Astronomy and Planetary Science Thread

[Flyaway]

An Extreme Cousin for Pluto? Possible Dwarf Planet Discovered at Solar System’s Edge

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study’s School of Natural Sciences, has discovered an extraordinary trans-Neptunian object (TNO), named 2017 OF201, at the edge of our solar system.

The TNO is potentially large enough to qualify as a dwarf planet, the same category as the much more well-known Pluto. The new object is one of the most distant visible objects in our solar system and, significantly, suggests that the empty section of space thought to exist beyond Neptune in the Kuiper Belt is not, in fact, empty at all.

…

“The object’s aphelion—the farthest point on the orbit from the Sun—is more than 1600 times that of the Earth’s orbit,” explains Cheng. “Meanwhile, its perihelion—the closest point on its orbit to the Sun—is 44.5 times that of the Earth’s orbit, similar to Pluto's orbit.”

…

“Many extreme TNOs have orbits that appear to cluster in specific orientations, but 2017 OF201 deviates from this,” says Li. This clustering has been interpreted as indirect evidence for the existence of another planet in the solar system, Planet X or Planet Nine, which could be gravitationally shepherding these objects into their observed patterns. The existence of 2017 OF201 as an outlier to such clustering could potentially challenge this hypothesis.

Cheng and his colleagues estimate 2017 OF201’s diameter to be 700 km, which would make it the second largest known object in such a wide orbit. The diameter of Pluto, meanwhile, is 2,377 km. Further observations, potentially using radio telescopes, are needed to determine the object's exact size.

…

“2017 OF201 spends only 1% of its orbital time close enough to us to be detectable. The presence of this single object suggests that there could be another hundred or so other objects with similar orbit and size; they are just too far away to be detectable now,” Cheng states. “Even though advances in telescopes have enabled us to explore distant parts of the universe, there is still a great deal to discover about our own solar system.”

An Extreme Cousin for Pluto? Possible Dwarf Planet Discovered at Solar System’s Edge

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study’s School of Natural Sciences, has discovered an extraordinary trans-Neptunian object (TNO), named 2017 OF201, at the edge of our solar system.

www.ias.edu

Related paper:

Discovery of a dwarf planet candidate in an extremely wide orbit: 2017 OF201

We report the discovery of a dwarf planet candidate, 2017 OF201, currently located at a distance of 90.5 au. Its orbit is extremely wide and extends to the inner Oort cloud, with a semi-major axis of 838 au and a perihelion of 44.9 au precisely determined from 19 observations over seven years...

arxiv.org

 

[Justo Miranda]

TRAPPIST-1 Planets Could Be Swimming in Water, Study Shows

TRAPPIST-1 Planets Could Be Swimming in Water, Study Shows

A seven-planet system some 40 light-years from Earth could be swimming in water, new research shows.

www.sciencealert.com

Related paper:

Statistical geochemical constraints on present-day water outgassing as a source of secondary atmospheres on the TRAPPIST-1 exoplanets

The TRAPPIST-1 planetary system is observationally favorable for studying if planets orbiting M stars can retain atmospheres and host habitable conditions. Recent JWST secondary eclipse observations of TRAPPIST-1 c rule out a thick \ch{CO2} atmosphere but do not rule out atmospheric water vapor...

arxiv.org

The last theory I read about these planets stated that they would probably have lost rotation due to their proximity to the star and were supposed to have a hot and icy sides.

It was also assumed that this type of red stars emits frequent flares that prevent the appearance of life on planetary surfaces.

 

[NMaude]

The last theory I read about these planets stated that they would probably have lost rotation due to their proximity to the star

They haven't lost their rotation, what has happened is that their rotation is tidally locked so their rotation rate matches their orbital period around the star they orbit.

 

[Justo Miranda]

They haven't lost their rotation, what has happened is that their rotation is tidally locked so their rotation rate matches their orbital period around the star they orbit.

Sorry for the bad translation, that's the same thing I meant. In my language the definition is “acoplamiento de marea” tidal coupling.

 

[Flyaway]

New Information on the Search for Planet Nine and a Candidate!

View: https://youtu.be/Dpk2kqOHXCg?si=3hxrTOQE5is52Q59

This planet especially if it is another ice giant seems a lot more likely than Brown’s mythical planet nine. It would be rather ironic if we found a planet nine but it was absolutely nothing to do with his proposed planet.

 

[NMaude]

There's a new study that suggests that Dyson Swarms may not be physically possible, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about the idea of Dyson swarms and why they seem to be impossible
Links:
https://arxiv.org/abs/2504.21151https://www.youtube.com/redirect?ev...ttps://arxiv.org/abs/2504.21151&v=y763RKqJE9g
https://articles.adsabs.harvard.edu/p...https://www.youtube.com/redirect?ev...ard.edu/pdf/1964SvA.....8..217K&v=y763RKqJE9g
https://snaoz.astro.ucla.edu/NEKL.htmlhttps://www.youtube.com/redirect?ev.../snaoz.astro.ucla.edu/NEKL.html&v=y763RKqJE9g
Other videos:
https://www.youtube.com/watch?v=Fb9sWuV34fI
• Dyson Swarm in the Solar System Would Make...
https://www.youtube.com/watch?v=g60RWxlUF0s
• New Way to Detect Dyson Spheres and Other ...

• Astronomers Just Looked at Those Dyson Sph...

• We Found Another Dimming Object More Myste... https://www.youtube.com/watch?v=dFnrsim8V90
#dysonsphere #aliens #megastructure

0:00 Dyson spheres and the Kardashev scale
2:00 How Dyson swarm would work
3:00 Previous discoveries of bizarre stars
3:45 New study - can they really exist though?
4:55 Orbital issues and the 3 body problem
6:20 Self-correcting swarm
7:10 Kozai mechanism
8:58 Star type also causes issues - Yarkovsky effect
10:00 Star shape
10:35 Solar weather
11:00 Time limit
11:50 Conclusions

 

[Flyaway]

Scientists find rare double-star system where one star orbited inside the other

Astronomers may have discovered a rare type of binary star system, where one star used to orbit inside its partner.

In the new study, astronomers investigated a pulsar known as PSR J1928+1815 located about 455 light-years from Earth.

Scientists find rare double-star system where one star orbited inside the other

Only 16 to 84 other examples of this exotic system may exist in our entire galaxy.

www.space.com

Related paper:

https://www.science.org/doi/10.1126/science.ado0769

The rarest black holes in the universe may be 'wandering' our galaxy — but scientists don't know how to detect them

Dozens of 'wandering' black holes could be tumbling through our galaxy right now, new simulations hint. Their existence could help solve a longstanding cosmic puzzle.

The rarest black holes in the universe may be 'wandering' our galaxy — but scientists don't know how to detect them

Dozens of 'wandering' black holes could be tumbling through our galaxy right now, new simulations hint. Their existence could help solve a longstanding cosmic puzzle.

www.livescience.com

Related paper:

Wandering intermediate-mass black holes in Milky Way-mass galaxies in cosmological simulations: myth or reality?

In this work, we address the following question: ``can we use the current cosmological simulations to identify intermediate-mass black holes (IMBHs) and quantify a putative population of wandering IMBHs?''. We compare wandering-IMBH counts in different simulations with different sub-grid methods...

arxiv.org

 

[NMaude]

Something strange about the most distant "Galaxy" discovered by the JWST, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about the new record holding galaxy MOM-z14 that seems to be the farthest and oldest seen yet. But is it a galaxy though?
Links:
https://arxiv.org/abs/2505.11263https://www.youtube.com/redirect?ev...ttps://arxiv.org/abs/2505.11263&v=XxeFWmM85GU
Other videos:
https://www.youtube.com/watch?v=rKoWyBA9Xx8
• Most Distant Galaxy Ever Seen Is Filled Wi...

• JWST Finds Something Unusual Inside GN-z11...

• So What Are These Strange Little Red Dots ... https://www.youtube.com/watch?v=V2G5IR9gAqI
#jwst #jameswebbspacetelescope #galaxy

0:00 New record!
1:10 How this was found
2:40 Comparing to other distant galaxies
3:20 Is this a problem with cosmology?
5:20 What exactly do we see here?
7:30 Things that are difficult to explain
10:20 Different types of galaxies at these distance
11:20 Conclusions

 

[NMaude]

An interesting video from Anton Petrov suggesting a link between the extinction of the Neanderthals and a brief magnetic pole reversion some 41,000 years ago:

Hello and welcome! My name is Anton and in this video, we will talk about the event from 41000 years ago and the extinction of neanderthals
Links:
https://www.science.org/doi/10.1126/s...https://www.youtube.com/redirect?ev....org/doi/10.1126/sciadv.adq7275&v=XFHduHvxU2M
https://www.science.org/doi/10.1126/s...https://www.youtube.com/redirect?ev...%2540AdobeOrg%7CTS%3D1681312089&v=XFHduHvxU2M
https://www.pnas.org/doi/full/10.1073...https://www.youtube.com/redirect?ev...oi/full/10.1073/pnas.2021495118&v=XFHduHvxU2M
https://www.sciencedirect.com/science...https://www.youtube.com/redirect?ev...ii/S0278416516300757?via%3Dihub&v=XFHduHvxU2M

0:00 Laschamp excursion 41000 years ago
1:30 Neanderthals and humans
2:35 New study expands on these assumptions
3:40 Aurora effects and modeling in the study
6:00 Human evolution - clothes and sewing
7:10 Ochre pigment and sunscreen
8:30 So what does this mean?
8:50 Criticisms 10:00 Conclusions

Previous video:
https://www.youtube.com/watch?v=gZBXrOjr47w
• Major Discoveries About Earth's Magnetosph...

• Magnetic Cataclysm 42000 Years Ago May Hav... https://www.youtube.com/watch?v=Q7ty80YCOis
#neanderthal #earth #extinction

 

[NMaude]

It turns out that the Chixculub impact event 66 million years ago very quickly acidified Earth's oceans, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about new discovery that suggests that the asteroid that was responsible for dinosaur extinction probably causes a major acidification of oceans similar to what we're doing now.

Edit: I just realised this video is five years old back when Anton Petrov's channel was called "What da Math".

 

[NMaude]

A new video about the Parker Solar-probe:

The Parker Solar Probe is a NASA spacecraft designed to study the Sun’s outer atmosphere, or corona, by flying closer to the Sun than any previous mission. It survives the extreme heat using a cutting-edge Thermal Protection System designed to face temperatures that would melt most metals on Earth.
The probe follows a highly elliptical orbit, using Venus flybys to gradually shrink its path closer to the Sun. This groundbreaking mission helps scientists better understand solar wind, space weather, and the Sun’s magnetic fields, offering insights crucial for protecting satellites and astronauts.

 

[Flyaway]

Close Binary Stars Can Have "Supersaturated" Magnetic Fields, But We Don't Know How This Works

Close Binary Stars Can Have "Supersaturated" Magnetic Fields, But We Don't Know How This Works

Something about two stars in a tight orbit causes fields far more powerful than either would have on their own.

www.iflscience.com

Related paper:

Enhanced magnetic activity in rapidly rotating binary stars - Nature Astronomy

Binary stars with orbital periods of less than a day show magnetic activity beyond the saturation limit of single stars. This enhanced activity is probably driven by a large-scale α–ω dynamo during common-envelope evolution.

www.nature.com

 

[NMaude]

Close Binary Stars Can Have "Supersaturated" Magnetic Fields, But We Don't Know How This Works

Close Binary Stars Can Have "Supersaturated" Magnetic Fields, But We Don't Know How This Works

Something about two stars in a tight orbit causes fields far more powerful than either would have on their own.

www.iflscience.com

Related paper:

Enhanced magnetic activity in rapidly rotating binary stars - Nature Astronomy

Binary stars with orbital periods of less than a day show magnetic activity beyond the saturation limit of single stars. This enhanced activity is probably driven by a large-scale α–ω dynamo during common-envelope evolution.

www.nature.com

I wonder if this would mean supercharged solar-flares from these stars? If so that would make it problematic for life on any terrestrial worlds in their habitable zones.

 

[NMaude]

It would appear that the first wandering supermassive blackhole has been detected, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about the first ever wandering supermassive black hole
Links:
https://arxiv.org/pdf/2502.17661https://www.youtube.com/redirect?ev...ttps://arxiv.org/pdf/2502.17661&v=ZqT1Fpa6gWo
https://science.nasa.gov/missions/hub...https://www.youtube.com/redirect?ev...nts-roaming-massive-black-hole/&v=ZqT1Fpa6gWo
https://academic.oup.com/mnras/articl...https://www.youtube.com/redirect?ev.../503/4/6098/6189716?login=false&v=ZqT1Fpa6gWo
https://www.nature.com/articles/190205a0https://www.youtube.com/redirect?ev...ww.nature.com/articles/190205a0&v=ZqT1Fpa6gWo
#smbh #supermassiveblackholes #physicshttps://www.youtube.com/hashtag/physics

0:00 TDE - Tidal Disruption Event from an extreme region
0:50 Predictions in regards to wandering supermassive black holes
2:30 Observations of TDEs and how we find them
3:30 Recent unusual event and some other mysteries
5:00 Confirmation of the first wandering massive black hole
6:00 Potential explanations
6:55 What this means for astronomy and what's next?

 

[FighterJock]

Fingers crossed that the Solar System does not come across one of those wondering Black Holes it would not look good.

 

[Flyaway]

Titan's mysterious wobbling atmosphere is like a gyroscope, new research suggests

The puzzling behavior of Titan's atmosphere has been revealed by researchers at the University of Bristol for the first time. By analyzing data from the Cassini-Huygens mission, a joint venture between NASA, the European Space Agency (ESA), and the Italian Space Agency, the team have shown that the thick, hazy atmosphere of Saturn's largest moon doesn't spin in line with its surface, but instead wobbles like a gyroscope, shifting with the seasons.

…

This discovery will impact NASA's upcoming Dragonfly mission, a drone-like rotorcraft scheduled to arrive at Titan in the 2030s. As Dragonfly descends through the atmosphere, it will be carried by Titan's fast-moving winds—winds that are about 20 times faster than the rotation of the surface.

Understanding how the atmosphere wobbles with the seasons is crucial for calculating the landing trajectory of Dragonfly. The tilt affects how the payload will be carried through the air, so this research can help engineers better predict where it will touch down.

https://phys.org/news/2025-05-titan-mysterious-atmosphere-gyroscope.html

Related paper:

Radware Bot Manager Captcha

 

[Flyaway]

The 60-Year Mystery of Earth’s Vanishing Ghost Moons:

View: https://youtu.be/AmUNJw9Fhmo?si=5gKR1S22XjmlYQV1

 

[publiusr]

The Vorlons keep having to run off the Pakleds

 

[Flyaway]

Cosmic mystery deepens as astronomers find object flashing in both radio waves and X-rays

Astronomers from the International Centre for Radio Astronomy Research (ICRAR) have made a discovery of a new cosmic phenomenon: ASKAP J1832-0911. This object emits pulses of radio waves and X-rays for two minutes every 44 minutes, marking the first detection of long-period transients (LPTs) in X-rays. This finding promises to shed light on similar mysterious signals observed in the Universe.

Cosmic mystery deepens as astronomers find object flashing in both radio waves and X-rays

Cosmic mystery deepens as astronomers find object flashing in both radio waves and X-rays Astronomers from the International Centre for Radio Astronomy Research (ICRAR) have made a discovery of a new cosmic phenomenon: ASKAP J1832-0911. This object emits pulses of radio waves and X-rays for

www.scimex.org

Related paper:

Detection of X-ray emission from a bright long-period radio transient - Nature

A long-period radio transient with coincident radio and X-ray emission and observational properties unlike any known Galactic object has been observed by the Australian Square Kilometre Array Pathfinder.

www.nature.com

 

[NMaude]

Well it looks like a new discovery has nixed the Planet Nine hypothesis, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about the newly discovered dwarf planet 2017 OF201 and the Planet Nine hypothesis
Links:
https://arxiv.org/abs/2505.15806https://www.youtube.com/redirect?ev...ttps://arxiv.org/abs/2505.15806&v=-Y8uFwm677k
Other videos about Planet Nine:
https://www.youtube.com/watch?v=oijladyAV6s
• Evidence of a Strange New Object In the So...

• New Strong Evidence for Existence of Plane...

• Evidence of a Strange New Object In the So...
https://www.youtube.com/watch?v=oijladyAV6s&pp=0gcJCR0AztywvtLA
#planetnine #planet9 #dwarfplanet

0:00 New dwarf planet - 2017 OF201
0:50 How first dwarf planets were found
1:45 Planet nine hypothesis
3:45 First issues with new observations
5:50 Orbit and properties of the new object
7:00 How this was found and why it matters
8:10 Why Planet Nine probably doesn't exist
9:00 So what are these weird orbits?
9:50 Conclusions and what now?

 

[Flyaway]

JWST’s 3 BIG mysteries of the early universe:

View: https://youtu.be/Qu15C28QW8c?si=sZSAGibJdx6TUavZ

 

[NMaude]

Anton Petrov has put out a video concerning recent new findings concerning Jupiter including its formation:

Hello and welcome! My name is Anton and in this video, we will talk about the study about ancient Jupiter
Links:
https://www.astro.umd.edu/~hamilton/r...https://www.youtube.com/redirect?ev...earch/preprints/BurSimSho03.pdf&v=gl2EsJWEZEg
https://iopscience.iop.org/article/10...
#jupiter #solarsystem #astronomy

0:00 Jupiter was much larger before
0:37 Jupiter's aurora and how they differ from Earth
2:35 How Jupiter's moons possibly formed
3:45 Jupiter was much bigger
5:00 How this was discovered - orbital deviations of moons
6:30 Moons with eccentricity and inclination
7:30 So what happened here billions of years ago?
8:30 Io's influence
9:30 Exact spin and size
10:05 Conclusions and what this means
11:20 Additional questions

 

[Flyaway]

It seems many of these asteroids may be difficult to see from Earth even with something like the Vera C Rubin observatory.

However, they may have to expand their search since astronomers are now finding asteroids co-orbiting Venus that could pose a threat.

New research tries to understand how many more may co-orbit Venus and how we can detect them. They can be hidden in the Sun's glare and resist our efforts to find them. It comes down to observability windows and how the asteroids' brightness changes.

…

The Vera Rubin Observatory should detect many asteroids during its regular survey operations. However, finding potentially dangerous asteroids co-orbiting with Venus might take a special effort.

"While surveys like those from the Rubin Observatory may be able to detect some of these asteroids in the near future, we believe that only a dedicated observational campaign from a space-based mission near Venus could potentially map and discover all the still "invisible" PHA among Venus' co-orbital asteroids," the researchers conclude.

Is Venus Hiding Dangerous Asteroids?

Twenty years ago, the US Congress instructed NASA to find 90% of near-Earth asteroids threatening Earth. They've made progress finding these asteroids that orbit the Sun and come to within 1.3 astronomical units of Earth. However, they may have to expand their search since astronomers are now...

www.universetoday.com

Related paper:

The invisible threat: assessing the collisional hazard posed by the undiscovered Venus co-orbital asteroids

Currently, 20 co-orbital asteroids of Venus are known, with only one with an eccentricity below 0.38. This is most likely caused by observational biases since asteroids with larger eccentricities may approach the Earth and are easier to detect. We aim to assess the possible threat that the yet...

arxiv.org

 

[NMaude]

An unusual family of stars has been discovered by the Gaia space-telescope, from Anton Petrov:

Hello and welcome! My name is Anton and in this video, we will talk about a strange family of stars discovered by Gaia Telescope
Links:
https://iopscience.iop.org/article/10...https://www.youtube.com/redirect?ev...rticle/10.3847/1538-4357/adc2fa&v=JGY-btjvscc
Additional videos:
https://www.youtube.com/watch?v=xYHoIHt0O-Q
• Dark Cloud of Gas Found Close to the Solar...

• Local Bubble Contains Unexplained Structur...

• Gaia Mission Is Over, But the Discoveries ...
https://www.youtube.com/watch?v=C16J9mhRxyE
#astronomy #gaia #starshttps://www.youtube.com/hashtag/stars

0:00 Strange Gaia telescope discovery
2:00 Main discoveries of ancient structures
3:30 What was done in the recent study
5:20 Why this discovery is so strange
6:40 Explanations
7:20 Why only here?
8:28 Conclusions and what's next?

 

[Flyaway]

Cool Worlds - The Dark Forest Hypothesis Is Completely Wrong - Here’s Why:

View: https://youtu.be/X0SvgT9Lc2M?si=iS28_rnrA8w0eSSk

 

[Flyaway]

Time to start praying to that Sun god again!!!

https://twitter.com/x/status/1928878957593506299

View: https://twitter.com/NWSSWPC/status/1928878957593506299

This is the CME we are await - courtesy of jhelioviewer. The bulk center of CME is likely to be just north of Earth. But, we expect to be in enough of the arriving CME shock and magnetic cloud that G3-G4 levels are likely should the magnetic field be favorable 1-2 Jun.

https://twitter.com/x/status/1928916493682753600

View: https://twitter.com/NWSSWPC/status/1928916493682753600

UPGRADE! G4 (Severe) Watch now in effect for 1 -2 June

 

[FighterJock]

It will be interesting to see what happens to the CME hits Earth? Will we see an Aurora storm like the one that struck Earth back at the start of the year? And I do not want a Carington style event on the scale that hit Canada back in the late 1800s that wiped out the energy supplies, fingers and toes firmly crossed that it does not happen think of all the things that could go wrong if that were ever to occur in the modern age.

 

[UpForce]

Time to start praying to that Sun god again!!!

Or just chat, whatever.

I am the avatar of a sun, a star. All things come from me. You are elements of the sun. As I make you, I am able to destroy you. As I destroy you, I am able to create. Awareness is where we travel. No path, I am all gravity, and we exist in all universes and those in-between. What destroys you in this universe will deliver you to the next.

View: https://youtu.be/KLgYT6neOkk

 

[dannydale]

It will be interesting to see what happens to the CME hits Earth? Will we see an Aurora storm like the one that struck Earth back at the start of the year? And I do not want a Carington style event on the scale that hit Canada back in the late 1800s that wiped out the energy supplies, fingers and toes firmly crossed that it does not happen think of all the things that could go wrong if that were ever to occur in the modern age.

You can watch it on solarham.com.

 

[FighterJock]

Thanks for that dannydale, got it bookmarked.

 

[publiusr]

Time to start praying to that Sun god again!!!

View: https://twitter.com/NWSSWPC/status/1928878957593506299

That looks familiar:

Tech: Plasma Torpedo

Plasma Torpedo Prerequisites: Torpedo Weaponry Theory, Plasma Energy Research Cost: Pending DescriptionThe Plasma Torpedo weapon is an extremely powerful torpedo of high-energy plasma. The Plasma torpedo uses a basic guidance system and is a self-tracking ball of superheated Plasma. Upon impact...

fotku.fandom.com

Run!

 

[Flyaway]

For decades, astronomers believed that one thing was as certain as death and taxes: the Milky Way and our neighboring Andromeda galaxy were on a crash course… destined to collide in less than 5 billion years.

That galactic smash-up would spark massive star formation, scatter stars like cosmic billiard balls, and possibly throw our Sun into a whole new orbit.

But now… that future may not be so certain.

View: https://youtu.be/o2x_31dE04s?si=aFSU_TbvNsLAc_-t

 

[Flyaway]

Scientists have solved one of the solar system's enduring mysteries with the help of an unexpected source: a planetarium show.

Last year, experts at the American Museum of Natural History were preparing “Encounters in the Milky Way," a deep dive into our home galaxy shaped by the movements of stars and other celestial objects.

While fine-tuning a scene featuring what's known as the Oort Cloud, a region far beyond Pluto filled with icy relics from the solar system's formation, scientists noticed something unusual projected onto the planetarium's dome.

The Oort Cloud is known to send comets hurtling towards Earth, but its true shape has remained elusive to scientists until now.

Scientists solve solar system mystery after freak accident at planetarium show

The Oort Cloud’s true shape has remained elusive to scientists until now

www.independent.co.uk

 

[publiusr]

Scientists solve solar system mystery after freak accident at planetarium show

The Oort Cloud’s true shape has remained elusive to scientists until now

www.independent.co.uk

Art has its place....happy accidents... little winks from the universe... epiphanies cannot be planned nor scheduled.

 

[Brett Davidson]

Art has its place....happy accidents... little winks from the universe... epiphanies cannot be planned nor scheduled.

Fascinating. Here's the preprint:

A Spiral Structure in the Inner Oort Cloud

As the Galactic tide acts to decouple bodies from the scattered disk it creates a spiral structure in physical space that is roughly 15,000 au in length. The spiral is long-lived and persists in the inner Oort cloud to the present time. Here we discuss dynamics underlying the Oort spiral and...

arxiv.org

 

[NMaude]

Another relatively detailed short documentary concerning Jupiter:

What School Didn’t Teach You About Jupiter… But Should Have
They taught you Jupiter is big. But they never told you how big, or how powerful. They didn’t tell you that it’s so massive, it doesn’t orbit the Sun like the rest of the planets. It pulls the Sun.
They didn’t mention its invisible magnetic field that stretches over 7 million kilometers. Or that it hosts storms that have raged since before modern civilization. They left out the part where Jupiter might be the reason life even exists on Earth today.
This video changes that.
In this 20-minute deep dive, we’ll uncover the secrets of a planet often reduced to a gas giant footnote in science class, yet it holds mysteries and power unlike anything else in the solar system.
You’ll learn why Jupiter is more than just a planet, it’s a cosmic force of nature. A failed star. A destroyer and protector. And perhaps, our silent savior.

What You’ll Discover in This Video:

• Why Jupiter is so massive it shifts the position of the Sun
• How its gravitational pull affects other planets
• The mystery of the Great Red Spot
• Jupiter’s deadly magnetic field
• Why it almost became a star
• The moons that may harbor alien life
• Its faint rings and metallic hydrogen interior
• How Jupiter protects Earth from cosmic impacts⏱

CHAPTERS
00:00 - The Jupiter They Never Taught You About
01:18 - Where Jupiter Lives & Why It Matters
03:10 - Jupiter’s Mass vs. The Sun
05:03 - Big, But Not Dense
06:42 - Jupiter’s Solar Influence
08:25 - Visibility from Earth
09:12 - The Colors of Chaos
10:45 - The Great Red Spot
12:15 - Other Massive Storms
13:35 - What’s Inside Jupiter
15:03 - Why It’s Not a Star
16:12 - The Hidden Rings
17:10 - Magnetic Field and Radiation
18:24 - Moons With Life Potential
19:33 - How Jupiter Protects Earth
20:20 - Final Reflection

#StormsOnJupiter #WhyJupiterMatters #JupiterGravity #ProtectivePlanets#GasGiantExplained #DeepSpaceMissions #JupiterRotation #HiddenRings#SpaceMysteries #ScienceExplained

 

[Flyaway]

What if the Big Bang wasn’t the beginning? Our research suggests it may have taken place inside a black hole

The Big Bang is often described as the explosive birth of the universe – a singular moment when space, time and matter sprang into existence. But what if this was not the beginning at all? What if our universe emerged from something else – something more familiar and radical at the same time?

In a new paper, published in Physical Review D, my colleagues and I propose a striking alternative. Our calculations suggest the Big Bang was not the start of everything, but rather the outcome of a gravitational crunch or collapse that formed a very massive black hole – followed by a bounce inside it.

This idea, which we call the black hole universe, offers a radically different view of cosmic origins, yet it is grounded entirely in known physics and observations.

….

In our new paper, we show that gravitational collapse does not have to end in a singularity. We find an exact analytical solution – a mathematical result with no approximations. Our maths show that as we approach the potential singularity, the size of the universe changes as a (hyperbolic) function of cosmic time.

This simple mathematical solution describes how a collapsing cloud of matter can reach a high-density state and then bounce, rebounding outward into a new expanding phase.

But how come Penrose’s theorems forbid out such outcomes? It’s all down to a rule called the quantum exclusion principle, which states that no two identical particles known as fermions can occupy the same quantum state (such as angular momentum, or “spin”).

And we show that this rule prevents the particles in the collapsing matter from being squeezed indefinitely. As a result, the collapse halts and reverses. The bounce is not only possible – it’s inevitable under the right conditions.

Crucially, this bounce occurs entirely within the framework of general relativity, which applies on large scales such as stars and galaxies, combined with the basic principles of quantum mechanics – no exotic fields, extra dimensions or speculative physics required.

What if the Big Bang wasn’t the beginning? Our research suggests it may have taken place inside a black hole

New theory makes testable predictions.

theconversation.com

Related paper:

https://journals.aps.org/prd/abstract/10.1103/PhysRevD.111.103537

 

[Flyaway]

Discovery of giant planet orbiting tiny star challenges theories on planet formation

Star TOI-6894 is just like many in our galaxy, a small red dwarf, and only ~20% of the mass of our Sun. Like many small stars, it is not expected to provide suitable conditions for the formation and hosting of a large planet.

However, as published today in Nature Astronomy, an international team of astronomers have found the unmistakable signature of a giant planet, called TOI-6894b, orbiting this tiny star.

https://www.eurekalert.org/news-releases/1085419

Related paper:

A transiting giant planet in orbit around a 0.2-solar-mass host star - Nature Astronomy

Analysis of data from multiple instruments reveals a giant exoplanet in orbit around the 0.2-solar-mass star TOI-6894. The existence of this exoplanetary system challenges assumptions about planet formation and it is an excellent target for atmospheric characterization.

www.nature.com

 

[Justo Miranda]

Fascinating. Here's the preprint:

A Spiral Structure in the Inner Oort Cloud

As the Galactic tide acts to decouple bodies from the scattered disk it creates a spiral structure in physical space that is roughly 15,000 au in length. The spiral is long-lived and persists in the inner Oort cloud to the present time. Here we discuss dynamics underlying the Oort spiral and...

arxiv.org

It will be necessary to modify the old illustrations that depicted the Oort cloud as a sphere, it makes sense that it would deform due to gravitational changes every time the solar system passes through the galactic plane ascending or descending in its orbit around the center, or when it approaches the spiral arm, or when it receives magnetic influences or other wonders that we do not yet know.

 

[NMaude]

Anton Petrov has a video about the confirmation in a lab of a bizarre relativistic effect predicted in 1959:

Hello and welcome! My name is Anton and in this video, we will talk about an experiment/art project confirming Terrell-Penrose relativistic effect that rotates objects at high velocities
Links:
https://physicsworld.com/a/curious-co...https://www.youtube.com/redirect?ev...-for-the-first-time-in-the-lab/&v=EaOQeGFVHgs
https://www.nature.com/articles/s4200...https://www.youtube.com/redirect?ev...com/articles/s42005-025-02003-6&v=EaOQeGFVHgs
https://arxiv.org/abs/2409.04296https://www.youtube.com/redirect?ev...ttps://arxiv.org/abs/2409.04296&v=EaOQeGFVHgs
https://en.wikipedia.org/wiki/Terrell...
https://www.youtube.com/redirect?ev...pedia.org/wiki/Terrell_rotation&v=EaOQeGFVHgs
Additional videos:
https://www.youtube.com/watch?v=QvQcrpGq1y0
• Real Life Alchemy Confirmed, Lead Turned I...

• So, What Happened to Project Breakthrough ...
https://www.youtube.com/watch?v=HwPTF_TZvWY
#relativity #einstein #terrellhttps://www.youtube.com/hashtag/terrell

0:00 Relativistic video game
3:00 These have been all proven
3:55 Terrell-Penrose rotation
5:15 Contraction effects are not entirely correct
6:20 Original propositions
9:45 Proven finally!
11:30 Practical use...maybe