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For decades, Nibiru existed only as a controversial theory, dismissed by most scientists and embraced by mystery enthusiasts around the world. But a newly detected object far beyond the known planets has reignited speculation that a massive hidden world may be moving through the outer reaches of our Solar System. Could this finally be the evidence believers have been waiting for, or is there another explanation for the mysterious object heading in our direction?
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00:05A massive hidden planet may be moving somewhere beyond Neptune right now.
00:11Scientists still haven't seen it directly, but multiple studies suggest something enormous is affecting the outer solar system through gravity
00:19alone.
00:20And immediately, one ancient name started spreading online again, Nibiru.
00:27According to one of the most controversial theories on the internet, Nibiru is a hidden planet connected to the mysterious
00:35Anunnaki,
00:36powerful beings described in ancient Sumerian texts thousands of years ago.
00:42Some people believe this object periodically enters the inner solar system,
00:47and that ancient civilizations may have known about it long before modern astronomy existed.
00:52Normally, theories like this would be ignored completely.
00:57But the problem is that astronomers really are searching for an undiscovered planet right now.
01:04The story starts far beyond Pluto, in the outer edges of the solar system.
01:09Over the last several years, scientists noticed something strange about the orbits of distant icy objects beyond Neptune.
01:19Instead of moving randomly, several objects appeared clustered together in ways that suggested the gravity of a much larger unseen
01:28body might be affecting them.
01:30This eventually led researchers to propose the existence of a possible hidden world known as Planet Nine.
01:37Some estimates suggest this object, if it exists, could be between five and ten times more massive than Earth and
01:45orbit hundreds of times farther from the Sun than our planet does.
01:49At that distance, it would reflect almost no sunlight, making direct detection extremely difficult even for modern telescopes.
01:58And that is exactly why the Nibiru theory exploded again online.
02:04Because according to older alternative theories, ancient civilizations already knew about a hidden planet long before scientists started discussing Planet
02:14Nine.
02:14The civilization most often connected to this mystery is the Sumerians.
02:20More than 5000 years ago, the Sumerians built one of the earliest advanced civilizations in human history in Mesopotamia.
02:29They developed writing, mathematics, astronomy, large cities, and detailed mythological systems.
02:37Within many of their ancient stories appear references to powerful beings called the Anunnaki.
02:44Mainstream historians interpret the Anunnaki as mythological deities connected to creation stories, kingship, and religion.
02:53But alternative interpretations claim these beings came from the sky and were associated with a wandering planet called Nibiru.
03:02According to the theory, the Anunnaki periodically traveled between Earth and this hidden world.
03:08The idea became especially popular because of certain ancient carvings and symbols.
03:14Some Sumerian artwork appears to show celestial patterns, unusual objects, and star imagery that internet theories often describe as evidence
03:24of advanced astronomical knowledge.
03:26One of the most famous examples involves the so-called Sumerian bags, strange hand-held objects carved into stone reliefs
03:35thousands of years ago.
03:37Similar shapes also appear in unrelated ancient cultures, which only made the mystery grow online.
03:45Supporters of the Nibiru theory claim these symbols represent lost knowledge connected to the Anunnaki.
03:52The most extreme versions of the story go even further.
03:56Some claim the Anunnaki genetically altered early humans, helped build early civilizations, or left encoded astronomical information hidden inside myths
04:07and ancient texts.
04:09There is no scientific evidence supporting those claims.
04:13But what makes the theory difficult to completely dismiss online is the strange overlap between ancient mythology and modern astronomy.
04:22Because scientists really are searching for a large unseen object in the outer solar system.
04:29And every time new research about Planet Nine appears, the internet immediately reconnects it to Nibiru.
04:37At the same time, astronomers continue finding unusual objects beyond Neptune.
04:44Some dwarf planets and icy bodies follow orbits that still do not have perfect explanations.
04:50Researchers believe a hidden planet remains one possible answer.
04:56Powerful observatories are currently scanning deep space, searching for faint movement patterns that could finally reveal whether Planet Nine exists.
05:06So far, nothing matching the dramatic descriptions of Nibiru has ever been confirmed.
05:12No giant rogue planet is heading toward Earth.
05:16No evidence of extraterrestrial visitors has been discovered in ancient Mesopotamia.
05:22But the theory refuses to disappear for one reason.
05:26An ancient civilization described powerful beings descending from the heavens.
05:31Modern astronomers believe another massive world may still be hidden somewhere in the darkness beyond Neptune.
05:38And for millions of people online, those two stories became connected in a way that is now impossible to separate.
05:49Look at this giant donut-shaped region far away from Earth, beyond the orbit of Neptune.
05:55We're talking about a distance of more than 2.5 billion miles.
05:59It's the Kuiper belt.
06:00And something eerie and bizarre is happening there.
06:05Dwarf planets and other small objects dwelling there refuse to cluster together.
06:10Instead, they follow particular orbits, which is weird.
06:14The reason might be a large, mysterious planet hiding beyond Pluto.
06:19Its gravity might be messing up the orbits of those Kuiper space bodies.
06:26Hear me out.
06:27Our solar system is made up of the Sun and everything that goes around it because of the star's strong
06:33gravity.
06:34This includes the eight main planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
06:43There are also smaller things like moons, asteroids, and Pluto.
06:47For a long time, people thought Pluto was the ninth planet.
06:51But when it was reclassified as a dwarf planet, scientists started looking for a new planet X.
06:58Did they have a thing about odd numbers or what?
07:01And guess what?
07:02Some really think there might be a big, icy planet hiding far, far away beyond Neptune.
07:09This mystery planet is often called Planet Nine.
07:14Now, Planet Nine hasn't been seen yet, but scientists think it might be out there because of some tiny, far
07:21away space rocks called etnos that move following bizarre, confusing paths.
07:27These paths seem to be grouped together and tilted in a way that doesn't happen by chance.
07:32This could mean there's a hidden planet pulling them into place with its gravity.
07:37If Planet Nine is real, it might be five to ten times heavier than Earth.
07:42It would also be super far away, hundreds of times farther from the Sun than Earth is.
07:48Over the years, scientists have guessed different distances for its orbit.
07:52And the newest guess in 2025 says it could be about 290 times farther from the Sun than Earth.
08:00There are some cool ideas about where Planet Nine came from.
08:04It might have started as a big planet that Jupiter once kicked out of the inner solar system.
08:09Or it might have come from another star or even wandered around space on its own before getting caught by
08:16the Sun's gravity.
08:18Even though scientists have looked really hard using powerful telescopes, no one has actually seen Planet Nine yet.
08:25And so far, its existence is still just a theory.
08:29But recently, a group of researchers tried something clever.
08:33However, they used data from two special space surveys called ERAS and AKARI.
08:39These two looked at the sky in invisible light, far infrared, about 23 years apart.
08:46Which is helpful because Planet Nine is supposed to move very slowly.
08:51The team focused on a special list from AKARI, which is better at finding faint, moving things in space.
08:58They guessed how bright Planet Nine might be and how fast it might move based on how big, far away
09:05and cold it could be.
09:08Then they looked for matching blips in the sky that were seen by both ERAS and AKARI.
09:13But not in the exact same spot.
09:16That's because a real planet would have moved a little over 23 years.
09:20And they indeed found 13 possible matches that could be Planet Nine.
09:25Their estimations were based on how far away the object seemed to be.
09:30500 to 700 times farther from the Sun than Earth.
09:34And how heavy it might be, which is 7 to 17 times Earth's mass.
09:40After looking very carefully at all the images, they narrowed it down to one really good candidate.
09:46The two detections weren't in the same spot in both surveys.
09:50And the way they appeared in the AKARI map matched what you'd expect from a slow-moving object.
09:56It showed up on one date and wasn't there six months earlier.
10:00But of course, there was a catch.
10:03Apparently, the old data isn't good enough to figure out the exact path of the potential planet.
10:08So, the team wants to do new follow-up observations using a special camera called DCAM.
10:15Which is really good at spotting faint, moving objects.
10:19That way, they can find out if this candidate is really Planet Nine.
10:24Additionally, it can help us learn more about how our solar system works and how it formed.
10:30If Planet Nine is ever discovered, it would totally change the way we understand our solar system.
10:36It could explain why some far-out space rocks in the Kuiper Belt tilt weirdly.
10:41The thing is, most planets go around the Sun in a flat-ish circle.
10:46But those far-away objects are tilted about 20 degrees.
10:50Planet Nine might be the reason why.
10:53Next, we'd probably find out why those tilted objects seem to point the same way.
10:58Their orbits are grouped together in one direction.
11:01A big, hidden planet's gravity could be hurting them like sheep.
11:07There are also some strange tilted objects super far away.
11:11They don't make sense unless something big, like Planet Nine, is tugging on them.
11:15A few space rocks orbit the Sun backward between the big planets, which is kinda the wrong way.
11:22That's super weird unless something big is messing with them.
11:25Some far-out Kuiper Belt objects keep crossing Neptune's path and haven't been flung away.
11:32That's because Planet Nine might be helping keep their orbits stable over a long time.
11:39Another cool thing is that if Planet Nine existed, it would be a super-Earth.
11:44A kind of planet we see a lot around other stars, but we don't have in our solar system yet.
11:51So finding one here would make our solar system more like the others out there.
11:57Throughout history, people have been wondering if there could be hidden planets far beyond Neptune, even before Pluto was found.
12:07Back in 1880, a guy named George Forbes guessed there might be two unknown planets way out there.
12:14One about 100 times farther from the Sun than Earth, and the other about 300 times farther.
12:21He thought these mystery planets might be pulling on some comets and changing their orbits.
12:27Kind of like how Jupiter does with the comets near it.
12:31In 2004, scientists found a weird little world called Sedna.
12:36It had a strange path around the Sun that didn't seem to be affected by any of the known planets.
12:42Its closest point to the Sun, called Perihelion, is way too far for Neptune to be the reason.
12:48This made some scientists wonder if Sedna got pushed into its path by a hidden planet, maybe even something as
12:56big as Earth or bigger.
12:58Others thought maybe it was a star that flew by a long time ago, or another star that formed near
13:04ours.
13:06Then, in 2014, another odd object was discovered.
13:10It had a very similar orbit to Sedna, which made people even more suspicious that there could be something big
13:17out there messing with their paths.
13:20This kicked off a new round of the Planet X or Planet 9 hunt.
13:25At a meeting in 2012, a scientist named Rodney Gomez said that maybe there was a big, hidden planet around
13:321500 times farther from the Sun than Earth.
13:36He thought it could explain the orbits of other odd objects, like some far-out comets and centaurs, small bodies
13:43that wander among the giant planets.
13:45At that time, those who supported the Planet 9 theory believed that if it existed, it would move around the
13:52Sun in a huge, stretched-out circle, called an elliptical orbit.
13:56It would be about 400 to 800 times farther from the Sun than Earth is, about 13 to 26 times
14:04farther than Neptune.
14:06If it really had that kind of orbit, it would take around 10,000 to 20,000 years to go
14:11around the Sun just once.
14:13Plus, if it indeed orbited the Sun, it wouldn't follow the same flat path as the other planets.
14:20Its path would be tilted by about 15 degrees to 25 degrees.
14:24The farthest point in its orbit, called Aphelion, would be in the direction of the Taurus constellation.
14:31As for the closest point, it would point towards Serpens, Ophiuchus, or Libra.
14:37As for the composition of Planet 9, it would probably be a lot like Uranus or Neptune.
14:42It would have a thick atmosphere made of hydrogen and helium, and it would be super cold, negative 375 degrees
14:49Fahrenheit.
14:51Its core would be made of iron, and its middle layer would be full of rock and water ice.
14:56At the same time, if the planet was smaller and denser, then it might be more like Earth, with a
15:02rocky surface instead of a gassy one.
15:05According to a scientist named Mike Brown, if Planet 9 was real, a space probe would reach it in about
15:1220 years if we used a powerful slingshot path around the Sun.
15:19Now, if Earth were the size of a nickel, Neptune would be about as big as a baseball.
15:25That's impressive, but it's nothing compared to the giant ninth planet that might be hiding out there.
15:30Now, our Planet 9's discovery saga might have finally come to an end.
15:35Turns out, the problem wasn't where we were looking, but how.
15:39And researchers might have just made the biggest solar system discovery in decades.
15:45You see, the idea of finding a planet beyond Neptune has been around for years now.
15:50I know, back in school, you probably learned that the ninth planet was Pluto.
15:54But forget about Pluto, it's been demoted to a less fancy category since 2006.
15:59What I'm talking about is the Planet 9, a hypothetical giant planet that could be our cosmic neighbor.
16:07We've never actually seen it, but scientists are pretty sure it's out there somewhere, hiding in the outer solar system.
16:15To explain why they think that, we need a sheet of paper.
16:18Hey, here's one.
16:19We place a coin on it, and suddenly, it starts to move.
16:23Unless we're talking about some kind of superpower, there's no way this coin is moving on its own, right?
16:29So, you figure, someone must be on the other side, holding a magnet and moving it around.
16:35You can't see the magnet, but it explains why the coin is moving.
16:39That's kind of what's happening with Planet 9.
16:42We can't see it, we can't prove it, yet.
16:44But its existence could explain the strange movements we see out there in space.
16:50For example, the planets in our solar system orbit on a flat plane that's tilted about 6 degrees relative to
16:57the Sun.
16:58But why 6 degrees?
17:00Well, no one really knows for sure.
17:02Some scientists think those orbits might be slightly tilted because of the pull of a ninth planet.
17:07Its existence could also explain the unusual paths of smaller objects in the distant Kuiper Belt,
17:14a region full of icy debris that stretches far beyond Neptune's orbit.
17:19Back in 2016, researchers from Caltech published a study about Planet 9.
17:25They suggested it could have a mass about 10 times that of Earth and follow a highly elongated path.
17:32It's a scientific way of saying it takes forever to make one trip around the Sun.
17:37Because of that, it would be located in the outer solar system.
17:40I mean, far, far away.
17:42It would orbit the Sun about 20 to 30 times farther out than our most distant planet, Neptune.
17:48According to scientists, Planet 9 would take up to 20,000 Earth years to complete just one full orbit around
17:55the Sun.
17:56Since it's crazy far out there, it's almost impossible to see it.
18:00So, as cool as this hypothesis sounds, we've never found solid evidence that Planet 9 actually exists.
18:07But we might be pretty close.
18:10In May 2025, a team at National Tsinghua University might have made one of the most exciting solar system discoveries
18:18ever.
18:19Alright, so there's a hypothesis that Planet 9 hasn't been discovered yet because we haven't been using the right method.
18:26This new study raises an interesting question.
18:30What if Planet 9 actually looks brighter in infrared light than it does in visible light?
18:35Let me explain.
18:36Scientists have been trying to spot Planet 9 by its reflected light.
18:40But here's the problem.
18:42The spotted invisible wavelengths, sunlight would have to travel all the way out to Planet 9, bounce off its surface,
18:49and then travel all the way back to Earth.
18:52If a Neptune-sized planet were about 10 times farther away than Neptune, it would look about 10,000 times
18:58fainter.
18:58But a planet's own thermal radiation – I mean, its heat – only has to make a one-way trip.
19:05So, in infrared light, Planet 9 would only be about 100 times fainter.
19:10That's why it makes more sense to look for it using space-based infrared telescopes.
19:15And that's the idea behind this new study.
19:17The team started digging through archives, searching for old infrared sky survey data.
19:23And they pulled it from two main sources.
19:25First, IRIS, a satellite launched in the 80s that scanned the sky for almost a year.
19:31Then, the Japanese satellite Akari, another infrared observatory that operated between 2006 and 2011.
19:39So, basically, they compared objects that showed up in IRIS database and noticed which ones had moved by the time
19:46Akari took its observations.
19:48And by doing that, the researchers found something incredible.
19:52An object that might just be our long-lost ninth planet.
19:56Because if something moves, it could be a planet orbiting the Sun, right?
20:01And yeah, they did find some celestial objects showing tiny movements.
20:05But before jumping to conclusions, they had to rule out the parallax effect.
20:10And that's something really important when we're talking about solar system discoveries.
20:14To explain it, I need you to do something.
20:17Hold one finger in front of your face, close one eye, and now switch.
20:22Your finger seems to move a tiny bit, right?
20:24That's because you're looking at it from a slightly different angle, from one eyeball to the other.
20:30The same thing happens when we look out into space from Earth.
20:33Since our planet orbits the Sun, our view of very distant objects shifts just a little.
20:40That effect is called parallax.
20:42My point is, because of this effect, Planet 9 would appear to move across the sky as Earth goes around
20:48the Sun.
20:49On any given day, it might seem to be in one spot.
20:52But six months later, when Earth is on the opposite side of the Sun, it would look like it shifted.
20:58Six months after that, it would seem to move back again.
21:02Scientists had to account for parallax.
21:04Actually, they had to remove its effects.
21:07So the team looked at images of the sky taken on the same date every year.
21:12Because on that same date, Earth is always in the same spot in its orbit.
21:16That means if Planet 9 is real, it would show up in the same place in those images every year.
21:22No fake wiggle from parallax, just its real position.
21:26This careful search led them to a single object, a tiny dot in the infrared data.
21:33This strange little spot had moved slightly along its orbit around the Sun over the 23 years between Iris and
21:40Ikari.
21:40Wait, could that be it?
21:43Did astronomers just confirm a hidden planet?
21:45Well, maybe.
21:47But don't get too excited.
21:49The data we have on its motion over that time is not enough to figure out its full orbit.
21:55So, for now, we still can't say for sure if this mysterious object is really Planet 9.
22:01It's definitely a strong candidate, though.
22:03Based on how bright the object appears, the team estimates it could be pretty massive.
22:09And that came as a big surprise.
22:12You see, previous NASA research ruled out any Jupiter-sized or Saturn-sized planets hiding out there.
22:18But a smaller world would have gone undetected.
22:21So, the scientists were looking for something just a bit bigger than Earth.
22:25But it turns out, this mysterious planet might be more massive than Neptune.
22:29Now that they've discovered Planet 9, supposedly, at least, the plan is to keep tracking it and collecting new data.
22:37But don't think the road ahead will be easy.
22:40Because since the Ikari satellite spotted it for the first time, that object didn't just sit still.
22:46It's been moving slowly through space ever since.
22:49So now, scientists need to use regular telescopes on Earth to look for it again.
22:53And here's the tricky part.
22:55They're not exactly sure where it moved to.
22:58So they have to search a pretty big patch of the sky.
23:01And so far, no matching object has been found.
23:05Whether this really turns out to be the Planet 9 discovery or not, only time will tell.
23:10For now, its existence is still up for debate.
23:13But with powerful new technology on the way, like NASA's Nancy Grace Roman Space Telescope,
23:19astronomers are more determined than ever to uncover the truth.
23:22And if Planet 9 really is out there, hiding in the cold, dark edges of our solar system,
23:29it's running out of places to hide.
23:32So, we might be getting closer to finding a massive icy planet beyond Neptune's orbit.
23:38Sorry, Pluto, still not you.
23:40Recently, some universe mapping using data from a telescope in Hawaii eliminated about 78% of the possible locations for
23:49this mysterious Waldo from space.
23:51Some people call it Planet 9, while others prefer Planet X.
23:56Either way, it's been causing controversy since its existence was first proposed.
24:01And that is mainly because no study so far can answer the big question.
24:06Does it really exist?
24:08If discovered, Planet 9 would rank as the fifth-largest planet in our solar system, with a mass ten times
24:15that of Earth.
24:15It's also theorized to be gaseous, like Uranus.
24:20The initial study on Planet 9, dating back to 2016, suggests that this colossal new planet orbits the Sun 29
24:28times farther out than Neptune, which sits at about 2.8 billion miles.
24:33As a result, the planet 9 would take between 10,000 and 20,000 years to complete a single orbit
24:40around the Sun.
24:41If confirmed, this yet-to-be-understood world would dominate a region larger than any other known planet in our
24:48cosmic neighborhood.
24:50These are all intriguing hypotheses, but without a single piece of evidence or observation to back them up.
24:57Before dismissing this as a wild guess, it is important to note that these researchers relied on complex mathematical modeling
25:06and computer simulations to speculate about the planet's characteristics.
25:10Because that's what they do.
25:11The hypothetical presence of this planet would explain various mysterious features located beyond Neptune.
25:19We are specifically talking about the Kuiper Belt, a huge donut-shaped region filled with icy debris left over from
25:27the formation of the solar system, including comets and dwarf planets like Pluto.
25:31What happens is that the six farthest objects in the Kuiper Belt exhibit elliptical orbits that are all oriented in
25:39a similar direction within physical space and tilted approximately 30 degrees downward relative to the orbital plane of our eight
25:47known planets.
25:48What's strange here is that, despite their distinct orbital velocities around the solar system, they maintain this alignment.
25:55The likelihood of such alignment occurring randomly is extremely low, around 0.007%.
26:03So, here comes Planet Nine, a hypothetical massive celestial body that offers a plausible explanation for this strange phenomenon, potentially
26:13exerting gravitational influence to shape these orbits.
26:18The initial theory didn't hold up for long, facing accusations of observational bias and calculation errors.
26:25Then, in 2017, another study popped up, sparking back the idea that maybe Planet Nine is out there after all.
26:34This time, Spanish astronomers tried a novel approach, focusing on observing extreme trans-Neptunian objects.
26:42These celestial bodies orbit the Sun in highly-stretched elliptical paths, with average distances exceeding 13 billion miles.
26:50The research suggests that the distances between these objects' nodes and the Sun might provide clues to Planet Nine's location.
26:59You see, these nodes are the points where a celestial body's orbit intersects the solar system's plane.
27:05When these objects reach these points, they're more likely to interact with other solar system bodies, potentially causing significant changes
27:13in their orbits or even collisions.
27:15So, if the trajectory of these extreme trans-Neptunian objects remains stable, everything's fine.
27:22But if it's not, well, that's a sign that something else, something big, is messing with their path.
27:29And that's exactly what the research found.
27:32There is something unseen out there, throwing these objects off course.
27:36And that something could be a planet, chilling at a distance between 300 to 400 times farther from the Sun
27:44than Earth.
27:45To this day, the study of the extreme trans-Neptunian objects is the strongest evidence we've got for Planet Nine's
27:52existence.
27:53And if you're still not convinced by this theory, know that strange motions like these have led to planetary discoveries
28:00before.
28:00Neptune, for instance, was spotted because Uranus' motion didn't quite agree with the predictions of Newtonian gravity.
28:08But the deflection of its orbit could be explained if it was caused by a pull of an undiscovered planet.
28:15And just like that, we discovered Neptune.
28:20Now, the year is 2021, and there's all this buzz about Planet Nine again.
28:25After correcting some old guesses, studies are now leaning towards the idea that this mystery world follows an epic loop
28:33around the Sun every 7,000 years.
28:36That is massive news, because it means this planet might be closer than we ever thought, making it easier for
28:42our telescopes to spot it.
28:44The paper also suggests there is a whopping 99% chance that the funky orbits of these distant objects are
28:52all because of this unseen planet, not just some cosmic coincidence.
28:56Now, the odds of this whole situation being a fluke are down to a 1 in 250 chance, which is
29:03much better than the 1 in 10,000 chance back in 2016.
29:08All these optimistic numbers have brought us to where we are today, keeping our hopes and working on better equipment
29:15to continue the mission of spotting Planet Nine.
29:18As mentioned earlier, researchers in Hawaii created some kind of treasure map, utilizing the Panoramic Survey Telescope and Rapid Response
29:27System to eliminate 78% of its locations.
29:31This is great news, considering how challenging it is to find a planet-sized needle in a cosmic haystack.
29:38But, unfortunately, Planet Nine's presence remains a ghost in the dark outer reaches of our solar system.
29:45Enthusiasts are still convinced of its existence and believe it is only a matter of time before we celebrate the
29:52discovery of Earth's new cosmic cousin.
29:54They're putting their hopes on the Vera C. Rubin Observatory, which is currently under construction in Chile and is scheduled
30:01to begin science operations in late 2025.
30:05Over the course of 10 years, this observatory will scan the entire southern hemisphere sky every few nights with a
30:1227-foot, fast-moving telescope equipped with the largest digital camera in the world.
30:18The idea is to catalogue everything in the solar system, reaching out to and beyond Neptune, and tracking the movements
30:25of millions of celestial objects, including space junk, asteroids, comets, and stars.
30:31If Planet Nine is indeed out there, this next-generation telescope could be the one to find it.
30:39The existence of this mysterious planet is far from being universally accepted in the scientific community.
30:46That is simply because Planet Nine isn't the only explanation for the strange phenomenon occurring beyond Neptune.
30:53One theory suggests that a group of distant objects, such as dwarf planets, comets, and moons, might be collectively influencing
31:01the orbits of the extreme trans-Neptunian objects.
31:04Others believe that a black hole is behind all this.
31:08These compressed masses are some of the densest objects in the universe, potentially capable of affecting the orbits of other
31:15masses, like how this supposed ghost Planet Nine is believed to be doing.
31:21Another bold perspective suggests that our current understanding of the laws of gravity is flawed, actually incomplete.
31:28This theory, known as modified Newtonian dynamics, proposes that these distant icy objects exhibit strange behavior, not due to influence
31:39from another planet, but rather because the immense gravitational field of the Milky Way is influencing them.
31:45However, even supporters of this theory acknowledge that it is too early to draw firm conclusions, and much more extensive
31:53research is still required.
31:57While we continue our relentless hunt for Planet Nine, some astronomers have taken it a step further, suggesting the existence
32:04of a hypothetical Planet Ten.
32:07This world has a mass and size like that of Mars or Earth, and is located on the edges of
32:13the Kuiper belt.
32:13But the thing is, if this alleged Planet Ten is indeed as small as scientists believe, it might not have
32:21enough gravity to clear its orbit of debris.
32:23And that is pretty similar to what happens with Pluto, being one of the reasons why it got into trouble
32:29back in 2006.
32:30So yeah, it's better not to get too excited.
32:34This supposed Planet Ten might end up classified as another dwarf planet.
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