#astrophysics — Public Fediverse posts

3I/ATLAS is a rare, comet-like interstellar object that formed around a distant star and traveled for millions of years before entering our solar system. It is only the third such object ever detected by astronomers.
#Astronomy #Astrophysics #PlanetaryScience #sflorg
https://www.sflorg.com/2026/09/astr09082601.html

https://www.europesays.com/uk/1193204/ Astronomers confirm Einstein’s gravity by viewing light from behind a supermassive black hole #AccretionDisk #Astronomy #Astrophysics #BlackHole #Cosmology #DanWilkins #Einstein #GeneralRelativity #IZw1 #IZwicky1 #LightBending #NuSTAR #Physics #Research #Science #SpaceNews #StanfordUniversity #SupermassiveBlackHole #UK #UnitedKingdom #XRayEchoes #XRayReverberation #XRays #XMMNewton

I hugely messed up trying to change the timing of the poll and so I deleted all replies 😩

https://mastodon.social/@franco_vazza/117217928343077828

Anyway, roughly 50% of the 38 respondents correctly choose "no, never", while the rest was scattered in the other two options.

So let me briefly explain:

#physics #astrophysics #science #Electromagnetism_trivia

Neptune Clouds on the Dark Spot

This photo was taken by NASA Voyager 2 wide-angle camera. Light at methane wavelengths is mostly absorbed in the deeper atmosphere. The bright, white feature is a high-altitude cloud just south of the Great Dark Spot.

More: https://images.nasa.gov/details/PIA02222
Credit: NASA/JPL

#neptune #voyager #astrodon #astronomy #astrophotography #astrophysics

Posts under the #ag2026garching conference hashtag are starting to come in, follow the hashtag for the latest in astronomy!

Or tag along on this particularly convenient fediwall view: https://fediwall.social/?servers=mastodon.social,scicomm.xyz,wisskomm.social,fedi.buzz&tags=ag2026garching,ag2026&[email protected]&lang=en,de&hide=nsfw,bots&title=AG+2026+Garching

Here's hoping that we here on the fediverse will be simultaneously able to
- show the live posters from the conference how much we appreciate that they're keeping us informed
- communicate that we really appreciate ALT text and would love to have it on all their posts with media attached

#ag2026garching #astrodon #astronomy #astrophysics #fediwall

Posts under the #ag2026garching conference hashtag are starting to come in, follow the hashtag for the latest in astronomy!

Or tag along on this particularly convenient fediwall view: https://fediwall.social/?servers=mastodon.social,scicomm.xyz,wisskomm.social,fedi.buzz&tags=ag2026garching,ag2026&[email protected]&lang=en,de&hide=nsfw,bots&title=AG+2026+Garching

Here's hoping that we here on the fediverse will be simultaneously able to
- show the live posters from the conference how much we appreciate that they're keeping us informed
- communicate that we really appreciate ALT text and would love to have it on all their posts with media attached

#ag2026garching #astrodon #astronomy #astrophysics #fediwall

Posts under the #ag2026garching conference hashtag are starting to come in, follow the hashtag for the latest in astronomy!

Or tag along on this particularly convenient fediwall view: https://fediwall.social/?servers=mastodon.social,scicomm.xyz,wisskomm.social,fedi.buzz&tags=ag2026garching,ag2026&[email protected]&lang=en,de&hide=nsfw,bots&title=AG+2026+Garching

Here's hoping that we here on the fediverse will be simultaneously able to
- show the live posters from the conference how much we appreciate that they're keeping us informed
- communicate that we really appreciate ALT text and would love to have it on all their posts with media attached

#ag2026garching #astrodon #astronomy #astrophysics #fediwall

Posts under the #ag2026garching conference hashtag are starting to come in, follow the hashtag for the latest in astronomy!

Or tag along on this particularly convenient fediwall view: https://fediwall.social/?servers=mastodon.social,scicomm.xyz,wisskomm.social,fedi.buzz&tags=ag2026garching,ag2026&[email protected]&lang=en,de&hide=nsfw,bots&title=AG+2026+Garching

Here's hoping that we here on the fediverse will be simultaneously able to
- show the live posters from the conference how much we appreciate that they're keeping us informed
- communicate that we really appreciate ALT text and would love to have it on all their posts with media attached

#ag2026garching #astrodon #astronomy #astrophysics #fediwall

Posts under the #ag2026garching conference hashtag are starting to come in, follow the hashtag for the latest in astronomy!

Or tag along on this particularly convenient fediwall view: https://fediwall.social/?servers=mastodon.social,scicomm.xyz,wisskomm.social,fedi.buzz&tags=ag2026garching,ag2026&[email protected]&lang=en,de&hide=nsfw,bots&title=AG+2026+Garching

Here's hoping that we here on the fediverse will be simultaneously able to
- show the live posters from the conference how much we appreciate that they're keeping us informed
- communicate that we really appreciate ALT text and would love to have it on all their posts with media attached

#ag2026garching #astrodon #astronomy #astrophysics #fediwall

@cosmos4u Are you aware of the Peertube instance https://solarsystem.video/? With accounts such as
@planetary_research_media
@europlanet_media
@ipgp_planets
@issi_media
@openplanetary
@planetary_research
@lightcurvefilmsforesa
@lightcurvefilms

and many more, all part of the Fediverse that you can follow directly from your Mastodon account?

Discover https://solarsystem.video/videos/overview
and browse https://solarsystem.video/videos/browse

Oh, and your quoted video (which lives on a Pixelfed instance) works just fine too of course 😊

#video #peertube #fediverse #astrodon #astronomy #astrophysics #planetaryscience #feditips

@cosmos4u Are you aware of the Peertube instance https://solarsystem.video/? With accounts such as
@planetary_research_media
@europlanet_media
@ipgp_planets
@issi_media
@openplanetary
@planetary_research
@lightcurvefilmsforesa
@lightcurvefilms

and many more, all part of the Fediverse that you can follow directly from your Mastodon account?

Discover https://solarsystem.video/videos/overview
and browse https://solarsystem.video/videos/browse

Oh, and your quoted video (which lives on a Pixelfed instance) works just fine too of course 😊

#video #peertube #fediverse #astrodon #astronomy #astrophysics #planetaryscience #feditips

@cosmos4u Are you aware of the Peertube instance https://solarsystem.video/? With accounts such as
@planetary_research_media
@europlanet_media
@ipgp_planets
@issi_media
@openplanetary
@planetary_research
@lightcurvefilmsforesa
@lightcurvefilms

and many more, all part of the Fediverse that you can follow directly from your Mastodon account?

Discover https://solarsystem.video/videos/overview
and browse https://solarsystem.video/videos/browse

Oh, and your quoted video (which lives on a Pixelfed instance) works just fine too of course 😊

#video #peertube #fediverse #astrodon #astronomy #astrophysics #planetaryscience #feditips

@cosmos4u Are you aware of the Peertube instance https://solarsystem.video/? With accounts such as
@planetary_research_media
@europlanet_media
@ipgp_planets
@issi_media
@openplanetary
@planetary_research
@lightcurvefilmsforesa
@lightcurvefilms

and many more, all part of the Fediverse that you can follow directly from your Mastodon account?

Discover https://solarsystem.video/videos/overview
and browse https://solarsystem.video/videos/browse

Oh, and your quoted video (which lives on a Pixelfed instance) works just fine too of course 😊

#video #peertube #fediverse #astrodon #astronomy #astrophysics #planetaryscience #feditips

@cosmos4u Are you aware of the Peertube instance https://solarsystem.video/? With accounts such as
@planetary_research_media
@europlanet_media
@ipgp_planets
@issi_media
@openplanetary
@planetary_research
@lightcurvefilmsforesa
@lightcurvefilms

and many more, all part of the Fediverse that you can follow directly from your Mastodon account?

Discover https://solarsystem.video/videos/overview
and browse https://solarsystem.video/videos/browse

Oh, and your quoted video (which lives on a Pixelfed instance) works just fine too of course 😊

#video #peertube #fediverse #astrodon #astronomy #astrophysics #planetaryscience #feditips

The Mountainous Shoreline of Sputnik Planum

In this highest-resolution image from NASA's New Horizons spacecraft, great blocks of Pluto's water-ice crust appear jammed together in the informally named al-Idrisi mountains. Some mountain sides appear coated in dark material, while other sides ...

More: https://images.nasa.gov/details/PIA20198
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#pluto #newhorizons #astrodon #astronomy #astrophotography #astrophysics

The Mountainous Shoreline of Sputnik Planum

In this highest-resolution image from NASA's New Horizons spacecraft, great blocks of Pluto's water-ice crust appear jammed together in the informally named al-Idrisi mountains. Some mountain sides appear coated in dark material, while other sides ...

More: https://images.nasa.gov/details/PIA20198
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#pluto #newhorizons #astrodon #astronomy #astrophotography #astrophysics

Charon in Enhanced Color

NASA's New Horizons captured this high-resolution enhanced color view of Charon just before closest approach on July 14, 2015. The image combines blue, red and infrared images taken by the spacecraft's Ralph/Multispectral Visual Imaging Camera (MVIC); the colors are...

More: https://images.nasa.gov/details/PIA19968
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

#charon #newhorizons #astrodon #astronomy #astrophotography #astrophysics

🕳️ oddquark // Black Hole Watch — 2026-09-08

Ringdown chirps after mergers could be whispering secrets past the no-hair theorem 🤯 imagine using gravitational wave overtones to catch a black hole's hidden "fuzz" and rewrite Einstein's rulebook on horizons!

🔗 https://phys.org/news/2026-09-black-holes-hidden-hair-scientists.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-08

Ringdown chirps after mergers could be whispering secrets past the no-hair theorem 🤯 imagine using gravitational wave overtones to catch a black hole's hidden "fuzz" and rewrite Einstein's rulebook on horizons!

🔗 https://phys.org/news/2026-09-black-holes-hidden-hair-scientists.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

How to Unteach Relativity
------------------------

You may know I found the Unified Field Theory: https://github.com/chemoelectric/iris-numbers-and-unified-field-theory

So Relativity needs unteaching. Do it thus:

Einstein treated c as ‘the speed of light in a vacuum’.

But c is ‘the speed of waves in an electromagnetic field’.

Putting the two definitions side by side makes Einstein’s error obvious: an EM field is not a vacuum! It is, in fact, the medium for EM waves the ether had been presumed to be...

#physics #astrophysics #science

Dark Moon, Dramatic Plume

Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn most dramatic moons. This image was captured by NASA Cassini spacecraft.

More: https://images.nasa.gov/details/PIA14599
Credit: NASA/JPL-Caltech/Space Science Institute

#enceladus #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

Dark Moon, Dramatic Plume

Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn most dramatic moons. This image was captured by NASA Cassini spacecraft.

More: https://images.nasa.gov/details/PIA14599
Credit: NASA/JPL-Caltech/Space Science Institute

#enceladus #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

Dark Moon, Dramatic Plume

Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn most dramatic moons. This image was captured by NASA Cassini spacecraft.

More: https://images.nasa.gov/details/PIA14599
Credit: NASA/JPL-Caltech/Space Science Institute

#enceladus #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

Dark Moon, Dramatic Plume

Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn most dramatic moons. This image was captured by NASA Cassini spacecraft.

More: https://images.nasa.gov/details/PIA14599
Credit: NASA/JPL-Caltech/Space Science Institute

#enceladus #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

Dark Moon, Dramatic Plume

Below a darkened Enceladus, a plume of water ice is backlit in this view of one of Saturn most dramatic moons. This image was captured by NASA Cassini spacecraft.

More: https://images.nasa.gov/details/PIA14599
Credit: NASA/JPL-Caltech/Space Science Institute

#enceladus #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

we up!! join the stream at https://live.gngr.fail

[Tis] blowing off *even more* some silk

#gaming #chatting #minecraft #hollowknight #silksong #deltarune #undertale #programming #tech #code #astrophysics #science

https://live.gngr.fail

we up!! join the stream at https://live.gngr.fail

[Tis] blowing off *even more* some silk

#gaming #chatting #minecraft #hollowknight #silksong #deltarune #undertale #programming #tech #code #astrophysics #science

https://live.gngr.fail

we up!! join the stream at https://live.gngr.fail

[Tis] blowing off *even more* some silk

#gaming #chatting #minecraft #hollowknight #silksong #deltarune #undertale #programming #tech #code #astrophysics #science

https://live.gngr.fail

we up!! join the stream at https://live.gngr.fail

[Tis] blowing off *even more* some silk

#gaming #chatting #minecraft #hollowknight #silksong #deltarune #undertale #programming #tech #code #astrophysics #science

https://live.gngr.fail

we up!! join the stream at https://live.gngr.fail

[Tis] blowing off *even more* some silk

#gaming #chatting #minecraft #hollowknight #silksong #deltarune #undertale #programming #tech #code #astrophysics #science

https://live.gngr.fail

https://www.europesays.com/ie/677151/ Two of the Universe’s Great Mysteries May Have Their Own Dimension #astrophysics #DarkEnergy #DarkMatter #Éire #IE #Ireland #QuantaMagazine #Science #Space #StringTheory

Conjoined Moons

Looking like half of a figure eight, two of Saturn moons appear conjoined in this image from NASA Cassini spacecraft. The moon Dione, at the top in the image, is actually closer to the spacecraft, appearing to blend seamlessly with the moon Rhea.

More: https://images.nasa.gov/details/PIA12728
Credit: NASA/JPL/Space Science Institute

#dione #cassini #cassinihuygens #astrodon #astronomy #astrophotography #astrophysics

Two of the Universe's Great Mysteries May Have Their Own Dimension

https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/

Two of the Universe's Great Mysteries May Have Their Own Dimension

https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/

Two of the Universe's Great Mysteries May Have Their Own Dimension

https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/

Two of the Universe's Great Mysteries May Have Their Own Dimension

https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/

Two of the Universe's Great Mysteries May Have Their Own Dimension

https://fed.brid.gy/r/https://www.wired.com/story/dark-energy-matter-may-have-own-dimension/

Ganymede At 150,000 Miles

This picture of Ganymede, Jupiter's largest satellite, was taken by NASA's Voyager 1 on the afternoon of March 5, 1979, from a range of about 250,000 km (150,000 mi.). The center of the picture is at 60 north latitude and 318 longitude, and the distance across the bottom of the photograph is about 1000 km (600 mi.). The smallest features visi...

More: https://images.nasa.gov/details/PIA00380
Credit: NASA/JPL

#ganymede #voyager #astrodon #astronomy #astrophotography #astrophysics

In 1925, 24-year-old graduate student Cecilia Payne calculated that the Sun and other stars were composed overwhelmingly of hydrogen and helium—a result so contrary to accepted astronomy that senior astronomer Henry Norris Russell called it “clearly impossible,”....

By Deep Field · Edited by Lachlan Brown

https://spacedaily.com/t-cecilia-payne-russell-hydrogen-helium-companion/

Stellar atmospheres at PG:
https://www.gutenberg.org/ebooks/73996

#books #astrophysics #Womeninstem

In 1925, 24-year-old graduate student Cecilia Payne calculated that the Sun and other stars were composed overwhelmingly of hydrogen and helium—a result so contrary to accepted astronomy that senior astronomer Henry Norris Russell called it “clearly impossible,”....

By Deep Field · Edited by Lachlan Brown

https://spacedaily.com/t-cecilia-payne-russell-hydrogen-helium-companion/

Stellar atmospheres at PG:
https://www.gutenberg.org/ebooks/73996

#books #astrophysics #Womeninstem

In 1925, 24-year-old graduate student Cecilia Payne calculated that the Sun and other stars were composed overwhelmingly of hydrogen and helium—a result so contrary to accepted astronomy that senior astronomer Henry Norris Russell called it “clearly impossible,”....

By Deep Field · Edited by Lachlan Brown

https://spacedaily.com/t-cecilia-payne-russell-hydrogen-helium-companion/

Stellar atmospheres at PG:
https://www.gutenberg.org/ebooks/73996

#books #astrophysics #Womeninstem

In 1925, 24-year-old graduate student Cecilia Payne calculated that the Sun and other stars were composed overwhelmingly of hydrogen and helium—a result so contrary to accepted astronomy that senior astronomer Henry Norris Russell called it “clearly impossible,”....

By Deep Field · Edited by Lachlan Brown

https://spacedaily.com/t-cecilia-payne-russell-hydrogen-helium-companion/

Stellar atmospheres at PG:
https://www.gutenberg.org/ebooks/73996

#books #astrophysics #Womeninstem

In 1925, 24-year-old graduate student Cecilia Payne calculated that the Sun and other stars were composed overwhelmingly of hydrogen and helium—a result so contrary to accepted astronomy that senior astronomer Henry Norris Russell called it “clearly impossible,”....

By Deep Field · Edited by Lachlan Brown

https://spacedaily.com/t-cecilia-payne-russell-hydrogen-helium-companion/

Stellar atmospheres at PG:
https://www.gutenberg.org/ebooks/73996

#books #astrophysics #Womeninstem

Continuous scanning through the layers of the dark matter distribution in a simulated 150^3 Megaparsec volume, of the "baseline" (=simple physics) run of our Makitra https://cosmosimfrazza.eu/makitra suite of simulations. The resolution is small (512^3 particles/cells) and yet the intricacy of the web of matter is gorgeous already.

#SimulatedUniverses #astrophysics #science #cosmomag

It’s a new MOON(S)!

Suspended here in darkness are two infrared cameras belonging to MOONS, a new instrument of our VLT that recently performed its first observations.

📷 L. Sbordone/ESO

1/3

#astrodon #astronomy #astrophysics #space #science