDaily.com" (ScitechDaily, Rewriting Physics Textbooks: Scientists Propose a Bold New Theory About the Universe’s Origins)


The material, or particles, can form wave movement. And wave movement can form from particles. We can call energy a wave movement, and material a condensed form of energy. But the problem with the origin of the universe is that material or energy cannot form from emptiness. If there were some kind of particle cloud where particles vaporized into the wave movement, the crossing points of those waves could form particles. The key elements in this new theory are De Sitter Space and De Sitter Universe. 

"De Sitter space is the maximally symmetric vacuum solution of Einstein's field equations in which the cosmological constant is positive (corresponding to a positive vacuum energy density and negative pressure).(Wikipedia, De Sitter Space)

"A de Sitter universe is a cosmological solution to the Einstein field equations of general relativity, named after Willem de Sitter. 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 t=(about)10−33 s after the fiducial Big Bang singularity, and far into the future. (Wikipedia, De Sitter universe)


The Big Bang theory is one of the most dominant cosmological models. The idea in that theory is that there came an energy spike at some point. And then that energy spike collapsed, causing an energy wave that traveled in spacetime. The problem with that model is that it doesn’t explain where that energy came from. The wave-particle duality means that the wave movement can transform into particles and particles can turn into wave movement. But the problem is that wave movement or particles cannot form from nothingness. The problem with all theories about the origin of the Universe is always where that wave movement that condensates into material came from. 




"A team of scientists proposes a new model of cosmic inflation that reveals how gravity and quantum mechanics may be sufficient to explain how the structure of the cosmos came into being. Credit: University of Barcelona’s Institute of Cosmos Sciences (ICCUB)" (ScitechDaily, Rewriting Physics Textbooks: Scientists Propose a Bold New Theory About the Universe’s Origins)

An interesting thing is this: if we take any particle cloud to the absolute vacuum, there are no quantum fields that cause particles' fast vaporization. Those particles turn into a wave movement. And that reaction can be extremely rough. So, a particle cloud can be the origin of the universe. But, where did those particles or the energy that forms those particles in wave-particle duality (WPD) come from? 

The new theory of the origin of the universe closes speculative fields. The idea is that gravitational waves and the quantum ripples caused reactions that formed the Universe. In this new model, the Bose-Einstein condensate gravitons caused a reaction that we know as the Big Bang. The Universe began with the well-established De Sitter cosmic state. So, the origin of the universe was in the condensed gravity waves. 

And the question is always where those gravitational waves that condensate into the cloud of Bose-Einstein graviton condensate came from. The problem is that nobody has seen gravitons yet. The other question is that the gravitational wave cannot travel in space; there is nothing. There must always be something or some kind of field that turns into particles. And could there be gravity in spacetime where there is absolutely nothing? 

In some models, the origin of the universe is in some kind of black hole eruption. This model only moves the problem of the origin of material and energy back, even if the so-called phoenix-universe model, where the universe collapses in a Big Crunch, forming a black hole where the entire material in the universe would be condensed into one small point. And then, because there were no quantum fields that could resist the black hole’s energy flow, the black hole erupted or detonated. But that model has the same problem as other models. Where was the original black hole and material that formed the universe? 

In some models, the universe formed from the field interaction. The idea of this model was that there was a field or wave movement before the Big Bang. Then, formed a hole in the wave field. That hole caused a situation where wave movement, which we can call energy, started to fall into that hole. That collapsing hole or bubble collected energy into the middle of it. And then that effect formed like some kind of vacuum bomb. Impacting waves formed the first particles, and then those particles formed other particles. And the problem is always the same. Where does that wave field come from? 


https://phys.org/news/2025-07-rethinking-big-gravity-quantum-ripples.html

https://scitechdaily.com/rewriting-physics-textbooks-scientists-propose-a-bold-new-theory-about-the-universes-origins/

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

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

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

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

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

https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality

Monday, July 28, 2025

Uranus delivers more energy than it gets from the sun.



"Using decades of space data, scientists have cracked the mystery of Uranus’s hidden heat. While weaker than other gas giants, this internal warmth rewrites what we know about the icy planet — and fuels excitement for a long-awaited NASA mission. Credit: Shutterstock" (ScitechDaily, A Hidden Heat Source on Uranus Just Changed What We Know About Planets)

Outcoming particle flow can form a point-shaped thermal point in the atmosphere.

Can that extra energy form in friction, or in internal radioactive decay? Or does some kind of external radiation beam push energy to that planet's atmosphere? If some kind of beam of energetic particles hits Uranus's atmosphere, it forms a thermal point at that impact area. 

Uranus and its internal heat source challenge theories about planet formation. The heat source is visible in the Uranus atmosphere. That means Uranus shines more energy than it gets from the sun. There is a rocky planet inside that great atmosphere. The size of that structure compared to the planet's size is very small. That rocky planet is smaller, or its gravity is weaker than on Earth. The large atmosphere around that planet is the thing that we see when we look at that distant gas giant. The thermal source on that planet can form in a similar way to that on Earth. The mass of Uranus is far higher than that of Earth if we measure it from the highest point of the planet’s atmosphere. 

Uranus's pole can also pull high-energy particles into that planet's atmosphere. And that particle flow can raise Uranus's temperature. 

The atmosphere forms most of Uranus ' mass. The temperature of that atmosphere is about 45 Kelvin. And its top temperature is about 50 Kelvin. Or, 50 degrees over absolute zero. Hydrogen, maybe methane, and helium form that atmosphere. In theories, there was a small rocky planet somewhere in the Kuiper Belt, or in some theories, Uranus was a rogue planet that collected its atmosphere around it in extremely stable conditions. In extremely stable conditions, the small planet can collect a huge gas shell around it. The tilt axis of Uranus supports the theory that it could be some kind of rogue planet. The thing that makes Uranus interesting is that it's lighter than it should be. Neptune is far heavier, and that causes discussions about the origin of Uranus, which is the same size but far lighter than Neptune. 

The internal radioactive material, like radioactive potassium, can form an internal temperature that is measurable on Earth. Uranus’s atmosphere is far colder than Earth's, and that means that IR systems can detect that thermal source more easily than on warmer planets. The other thing is that the layers in Uranus's atmosphere don’t move at the same speed. The difference between the speeds of the atmosphere’s layers can cause friction. The laying axle of that planet means that Uranus acts like a locked planet. The temperature difference between night and day causes massive winds in its atmosphere. Uranus' rotation is 17 hours 14 minutes. But because the planet’s tilt is 82 degrees, that means Uranus turns its other pole to the Sun. 

The other explanation can be that the wind in the Uranus atmosphere forms friction at the point where gas meets ice or liquid form. That means the energy source can be in friction in the liquid or gas layers in Uranus’s structures. In models, there is liquid gas around the icy layer that surrounds the rocky layer. When energy from the sun hits Uranus's atmosphere, it raises its temperature. The thing that makes gas move is the difference in temperatures in the atmosphere. Even if Uranus has no solid surface, there can be structures that can cause friction in that planet’s atmosphere. The secrets of Uranus are big. There might be many secrets that wait for their finder in that icy and mysterious world's atmosphere. 


https://scitechdaily.com/a-hidden-heat-source-on-uranus-just-changed-what-we-know-about-planets/


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

Friday, July 25, 2025

The universe, its particles, and quantum fields.



"New research suggests that collapsing stars may serve as natural laboratories to uncover hidden neutrino behavior, with potential implications for the birth of black holes and neutron stars. Credit: Shutterstock" (ScitechDaily, The Universe’s Most Elusive Particles Might Be Talking to Themselves)

Wave-particle duality (WPD) means that particles can turn into energy and vice versa: energy or energy fields can turn into particles. WPD means that particles are only the denser points in the quantum fields. The fact is that the particles require quantum fields for their existence. Without those quantum fields, there is no resistance that can push particles into their form. And that means if we take quantum fields out, energy flows away from particles, ripping them into pieces. And that turns particles into wave movement or quantum fields. Dark energy can form in some sub-particle structures that are too small to detect. 

But anyway, if a particle goes out from the universe, it turns into a wave immediately. And that makes it hard to detect anything outside the universe. The temperature outside the universe is unknown, but it's lower than 3K radiation or Planck radiation. It might be lower than the thermal minimum in the universe. And if that energy level is lower than the thermal minimum, 0K or -273.15C. That means energy can travel only out of the universe. That makes it impossible to observe things outside the universe. 

The most elusive particles in the universe can play an important role in neutron star and black hole formation. 

Neutrinos are almost massless particles. Their interaction with other particles is very weak. And that makes them travel through planets without touching anything. But today, researchers noticed a new interaction between neutrinos. That means a neutrino can interact with other neutrinos. And that makes those elusive particles more interesting than they were before. When a neutrino travels through objects, it takes some part of the quantum fields with it. That means those quantum fields transfer energy to the neutrino when it travels through them. 

Can the gravitational version of the Meissner effect be possible? In that gravitational Meissner effect, gravitational waves act like electromagnetic fields in the Meissner effect. And can this kind of effect also explain why neutrino interaction is so weak? The case where EM-fields travel past the particle that turns them denser than that thing allows the particle tunnel itself through walls? So is the spin of the neutrino so fast that a similar effect to the Meissner effect can make it almost weightless. If a neutrino hovers in an EM-pocket, it's hard to detect. 



"Diagram of the Meissner effect. Magnetic field lines, represented as arrows, are excluded from a superconductor when it is below its critical temperature." (Wikipedia, Meissner-effect) Tc=Temperature Critical. Could there be a similar critical level to gravity?

In the theoretical model, the gravitational waves in extremely dense, fast-spinning particles can act in the same way as electromagnetic fields act in the so-called Meissner effect.  That theoretical phenomenon can be called the gravitational Meissner effect. Or the antigravity. 

If the gravitational Meissner effect exists, that thing can make gravitational levitation possible. The idea is that the fast-spinning particle can turn into a quantum-sized black hole. And that thing makes it possible that gravitational waves travel past the particle. The gravitational Meisner effect can explain some details about black holes. Radiation that travels past those objects closes them inside the radiation bag. So the thing that makes black holes special is that regular and quantum gravity are connected in them. The fast-spinning, extremely dense objects can create a situation where they don't let gravitational waves travel through them. That thing can make the gravitational Meissner effect possible. 

When a neutrino beam travels through the star, that thing can act like airflow that travels through rooms. The neutrino beam takes energy with it. And that decreases the temperature in the star's core. That thing can cause a very dangerous situation when the energy level decreases in the star’s core and the route of the neutrinos. When the energy level decreases, that means the energy that can resist gravity turns lower. And that neutrino beam can cause situations that start to explode sooner than it should. When the energy level decreases, that means the star's outer layers start to fall to its core, and that can cause extreme peaks in the energy production. 

Can a neutrino be the thing that glues quantum and regular gravity together? The idea in quantum gravity is that some kind of radiation or small particles that travel through the particles turns them cold. When something takes energy away from an object, outgoing energy tries to replace that energy. That movement continues until energy levels inside and outside the object are at the same level. In some models, the spin of particles binds quantum fields to them. 

That means particles turned those fields into kinetic energy. The energy that the particle binds pulls other particles to that thing. So, theoretically, a quantum-sized black hole requires that the spin of the particle turns so high. 

When large and dense groups of particles spin, they bind lots of energy into them. Without that spin, that particle’s existence ends. The question is, where do particles put the energy that they store? The outside quantum field pushes structure into its form. If that quantum field turns too weak relative to the structure, the energy that comes out from the structure destroys it. The question is, could the extremely fast-spinning quantum black hole emit gravitational radiation past it? That causes an interesting question about the gravitational Meissner effect's existence. If that Meissner effect's gravitational version exists, that means the gravitational levitation can turn into reality.   


https://bigthink.com/starts-with-a-bang/quantum-fields-quantum-particles/


https://scitechdaily.com/the-universes-most-elusive-particles-might-be-talking-to-themselves/


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


https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality

 

Tuesday, July 22, 2025

The mysterious deep space fossil, a new member of our solar system, can rewrite the history of the solar system. 




"A newly found icy object, Ammonite, may be a 4-billion-year-old fossil from the Solar System’s edge—and it’s casting doubt on the Planet Nine theory. (Artist’s concept.) Credit: SciTechDaily.com" (ScitechDaily, ‘Ammonite’: A Mysterious Deep Space Fossil That Could Rewrite Solar System History)

"A mysterious icy object discovered far beyond Pluto is rewriting what we thought we knew about the Solar System’s past." (ScitechDaily, ‘Ammonite’: A Mysterious Deep Space Fossil That Could Rewrite Solar System History)

“Nicknamed “Ammonite,” this ancient world has an orbit unlike any other, placing it in the ultra-rare class of “sednoids.” Its discovery, made by the Subaru Telescope and confirmed through years of orbital data, challenges theories about Planet Nine and hints at a possible planetary shakeup billions of years ago. With a stable orbit lasting over 4 billion years, Ammonite may be a cosmic fossil—a remnant of a chaotic era when invisible forces or even lost planets shaped the outskirts of our solar neighborhood.” (ScitechDaily, ‘Ammonite’: A Mysterious Deep Space Fossil That Could Rewrite Solar System History)

The mysterious object called “Ammonite” could make Planet 9 non-existent. The Ammonite dwarf planet is Sednoid. That means it's similar to Sedna. 

There is a possibility that this mysterious object would not exist if Planet 9 is real. And that makes the Planet 9 mystery more interesting than ever before. Planet 9 is the mysterious gravitational effect that causes anomalies in Neptune's trajectories. Planet 9 is also introduced as the reason for Neptune's largest moon, Triton, to be opposite the trajectory of other Neptune moons. 

The problem with all those theories is nobody has seen Planet 9 yet. Planet 9 remains a hypothesis. The mysterious gravitational effect remains, but that's all we see. Modern telescopes have found many objects from the Kuiper Belt. But none of them were large enough to cause anomalies in Neptune's trajectory. Sometimes Planet 9 is offered as an explanation for Uranus's X-ray flares and Triton icy geysers. 

There are many things that tell us that something strange happened in the past at the Kuiper Belt. The Ammonite and Eris are dwarf planets whose orbits are interesting. They are stretched, and they are not in line, and there is a possibility that some ancient planet that left the solar system can cause those strange trajectories. Maybe that strange object followed the parabolic trajectory and pulled those objects that you can see in that map to their trajectories. 

But that thing is only a hypothesis. There are models that Planet 9 was so far away from the solar system that some cosmic collision just pushed that planet away. The other model is that Planet 9 was some rogue planet, and the interesting question is this: could that object hang around somewhere between Proxima Centauri and the Sun? 

The Ammonite is a thing. That might explain many things about the past of the solar system. And there can be theories that the Ammonite is the moon, that the mysterious Planet 9 left behind it if it left the solar system a long time ago. 

But if Planet 9 is a primordial black hole, that changes the game forever. If  Planet 9 is a primordial black hole that lurks under the icy shell of some dwarf planet, that explains many things. Hypothetical primordial black holes mean that the thing that causes anomalies in Neptune's trajectory must not be big. So, could some of those already known dwarf planets be Planet 9? 

In some models, “Planet 9” is a small primordial black hole. That black hole could exist in the regular-looking asteroid or dwarf planet. In that model, the black hole can collect ice balls around it. Hollow ice shells can orbit that small black hole. 

The hypothetical primordial black hole is the planet-mass ultra-small black hole. The problem is nobody has seen that type of black hole yet. But if they exist, some known dwarf planets can be that hypothetical Planet 9. So, if that kind of black hole exists in the solar system, that means this thing could be the discovery for the next millennium. 

In some scenarios, "Planet 9" is an energy impulse that can form when antimatter hits the impact wave in the heliopause. That energy impulse can cause strong effects on Uranus's Neptune and the dwarf planet's trajectories. That is one of the things that might explain something about the mystery called Planet 9. 


https://www.cfht.hawaii.edu/en/news/AmmoniteJul2025/


https://gizmodo.com/astronomers-discover-potential-dwarf-planet-lurking-way-beyond-pluto-2000630151


https://www.livescience.com/uranus-x-ray-radiation-detected.html


https://www.sciencing.com/1914379/new-world-discovered-in-our-solar-system-ammonite/


https://scitechdaily.com/ammonite-a-mysterious-deep-space-fossil-that-could-rewrite-solar-system-history/


https://www.space.com/black-holes-solar-system



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


https://en.wikipedia.org/wiki/2023_KQ14


https://en.wikipedia.org/wiki/Sedna_(dwarf_planet)




Friday, July 18, 2025

Time, gravity, and photons.


"A representation of the evolution of the universe over 13.77 billion years. The far left depicts the earliest moment we can now probe, when a period of "inflation" produced a burst of exponential growth in the universe. (Size is depicted by the vertical extent of the grid in this graphic.) For the next several billion years, the expansion of the universe gradually slowed down as the matter in the universe pulled on itself via gravity. More recently, the expansion has begun to speed up again as the repulsive effects of dark energy have come to dominate the expansion of the universe." (NASA, Universe Expansion Funnel)


When people say that time stops in photons, they mean that a photon delivers as much energy as it gets. So the photon itself has no time. But a photon's time is bound with the universe. This means that the age of photons is connected with the universe’s existence. 

The thing is that in the young universe, energy levels and scattering effects were stronger than in the modern universe or the universe where we live. The speed of light is a cosmic constant that depends on the environment. The speed of light is higher outside the atmosphere than in water or gas. 

The distance of particles and energy level, which means the power of the radiation, determines the speed of light. And the photon's speed is always the top. Because the speed of light always increases because of the weaker quantum fields and growing distance between particles, that means the photon's speed accelerates. And then we must understand that the other particles' speed compared to the photon’s speed is the same as in the past. When the entirety’s speed rises, the speed between objects seems the same. 

When we think about claiming that the universe expands faster than light, we can say yes and no. The fact is that the speed of light in the modern universe is higher than in the young universe. So there is a possibility that in the modern universe particles can travel faster than photons traveled in the young universe. But still, those other particles’ speed is lower than the photon's speed. The expansion of the universe causes light to travel faster. But because all other particles also travel faster than that, it is hard to see. 

"An illustration (not to scale) of a primordial black hole growing to supermassive size. (Image credit: Robert Lea (created with Canva))" (Space, Tiny ‘primordial’ black holes created in the Big Bang may have rapidly grown to supermassive sizes)

The other point is that. When a photon travels out from the universe, its speed should increase. But then the gravity of the entire universe pulls the photon back. It's hard to determine how fast a photon travels outside the universe. When a photon travels outside the universe, that means the universe pulls a photon into it with its entire mass. If the photon is in the universe, there is less mass behind it than outside the universe. 

In the same way, when we are at the edge of planet Uranus’s atmosphere, the gravity seems very strong. But when we drop to the surface of the stone shell or lithosphere of that planet, we face a situation where gravity is weaker than on Earth. The same way the universe can act when something is outside it. 

 When a black hole is behind a photon, that thing pulls the photon back to it. The massive gravitational effect also pulls the wave movement longer. This means that there is a possibility that the universe would be quite hard to see outside. But that is only speculation. 

The oversized black holes can form from tiny primordial black holes in the young universe. In the young universe, those black holes were closer to each other. And that caused a situation in which they collide more often than in the modern universe. 

When we think about enormous black holes in the young universe, we must realize that those black holes formed in conditions where the energy level was higher than in the modern universe. That means energy, or quantum fields, press against a black hole more powerfully than in the modern universe. That allowed the black holes to grow to an enormous size. Those black holes could form in a whirl in the powerful radiation. And when the universe expands, maybe those black holes' event horizons grow.

When the quantum fields turn weaker, that means the black hole starts to send radiation. That radiation can cause gravitational waves. The expansion of the universe can be one of the reasons why black holes sometimes separate from their material disks. And that causes the gravitational wave bursts. The expansion of the universe causes energy to move throughout the universe. And that thing is one of the things that causes the effect called time.


https://www.cfa.harvard.edu/news/over-massive-black-hole-young-universe


https://www.iflscience.com/are-those-eerie-oversized-black-holes-in-the-early-universe-the-result-of-direct-collapse-74341


https://svs.gsfc.nasa.gov/12314


https://www.space.com/astronomy/black-holes/tiny-primordial-black-holes-created-in-the-big-bang-may-have-rapidly-grown-to-supermassive-sizes



Thursday, July 17, 2025

The dark forest theory.



Can aliens exist? Is it possible that aliens see us, but they don’t make contact? And why don't they want to contact us? The answer can be that, as we don’t know anything about aliens, they will not know anything about us. There is a possibility that the call signal in the universe is a trap. Just like if we walk in a dark forest and hear somebody calling. We cannot be sure if that call was just meant to make contact. Or, if it is a trap. If alien culture exists, that would not be the same as our culture. Even if we see a signal. We might not have the chance to break the message. Making contact with alien civilization is not like calling using cell phones. 

When we see a message come to our cell phones. We know immediately. That humans sent that message. And we know that it's the message. But if we see an alien message, the situation is more complicated. First, we must be sure that there is a message. First, the message is the radio signal that arrives at some radio telescope. That message will be one of the thousands or even millions. 

Or billions of radio signals that the telescope receives during that day. The system must separate those synthetic signals from the natural radio sources like pulsars, quasars, or fast radio bursts. Then we must try to find the code that opens the message. And then we must realize that we might not like that message. But when we think about detection and the separation process, their system filters messages from natural radio signals; there is a possibility that this system removes the synthetic signal. Because it thinks that it's from Earth. Or it thinks that the signal is the receiver's error. 

The base of the dark forest theory or hypothesis is that all civilizations are hostile. And they just wait for the right moment to attack. 

"The universe is a dark forest. Every civilization is an armed hunter stalking through the trees like a ghost, gently pushing aside branches that block the path and trying to tread without sound. Even breathing is done with care. The hunter has to be careful, because everywhere in the forest are stealthy hunters like him. If he finds another life—another hunter, angel, or a demon, a delicate infant to tottering old man, a fairy or demigod—there’s only one thing he can do: open fire and eliminate them." (Big Think, Dark Forest theory: A terrifying explanation of why we haven’t heard from aliens yet)

Then we must realize that if we make that thing, it certainly is the military action against those aliens. And if they are powerful and advanced, they might take revenge. Just this thing would be similar to things that started colonialism. Natives attacked Europeans because they established their irrigation on native lands. Because Europeans were hurt, they sent troops to take revenge. The military superiority gave Europeans the ability to conquer their colonies. In the same way. If we attack aliens, they might try to avenge us. 


Dark forest theory is one of the darkest theories that tries to explain why we aren't able to make contact with other civilizations. The model is taken from the dark forest where we travel alone. We can yell and call other people, but even if somebody answers, that doesn’t mean that the person who answers means good. The forests are full of animals and humans, but they are not always good-willed. 

We can think that there are cities full of kind people, but those people are kind because they are under observation. In the same way, we must realize that some people who live in forests are probably not as well under surveillance as we might think. The thing that makes people commit crimes is that they believe nobody sees their crimes. 

The thing in the dark forest model is that the space is the forest. The civilization that lives on a certain planet is the community that lives in cities. And those members of the hypothetical alien civilizations who live in their research centers and other outposts like colonies are members who live in dark forests. They might not have the ability to communicate with their home planets very often. And that means those colonies might start to live their own life. 

When we think about that hypothetical civilization and compare it with things like conquistadors and great voyages, we must realize that the first colonists returned home. But then those colonies turned more and more independent. The first voyagers returned home. Then they left for colonies forever. Those people never return. And that path made the colonies turn independent. 

And in space, the scale is far bigger than on the great sails and voyages. And then some of those colonies rise more powerful than the nation that created them. So, if we think that the alien colonies or colonies that the human race will someday establish are separating from the home planet. That means those colonies become alien to their establishments. They might turn more powerful than the planet that created them. 

The thing is that. As in a dark forest, in the universe. There are actors who wait for the right moment to find a helpless civilization or some other colony. Those creatures can attack and conquer the helpless planet anytime they see something that cannot resist. If we yell and try to make contact, we actually don’t know what we face. In the worst case, friendly discussion with aliens is meant as a trap. 

And we must not forget that. We don’t know if aliens will try to contact us in our lifetime. But we must realize that there is always the possibility that another species tries to conquer our planet. One of the reasons for that can be that those hypothetical aliens can think of us as competitors. Or maybe they are cosmic outlaws who want to set up an accident. The dark forest hypothesis means that aliens exist, but they don’t want to contact us. 


https://bigthink.com/surprising-science/the-dark-forest-theory-a-terrifying-explanation-of-why-we-havent-heard-from-aliens-yet/


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



Can Venus host lifeforms?


"An artist’s impression of the proposed VERVE mission to Venus the answer whether tiny bacterial lifeforms really do exist in the planet’s clouds. Credit: Danielle Futselaar" (ScitechDaily, Unexplained Gases on Venus: Could They Be the Sign of Alien Life?)

"Could microbial life be drifting in the clouds of Venus? With unexplained signs of phosphine and ammonia scientists are developing a bold new space mission to find out." ScitechDaily, Unexplained Gases on Venus: Could They Be the Sign of Alien Life?)




Phosphine in Venus' atmosphere still remains. Researchers found phosphine and ammonia in that planet’s atmosphere. That causes the possibility that there can be lifeforms on Venus’ clouds. That planet’s atmosphere is far different from Earth's. It’s mainly carbon dioxide and carbon monoxide. 

That means that the atmosphere is very flat. It turns denser differently from Earth. The density rises lower and faster than Earth's atmosphere. If there are some kind of lifeforms, that means there can be some kind of diatoms or other algae or bacteria that can hover. Using their oxygen bubbles. Carbon dioxide is heavier than nitrogen and oxygen. So, if we fill a bag using air, that bag rises to Venus’s atmosphere. 

In some SciFi novels, astronauts rise to their Venus platforms by filling the bags using air, and that bag raises them to the Venus highlands. That causes an idea that in some planet’s atmosphere could hover medusa-type lifeforms that can create oxygen in their cells. Then those “medusas” can hover in that planet’s atmosphere. Originally, astronomer Carl Sagan introduced the idea of “living balls” that could hide in Jupiter or Saturn’s atmospheres. 

So the high pressure of the Venus surface denies water boiling. And one of the models of lifeforms that can survive in extreme conditions is found near hydrothermal vents deep under the ocean surface. 

Supercritical water that doesn’t boil at extremely high temperatures keeps worms, bacteria, and shrimp alive near hydrothermal vents. Hydrothermal vents, called “black smokers,” maintain ecosystems at the depths of the oceans. 


"Black smoker in the Atlantic Ocean" (Wikipedia, Hydrothermal vent)

The reality is that there are always people who say that lifeforms on planets like Venus are impossible because of their temperature and pressure. Those arguments cause discussions because high pressure increases the water's boiling point. The high pressure causes a situation where there could be lifeforms near black smokers, or officially, hydrothermal vents. Water pressure near those hydrothermal vents that are over 3000 meters below the surface is enormous. That pressure forms supercritical water near those hydrothermal vents.

There are bacteria and some worms near those extremely hot points. Those bacteria, worms, and shrimps can stay alive because of the supercritical water. Because water doesn’t form bubbles, those organisms that require enzyme and protein synthesis in that environment can stay alive. If those same organisms rise to normal air pressure and to that temperature, they will die immediately. 

Because of the boiling water, maybe those things can give hints about the lifeforms that can survive on extreme planets. And then we must consider that those lifeforms are fully adapted to their environment, which can be deadly to us. We and no lifeform that lives on drylands can survive near hydrothermal vents. But those lifeforms cannot survive on Earth either. 


https://scitechdaily.com/unexplained-gases-on-venus-could-they-be-the-sign-of-alien-life/


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



Could there have been UFOs in Earth's orbit in the 1950s?

Aligned, Multiple-Transient Events in the First Palomar Sky Survey could be artificial objects. Or. They could also be some light reflection...