Reseachers found missing fermionic (or baryonic) matter.

 

"Caption:Simulated gas distribution (blue, green, and yellow colors) around galaxies (white dots on the image). The study finds that gas in our Universe extends farther from galaxies than most simulations predict, indicating strong activity from galaxies that have expelled gas away from galaxy groups.Credit: IllustrisTNG" (MIT News, Diffuse puffs of “missing” matter surround most galaxies)

Reseachers found missing fermionic (or baryonic) matter. And could that be the route to finding the source of dark energy?

Could the extremely cold material cloud outside the universe be the reason for the universe’s expansion? If there is an extremely cold material cloud in space. Its energy minimum is lower than that in the observable universe. That makes that matter invisible. That means that. The dark energy. That expands the universe. It could be the virtual effect. Caused by the hypothetical “universal Oort Cloud” of the fermionic material outside the visible universe. Here I write fermionic. The reason for that is that matter must not be in protons and neutrons. Those particles are baryons. And atoms are baryonic objects. But. Those hypothetical clouds. They can be free quarks or some other fermions like low-energy electrons. So here I use fermionic instead of baryonic.

"The spatial distribution of fast radio burst signal across the sky (above), compared against the galaxy distributions (below). The study has found a significant correlation between the two distributions, revealing missing baryonic matter in the Universe.Credit: Haochen Wang" (MIT News, Diffuse puffs of “missing” matter surround most galaxies)

Reseachers found missing fermionic matter in space between galaxies and galaxy clusters. This means this. There could be lots of matter in the universe. We cannot see it because we are in our solar system and galaxy. The temperature in our solar system is higher than outside the partially hypothetical Oort Cloud and the Kuiper belt. This makes it hard to detect weak IR objects outside the heliopause. The small dwarf planets and asteroids outside Pluto’s orbit are confirmed. 

Most of those objects are maybe metric or centimeter class. The diameter of the Oort Cloud is a mystery. But many times. When people talk about the Kuiper belt and Oort Cloud, they mean the same thing. The asteroid and dust cloud around the solar system. The size of that cloud is enormous. And that means that it causes scattering effects. That makes it hard to get an IR signature from objects that are behind it. The warmer objects cover those colder objects behind them. Even if the temperature difference between those objects is less than a degree. Energy travels to a lower-energy area. 

Kuiper belt and Oort Cloud. Could. This kind of structure? But on a larger scale. Surround the entire universe? If the ultimate large-scale version of matter cloud surrounds the universe. That thing could cause a gravitational effect that expands the universe. We could see this kind of material structure and its interaction as dark energy. If. Energy travels only to that cloud. That makes it invisible. If the energy level of reflection is lower. 

Same way. The temperature in our galaxy, along with brightness, is higher than outside it. This means that the Oort Cloud and matter in our galaxy extend beyond our galaxy. Matter in our galaxy and in our solar system shines brighter.  Than matter outside it. The reason for that is the scattering of light from our Sun and billions of other stars. We can compare this situation with cases where we drive a car in a snowstorm. When we turn on our headlights, we can see only the snow. The reason for that is reflection from the snowflakes. This means inside the universe and outside it. Could be a similar effect. 

Then the energy level in the universe is. There can be lots of matter that we cannot see, because it's so cold.  Here I mean fermionic matter. And the shine of other material covers it under its IR brightness. And of course. Dark matter is one of the mysteries. 

“The filament is made up of hot intergalactic gas (shown in mottled black-yellow), a type of ‘ordinary matter’ that has proven really difficult for astronomers to find.” (ESA)

There is a possibility that the temperature outside the universe could be below the energy minimum inside the universe. This means that energy moves out from the universe. And if there is no such high-energy reflection, it can travel back into the universe. That can cause a situation where we cannot see that matter. For sending. A reflection that can penetrate the universe. The reflecting particle. It must have such a high energy level. That the energy in that reflection. Is higher than the energy level in the universe. 

But reseachers found missing matter outside the galaxies. And outside the galaxy clusters. This means that high-energy reactions. They can throw matter out from the galaxy clusters. This causes. An idea.  That maybe there is lots of matter that is even harder to detect. But the Kuiper belt and Oort Cloud. They can be used as a base for conclusions. 

When the diameter of the galaxies is about 100 million light-years. The diameter. The missing material cloud is about 4-5 billion light-years. So could there be a large material cloud outside the visible universe? That material cloud of extremely low-energy matter could pull the universe outward. So, could that kind of material cloud explain dark energy as a virtual effect? The reason for the virtual effect could be extremely low-energy material outside the visible universe. 

https://www.esa.int/Science_Exploration/Space_Science/XMM-Newton/The_models_were_right_astronomers_find_missing_matter

https://www.livescience.com/space/astronomy/much-more-violent-than-predicted-a-chunk-of-the-universes-missing-matter-was-powerfully-hurled-out-of-galaxies

https://news.mit.edu/2026/missing-matter-diffuse-puffs-surround-most-galaxies-0721

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

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

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

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

Interesting details of mythical Planet 9.

“The Subaru Telescope has spotted a cosmic relic that could rewrite what we know about the early Solar System. Nicknamed 'Ammonite' but officially designated 2023 KQ14, this newly discovered space rock is now the fourth known sednoid, a rare class of distant, icy bodies with highly elongated orbits that dance around the outermost fringes of our cosmic neighbourhood. What makes Ammonite special? It’s not just its extreme orbit. It's a frozen relic from the dawn of the Solar System, offering clues about how our planets formed around the Sun, and whether a mysterious ninth planet still lurks in the darkness.” (BBC Sky at Night magazine,Ancient relic discovered on the edge of our Solar System could help solve the Planet Nine mystery)

Search for Planet 9 continues. Planet 9 is the name. For the mysterious gravitational effect. That affects the trajectory of the planet Neptune. The new observations about the trans-Neptunian objects, TNOs. Offer an alternative reason for those mysterious gravitational effects. The new trans-Neptunian object. Called 2017 OF201. is the candidate for a dwarf planet. And that object is interesting for searching for Planet X. The 2017 OF201 diameter. It is about 700 kilometers. 

Reseachers used that object’s trajectory. For searching for Planet 9. The 2017 OF201 tells. That there could be more massive objects in the Kuiper belt. And that means that. The alternative explanation for Planet X is the swarm of small objects in the Kuiper belt. A large number of dwarf planets can affect the large planet’s trajectories. But the problem is: could the mass of Kuiper belt objects be so high? Do they affect the trajectory of planet Neptune? 

The finding of the 2017 QF201 caused a new search. And the newest object in our solar system. It is the 2023 KQ14, nicknamed “Ammonite”. 

Or could the situation there, Alpha Centauri A and B, and Proxima Centauri, along with the Luhman 16 system, form the line? Could those systems, along with Kuiper belt objects, cause the situation in which Neptune’s trajectory wobbles? The latest found TNO. It is the 2023 KQ14. The Subaru telescope found the distant object in the Kuiper belt. And that means that. The large mass of the Kuiper belt might not be found. There can be objects that are waiting for their finders. Those two objects tell us. We don’t know the Kuiper belt yet. 

There is still a possibility. That. There is a cold planet outside the solar system. The mass of planet 9 would be larger than that of Earth. But the problem is that the most promising area for that very distant planet is very far away. For probes like New Horizons, it takes 118 years to reach that area. There is always a possibility that the probe travels to the wrong point. And that means it cannot find the unknown planet. 

“Artist's impression of Quaoar rings. Credit: Paris Observatory” (ScitechDaily, Space Mystery: Unexpected New Ring System Discovered in Our Own Solar System)

But there are also many alternative explanations for Planet 9. If we talk about the mysterious gravity effect. One of the most exciting versions is that. Planet 9 could be a primordial black hole. The small black hole that can lurk inside the icy shell. Reseachers suggest that.  In the universe. There can be small black holes. Those planet-mass black holes. They can lurk inside the structures. That seems like a planet. The size of those theoretical objects can be smaller than a coin. They could create an ice shell around them. If Planet 9 is a primordial black hole. 

That thing. It can be very small and massive. So, if that hypothetical primordial black hole exists. The object called Quaoar is one of the strongest candidates for that thing. The dwarf planet Quaoar has a ring system and moons. The gravity on that object is extremely weak. Or it should be so weak. That the moon and the ring system should not exist. The size. Of. Quaoar is so small. It cannot create a magnetic field. Because Quaoar should not have a melted core. 

There is, of course. A possibility that some kind of gas. Or water can stay liquid. In that extremely low. gravitation and temperature. That thing can carry magnetic particles around the core of that small world. This means that there could be stranger objects than water moons. The water moon means the moons like Jupiter’s Europa. There are low gravity and tidal forces. That keeps those oceans liquid. In that case, water plays the same role as magma basalt. Plays on Earth. So, could there be objects? That are. Similar to the Europa moon? But those objects formed of methane or carbon dioxide ice? The water is replaced by some gas. 

This explains the rings of Quaoar. But things like its satellite Weywot, and another possible. But not a confirmed satellite. They are harder to explain. By using plasma whirls as an explanation. Some people think that Weywot is too far from Quaoar to be its stable companion. But otherwise, conditions in the outer solar system are very stable. 

“Weywot is about 116–172 km (72–107 mi) in diameter and orbits Quaoar every 12.4 days at an average distance of 13,300 km (8,300 mi). Weywot is thought to play a role in maintaining Quaoar's outer ring by gravitationally influencing it in an orbital resonance.” (Wikipedia, Weywot). 

If those rings are locked in Quaoar’s plasma rings. The Quaoar must have a magnetic field. So the magnetic field can form in the interaction. There, weak gravity packs plasma around Quaoar. Then that plasma starts to whirl around the dwarf planet. And that acts as a plasma generator. Another version is that there is something very heavy in that small object. The primordial black hole. It is an interesting theorem. And maybe someday we could see what causes the gravitational effect. In the planet Neptune's trajectory?

https://www.astronomy.com/science/is-planet-nine-a-black-hole-or-a-planet-harvard-scientists-suggest-a-way-to-find-out/

https://scitechdaily.com/is-planet-nine-real-new-discovery-at-the-edge-of-the-solar-system-adds-a-twist/

https://scitechdaily.com/space-mystery-unexpected-new-ring-system-discovered-in-our-own-solar-system/

https://www.skyatnightmagazine.com/news/ammonite-2023-kq14

https://en.wikipedia.org/wiki/2017_OF201

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

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

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

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

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

Organic molecules don’t mean life. And mysterious methane and rings in the Kuiper Belt.

Organic molecules don’t mean life. And mysterious methane and rings in the Kuiper Belt. 

“An artist’s impression of plumes erupting onto the surface of Enceladus. Its fellow moon Titan is seen in the sky, and the distant Sun beyond. Credit: ESA/Science Office”

Saturn’s moon Enceladus has long dazzled scientists with its icy plumes that spew water and mysterious organic molecules into space, fueling hopes of a habitable ocean beneath. But new experiments suggest the story may be more complicated.”

“Researchers found that radiation bombarding Enceladus’s frozen surface could be producing many of the same organics detected in the plumes — meaning they might not come from the hidden ocean at all. This twist forces scientists to rethink how we interpret signs of habitability on icy moons.” (The Shocking Twist in the Search for Life on Saturn’s Icy Moon)

“Electron microscopy revealed chain structures resembling living organisms in meteorite fragment ALH84001” (Wikipedia, Allan Hills 84001). If those remnants are bacteria, they can be from Earth. There is a possibility that those bacteria. If they are bacteria. that came from Antarctic ice, and they traveled to the meteorite. Because its heat “called” those bacteria. Anyway, that meteorite is polluted. The temperature in Antarctica is not so low that it could keep that meteorite sterile. 

“An image of the rock named “Cheyava Falls” in the “Bright Angel formation” in Jezero crater, Mars collected by the WATSON camera onboard the Mars 2020 Perseverance rover. The image shows a rust-colored, organic matter bearing sedimentary mudstone sandwiched between bright white layers of another composition. The small dark blue/green to black colored nodules and ring-shaped reaction fronts that have dark rims, and bleached interiors are proposed to be potential biosignatures. Credit: NASA/JPL-Caltech/MSSS” (ScitechDaily, Strange Mars Mudstones May Hold the Strongest Clues Yet of Ancient Life)

“NASA’s Perseverance rover has uncovered mysterious mudstones in Mars’ Jezero Crater that contain organic carbon and strange mineral textures.” (ScitechDaily, Strange Mars Mudstones May Hold the Strongest Clues Yet of Ancient Life)

“These features, possibly shaped by redox reactions similar to those fueled by microbes on Earth, may represent potential biosignatures.” (ScitechDaily, Strange Mars Mudstones May Hold the Strongest Clues Yet of Ancient Life)

Confirmed life in our solar system is limited to planet Earth. All other harbors for life are hypothetical. It’s possible that there have been some kind of lifeforms on Mars, but before there is any laboratory analysis about samples brought from Mars, nothing is more uncertain than uncertain. NASA says that there is “strong evidence” that some primitive lifeforms, like prokaryotic bacteria, could have lived on Mars a long time ago. 

Confirmation about that thing can be very difficult. If there have been some bacteria on Mars, the thin atmosphere that lets UV-radiation reach the Mars surface can destroy all genetic material. From those bacteria.  Those remnants would be hollows in stones. Without DNA or RNA, it is impossible to confirm that some form is from bacteria. 

There are strange forms in some meteorites, but the problem is that those meteorites, including Allan Hills 84001 from Antarctica, are polluted. That means those primitive bacterial fossils, if they are bacterial fossils, can be from Earth. There have also been organic materials in Saturn's Enceladus moons' icy geysers. There is a possibility that these organic materials are formed due to sunlight. 

Maybe Saturn will pull ions to Enceladus, and that can cause the formation of those organic compounds. But as we know, there is a possibility that there can be lifeforms in that icy world. Otherwise, Organic molecules can form. Because of some kind of chemical reactions that have no biological origin. 

“An SwRI-led team used Webb telescope observations (white) to detect methane gas on the distant dwarf planet Makemake. Sharp emission peaks near 3.3 microns reveal methane in the gas phase above Makemake’s surface. A continuum model (cyan) is overlaid for comparison; the gas emission peaks are identified where the observed spectrum rises above the continuum. An artistic rendering of Makemake’s surface is shown in the background. Credit: Courtesy of S. Protopapa, I. Wong/SwRI/STScI/NASA/ESA/CSA” (ScitechDaily, Webb Telescope Detects Gas on Distant Dwarf Planet Makemake for the First Time)

Telescopes noticed gas on the dwarf planet Makemake. 

The surprise was that the gas JWST detected is methane. That means there are some chemical reactions on those distant worlds. Those dwarf planets like Makemake are so far away that they cannot get methane from places like Titan. And that is one of the most interesting things in the universe. There is a possibility that weak energy from the distant sun, along with some ions, can have so much energy that. It can push carbon and hydrogen together in a very low-energy but stable environment. 

 Makemake is far away from Earth in the Kuiper Belt. That dwarf planet is one of the coldest places in our solar system. That’s why existing gas is a surprise. But conditions in the Kuiper Belt are incredibly stable. Makemake can pull gases from space around it. And that thing makes it possible that those dwarf planets have a thin atmosphere. Those objects called trans-Neptunian objects TNOs are so far away from the sun that the solar wind has no force to blow those atmospheres away. And that’s why some dwarf planets like Makemake can have atmospheres. 

“Artist's impression of Quaoar with its ring and its moon Weywot” (Wikipedia, Quaoar)

“Quaoar compared to the Earth and the Moon” (Wikipedia, Quaoar)

Researchers noticed that the dwarf planet Quaoar may have another moon or some unknown ring system. Quaoar has a ring system and one known moon. That is an incredible thing, because that dwarf planet is very small. The ring system can form around that dwarf planet when its moon acts like Saturn’s and other gas planets’ rings. Shepherd moons that trap particles between them. 

The problem is that the shepherd moons are always on both sides of their ring. There is a possibility that Quaoar’s moon Weywot and its gravity can trap those particles between Quaoar and Weywot, but is that moon’s and Quaoar’s gravity so strong that they can trap those particles? 

But those rings are in the place where those planets’ Van Allen belts are. Shepherd moons from holes between rings. But the plasma ring. Around those gas giants is the thing that traps most of those particles. That means Quaoar must, or should have, some kind of magnetic field. 

That dwarf planet is mysterious. It's too small for internal nuclear reactions to form those plasma rings. Its moon seems very far away from that dwarf planet. And that is one of the most interesting things about that distant and mysterious object. 

https://phys.org/news/2025-09-discovery-moon-orbiting-mysterious-distant.html

https://scitechdaily.com/the-shocking-twist-in-the-search-for-life-on-saturns-icy-moon/

https://scitechdaily.com/space-mystery-unexpected-new-ring-system-discovered-in-our-own-solar-system/

https://scitechdaily.com/strange-mars-mudstones-may-hold-the-strongest-clues-yet-of-ancient-life/

https://scitechdaily.com/webb-telescope-detects-gas-on-distant-dwarf-planet-makemake-for-the-first-time/

https://en.wikipedia.org/wiki/Allan_Hills_84001

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

A new mysterious object has been discovered at the edge of the solar system.

 A new mysterious object has been discovered at the edge of the solar system. 

“A composite image showing the five dwarf planets recognized by the International Astronomical Union, plus the newly discovered trans-Neptunian object 2017 OF201. Credit: NASA/JPL-Caltech; image of 2017 OF201: Sihao Cheng et al.” (ScitechDaily, Astronomers Discover Mysterious New World at Edge of the Solar System

The JWST telescope discovered a mysterious object, designated 2017 OF201, at the edge of the solar system. That object is one of the so-called trans-Neptunian objects, TNOs. That opens new paths to discover new planets and dwarf planets in our solar system. The 2017 OF201 is the dwarf planets. These are introduced in the image. Above this text. 

Most of those dwarf planets are found in the Kuiper Belt, and only Ceres is in the asteroid belt. That means there can be many dwarf planets hiding in the Kuiper Belt. And that is one of the most interesting questions about dwarf planets. Why are there no dwarf planets in the inner solar system? The dwarf planets are interesting because some of them might have formed as moons of planets. And maybe. Some dwarf planets have been part of larger planets. Those were destroyed in cosmic collisions. 

Most of those dwarf planets are in the Kuiper Belt. That raises the idea that maybe some of those small objects are from other solar systems. Maybe some of those small worlds have been some kind of rogue worlds that slipped away from some red dwarf system, or maybe some nova or supernova threw some of those dwarf planets out of their orbits. Or maybe those things were Uranus’s or Neptune’s moons that some cosmic catastrophe threw out from their orbit. 

The gravity effect that comes from some planets, or some kind of particle beam. Or asteroid impacts can cause an effect. Those small moons that are at a long distance from their planet just go out of their trajectories. The interesting detail in those dwarf planets is that Haumea. Which looks like an egg. It is larger than the ball-shaped Ceres. The shape of Haumea tells. that it has been fast-spinning when it formed. The fast spinning movement stretched that dwarf planet, or there must be some internal effect, like some kind of beam. that stretched that dwarf planet into shape as we see it. 

https://scitechdaily.com/astronomers-discover-mysterious-new-world-at-edge-of-the-solar-system/

Uranus’ new moon and suspicion of Planet Y.

   Uranus’ new moon and suspicion of Planet Y. 

“James Webb has revealed Uranus’ smallest moon yet, a six-mile-wide world hidden near its inner rings. This discovery pushes the planet’s moon count to 29 and shows how Webb can uncover secrets Voyager 2 never saw. Credit: NASA, ESA, CSA, STScI, M. El Moutamid (SwRI), M. Hedman (University of Idaho)” (ScitechDaily, Uranus Has a Tiny New Moon and It’s Only Six Miles Wide)

JWST found a new moon called S/2025 U 1 near Uranus. Did the Uranus planet capture its tiny, newfound moon after the Voyager 2 flyby in 1986? The width of that moon is about 6 miles. And it is hidden in Uranus' inner rings. 

Researchers noticed the new moon that orbits Uranus. That tiny moon is interesting. Because Earth-based instruments found it. That new Uranus moon is not a very big object.  But it's remarkable, and the interesting thing. But I think that researchers should have found that moon before. So, could that small moon have made a transit movement to orbit the Uranus planet in the near past? That means something pulled that moon out from the Kuiper Belt.

In this hypothesis, that is the new moon for that gas giant. Something in the Kuiper Belt pushed that thing out from its trajectory. That new moon called S/2025 U 1 is the new moon for the Uranus moon family. And that tiny moon, which is only six miles wide, orbits near that planet. The Voyager spacecraft should have found that tiny moon during its flyby in 1986. So that supports the model that Uranus captured that moon after the Voyager flyby.

“A new SwRI-led JWST survey discovered S/2025 U 1 (approximate location indicated in yellow), a tiny moon orbiting Uranus between the satellites Bianca and Ophelia. If it has an albedo comparable to other nearby moons, this object is probably around six miles in diameter, by far the smallest moon in the Uranus system to date. The solid ellipses indicate rings, while the dotted lines show the orbits of many of the inner moons. Credit: Public Domain” (SwRI), M. Hedman (University of Idaho)” (ScitechDaily, Uranus Has a Tiny New Moon and It’s Only Six Miles Wide)

Forget planet X, there might be a planet Y in the Kuiper Belt. 

Above: Why is there no dust on the white snow area on Pluto? That tells us that the white snow area is born recently. Or something pulls particles out from that. 

Some people believe that there is a planet X, or the ninth planet, somewhere, outside Pluto’s orbit. Planet 9 is a very well-known theory. There is a suggestion that Planet 9 is about three to seven times as massive as Earth. And that orbits the sun at the edge of the solar system’s gravitational pool. There can be something smaller, an Earth-size icy world hiding in the Kuiper Belt. Or outside it. Planet Y is not such a well-known theory. Than the Planet 9. 

The white area on Pluto’s surface can be a cryovolcano or a result of the recent cryovolcanism-type seismic effect. That thing can form because of the Charon-moon gravity. But there is another possibility. Something far stronger than the gravity effect can cause tidal waves that activate the cryovolcanism. The thing. What makes that white area interesting is that. There seems to be no dust in that area. That means it formed quite recently. Pluto is far lighter than Earth. And that means Charon’s tidal forces are far stronger on that dwarf planet’s surface than they would be on Earth. 

"Three years after NASA's New Horizons spacecraft gave humankind our first close-up views of Pluto and its largest moon, Charon, scientists are still revealing the wonders of these incredible worlds in the outer solar system. Marking the anniversary of New Horizons' historic flight through the Pluto system on July 14, 2015, mission scientists released the highest-resolution color images of Pluto and Charon. These natural-color images result from refined calibration of data gathered by New Horizons' color Multispectral Visible Imaging Camera (MVIC). (Wikipedia, Charon)

The processing creates images that would approximate the colors that the human eye would perceive, bringing them closer to “true color” than the images released near the encounter. This image was taken on July 14, 2015, from a range of 46,091 miles (74,176 kilometers). This single color MVIC scan includes no data from other New Horizons imagers or instruments added. The striking features on Charon are clearly visible, including the reddish north-polar region known as Mordor Macula." (Wikipedia, Charon)

Pluto has five known moons, and that makes the new Uranus moon very interesting. But could those moons common gravity effect be strong enough? To hover those particles out from Pluto's surface? Charon itself is grey, and it can be covered by cosmic dust. But was that moon once in the middle of the cosmic dust flow? And why do those particles not reach Pluto?

The problem is: why is there no visible cryovolcanism or cyoseismic effect in the images? Which New Horizons tool during its flyby? If that cryovolcanic effect happened only once. That would cause interesting thoughts. 

Researchers are finding tips that the large, maybe, Earth-mass planet can hide in the Kuiper Belt. That planet can be more interesting than Planet 9. Planet Y can give some answers to the Early solar system formation. But researchers need more evidence. To confirm the existence of this icy Earth. Maybe the Vera Rubin Observatory can give an answer for that question.  The researchers can use the accumulation of the dust and gas around hiding objects that could hide at the edge of the solar system. 

The problem is that those objects are very cold. And if they used their internal thermal source, those big planets can turn invisible to the IR sensors. But their gravitational effect can disturb their moons. Big and heavy objects capture smaller objects around them. And maybe the tidal forces can form the cyovolcanism in those small objects. The Kuiper Belt is a very stable environment. If there are big planets, their trajectories can be so far away from the Sun and other planets that they can escape from our solar system. 

https://dailygalaxy.com/2025/08/planet-y-haunting-space-beyond-neptune/

https://www.earth.com/news/planet-y-signs-of-a-world-hiding-in-our-solar-system/

https://www.newscientist.com/article/2493480-there-might-be-a-planet-y-hiding-in-the-outer-solar-system/

https://scitechdaily.com/uranus-has-a-tiny-new-moon-and-its-only-six-miles-wide/

https://en.wikipedia.org/wiki/Charon_(moon)

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

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