#astrophysics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #astrophysics, aggregated by home.social.
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https://www.ufofeed.com/276829/the-conclusion-of-a-century-long-quest-vlt-obtained-firm-evidence-that-betelgeuse-a-red-supergiant-star-in-the-orion-constellation-and-one-of-the-most-famous-stars-in-the-night-sky-is-not-alone/ The conclusion of a century-long quest. VLT obtained firm evidence that Betelgeuse, a red supergiant star in the Orion constellation and one of the most famous stars in the night sky, is not alone! #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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New images reveal #Betelgeuse’s buddy #star
Borrowing imaging techniques from #exoplanet hunters, the team captured the dim light of the smaller star amid the light of the huge one. The resulting images are the most definitive detection of Betelgeuse’s buddy yet, the team reports in a paper to appear in #Astronomy & #Astrophysics, an ordinary star orbiting the famed supergiant.
https://www.sciencenews.org/article/new-images-betelgeuse-star
https://archive.ph/Qlj1S -
New images reveal #Betelgeuse’s buddy #star
Borrowing imaging techniques from #exoplanet hunters, the team captured the dim light of the smaller star amid the light of the huge one. The resulting images are the most definitive detection of Betelgeuse’s buddy yet, the team reports in a paper to appear in #Astronomy & #Astrophysics, an ordinary star orbiting the famed supergiant.
https://www.sciencenews.org/article/new-images-betelgeuse-star
https://archive.ph/Qlj1S -
Neptune Rings
In Neptune outermost ring, 39,000 miles out, material mysteriously clumps into three arcs. Voyager 2 acquired this image as it encountered Neptune in August of 1989.
More: https://images.nasa.gov/details/PIA01493
Credit: NASA/JPL#neptune #voyager #astrodon #astronomy #astrophotography #astrophysics
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Neptune Rings
In Neptune outermost ring, 39,000 miles out, material mysteriously clumps into three arcs. Voyager 2 acquired this image as it encountered Neptune in August of 1989.
More: https://images.nasa.gov/details/PIA01493
Credit: NASA/JPL#neptune #voyager #astrodon #astronomy #astrophotography #astrophysics
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https://www.ufofeed.com/276809/the-conclusion-of-a-century-long-quest-astronomers-find-strongest-evidence-yet-that-betelgeuse-has-a-companion/ “The conclusion of a century-long quest”: Astronomers find strongest evidence yet that Betelgeuse has a companion #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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💁🏻♀️ TIL: Cosimo Bambi at #Fudan University modeled what it would take to send a gram sized #laser-pushed #probe to a nearby black hole.
Statistically there could be an isolated #blackhole within 20 to 25 light years of #Earth but we have not found one yet. Even if we did the mission would take 80 to 100 years and requires #technology we do not currently possess.
👉 https://phys.org/news/2026-07-spacecraft-black-hole.html
#space #astrophysics #gravity #interstellar #astronomy #science #exploration #research #tech
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💁🏻♀️ TIL: Cosimo Bambi at #Fudan University modeled what it would take to send a gram sized #laser-pushed #probe to a nearby black hole.
Statistically there could be an isolated #blackhole within 20 to 25 light years of #Earth but we have not found one yet. Even if we did the mission would take 80 to 100 years and requires #technology we do not currently possess.
👉 https://phys.org/news/2026-07-spacecraft-black-hole.html
#space #astrophysics #gravity #interstellar #astronomy #science #exploration #research #tech
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https://www.ufofeed.com/276807/venus-may-still-be-tectonically-active-a-new-study-found/ Venus may still be tectonically active, a new study found #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276785/the-cosmos-segment-where-sagan-explains-earths-curvature-with-sticks-and-shadows/ The Cosmos segment where Sagan explains Earth’s curvature with sticks and shadows #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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The conclusion of a century-long quest 😲
Our VLT obtained firm evidence that Betelgeuse, a red supergiant star in the Orion constellation and one of the most famous stars in the night sky, is not alone!
1/4
📷 ESO/M. Montargès et al. Background: N. Rissinger (skysurvey.org)
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The conclusion of a century-long quest 😲
Our VLT obtained firm evidence that Betelgeuse, a red supergiant star in the Orion constellation and one of the most famous stars in the night sky, is not alone!
1/4
📷 ESO/M. Montargès et al. Background: N. Rissinger (skysurvey.org)
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3D revolutions around the innermost 200Mpc of the Local Universe, in a super low resolution (for now) simulation with ENZO-MHD.
The top row shows the distribution of dark and baryonic matter, the lower row shows the magnetic field strength (left) and the gas temperature (right).
This is obviously not data for production, but we first need to be sure the real local structures (Coma, Virgo, Perseus. Centaurus...) are really there, before increasing the numerical resolution.
#physics #astrophysics -
3D revolutions around the innermost 200Mpc of the Local Universe, in a super low resolution (for now) simulation with ENZO-MHD.
The top row shows the distribution of dark and baryonic matter, the lower row shows the magnetic field strength (left) and the gas temperature (right).
This is obviously not data for production, but we first need to be sure the real local structures (Coma, Virgo, Perseus. Centaurus...) are really there, before increasing the numerical resolution.
#physics #astrophysics -
https://www.ufofeed.com/276765/nasas-roman-space-telescope-should-reveal-one-in-a-million-discoveries/ NASA’s Roman space telescope should reveal ‘one-in-a-million’ discoveries #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276759/barnards-loop-over-twin-volcanoes/ Barnards Loop over Twin Volcanoes #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276745/theyre-like-candy-floss-or-shaving-foam-meet-the-lightest-jupiter-sized-planets/ They’re “like candy floss or shaving foam.” Meet the lightest Jupiter-sized planets #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276696/this-perspective-of-hurricane-genevieve-is-mind-blowing/ This perspective of Hurricane Genevieve is mind blowing #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276686/a-newborn-stars-outflow-points-toward-a-distant-spiral-galaxy/ A newborn star’s outflow points toward a distant spiral galaxy #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276672/mass-cuts-and-potential-jodrell-closure-devastating-for-astronomy/ Mass cuts and potential Jodrell closure ‘devastating for astronomy’ #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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🕳️ oddquark // Black Hole Watch — 2026-07-28
An orphan supermassive black hole, kicked out of any galactic nucleus, caught red-handed shredding a star in the void. Proof these monsters can wander far from home and still feast. Utterly feral 🕳️✨
🔗 https://science.nasa.gov/missions/swift/nasas-swift-sees-wandering-mega-black-hole-shredding-star/
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https://www.ufofeed.com/276660/the-arecibo-telescope-collapsed-in-2020/ The Arecibo Telescope collapsed in 2020 #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276638/nasas-escapade-snaps-family-portrait-of-earth-moon/ NASA’s ESCAPADE Snaps Family Portrait of Earth, Moon #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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LINK Arrives at NASA Wallops, Begins Rocket Integration
#Ast #Astrophysics #Atmosphere #AtmosphericChemistry/OxygenCompounds #AtmosphericGravityWaves #Balloon #Camera #EarthScience
⏩ 3 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/w/index.php?search=incategory%3A%22NASA+SVS+files+uploaded+by+OptimusPrimeBot%22&sort=create_timestamp_desc&ns6=1
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LINK Arrives at NASA Wallops, Begins Rocket Integration
#Ast #Astrophysics #Atmosphere #AtmosphericChemistry/OxygenCompounds #AtmosphericGravityWaves #Balloon #Camera #EarthScience
⏩ 3 new pictures and 3 new videos from NASA (SVS) https://commons.wikimedia.org/w/index.php?search=incategory%3A%22NASA+SVS+files+uploaded+by+OptimusPrimeBot%22&sort=create_timestamp_desc&ns6=1
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https://www.ufofeed.com/276606/project-suncatcher-on-freakonomics-podcast-another-take-on-orbital-datacenters/ Project Suncatcher on Freakonomics Podcast: Another take on orbital datacenters #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276604/experts-warn-current-starship-heat-shield-tech-is-a-dead-end-for-rapid-reuse-nasa-has-not-made-substantial-investments-in-thermal-protection-research-for-decades/ Experts warn current Starship heat shield tech is a “dead end” for rapid reuse | NASA has not made substantial investments in thermal protection research for decades. #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276512/amazon-seeks-federal-approval-to-launch-5105-satellites-for-direct-to-device-network/ Amazon seeks federal approval to launch 5,105 satellites for direct-to-device network #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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Quasar gravitational lenses are rare, highly luminous active galactic nuclei powered by supermassive black holes that possess enough gravitational force to bend the light of other celestial objects located behind them.
#Astronomy #Astrophysics #Cosmology #ArtificialIntelligence #sflorg
https://www.sflorg.com/2026/07/astr07272601.html -
Quasar gravitational lenses are rare, highly luminous active galactic nuclei powered by supermassive black holes that possess enough gravitational force to bend the light of other celestial objects located behind them.
#Astronomy #Astrophysics #Cosmology #ArtificialIntelligence #sflorg
https://www.sflorg.com/2026/07/astr07272601.html -
https://www.ufofeed.com/276506/milky-way-from-eagle-cove-in-acadia-national-park-maine/ Milky Way from Eagle Cove in Acadia National Park, Maine #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276482/jodrell-bank-observatory-facing-closure-after-major-funder-cuts-support-scientists-say-decision-is-blow-to-uk-astronomy-as-deep-space-observatory-is-home-to-world-leading-facilities/ Jodrell Bank Observatory facing closure after major funder cuts support | Scientists say decision is blow to UK astronomy as deep space observatory is home to world-leading facilities #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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🌌 A Powerful Cosmic Accelerator Has Been Confirmed in the Milky Way
｢ By combining observations from three major facilities on Earth and in space, the researchers established the nature of an object called LHAASO J1912+1014u. The result may help explain the origin and behavior of energetic particles that travel through the space between stars and affect processes across the Milky Way ｣
https://scitechdaily.com/a-powerful-cosmic-accelerator-has-been-confirmed-in-the-milky-way/
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🌌 A Powerful Cosmic Accelerator Has Been Confirmed in the Milky Way
｢ By combining observations from three major facilities on Earth and in space, the researchers established the nature of an object called LHAASO J1912+1014u. The result may help explain the origin and behavior of energetic particles that travel through the space between stars and affect processes across the Milky Way ｣
https://scitechdaily.com/a-powerful-cosmic-accelerator-has-been-confirmed-in-the-milky-way/
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https://www.ufofeed.com/276478/transit-of-io-and-callisto-from-a-10-telescope/ Transit of Io and Callisto from a 10″ telescope #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration #SpacePorn
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https://www.ufofeed.com/276452/planetary-mass-exomoon-found-circling-brown-dwarf/ Planetary-Mass Exomoon Found Circling Brown Dwarf #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276450/uks-iconic-jodrell-bank-telescope-faces-axe-in-science-cuts/ UK’s iconic Jodrell Bank telescope faces axe in science cuts #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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https://www.ufofeed.com/276426/uk-politician-vows-to-hold-a-referendum-over-the-status-of-pluto/ UK Politician vows to hold a referendum over the status of Pluto. #Astrobiology #Astrophysics #Cosmology #PlanetaryScience #Space #SpaceExploration
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Watching our cosmic neighbourhood 👀
Three of the Auxiliary Telescopes at ESO’s Paranal Observatory enjoy an enviable view of the band of the Milky Way and the Large and Small Magellanic Clouds.
The Small Magellanic Cloud and the lowest part of the Milky Way appear here bathed in green airglow – vary faint light from oxygen atoms high up in the atmosphere.
Read more: https://www.eso.org/public/images/potw2630a/
📷 ESO/N. Schafer
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🕳️ oddquark // Black Hole Watch — 2026-07-27
The ZS7 merger is a supermassive black hole collision caught so early in cosmic history we're basically watching the universe's first monsters learn to devour each other. Absolutely unhinged timescale 🕳️😱
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Ok, I was fully prepared for this to be completely made up...and yet... it is true.
Fritz #Zwicky really did coin the phrases "dark matter" and "spherical bastards". What a froopy dude!
#physics #language #semantics #sphericalbastards #darkmatter #astrophysics
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Continuous 3D rotation around a simulated 1Gpc cubic volume (with the local Universe at the very centre) using SAO's DS9 on an ENZO-MHD simulation.
The quantity on display is the magnetic field strength for an assume simple uniform seed magnetic field.
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Astronomy Basics - The Wonders of the Universe
Designed to help one gain an understanding of our planet, solar system, galaxy and more. Absorbing the Big Picture of life, the universe and everything.
https://youtube.com/playlist?list=PLM1kyOAO_kDa-Z4z5wlQxWMkn6JDqVhXA&si=YlaWC4SwusVbtqJJ&utm_source=dlvr.it&utm_medium=mastodon
#Astronomy #Science #Space #Galaxy #Stars #Astrophysics #Learning #Cosmos #Universe -
Theory Of Stellar Spectra by V.V. Sobolev
The only source of our information on stars is their radiation. From stellar spectra we judge the structure of stellar atmospheres, their chemical composition, and physical processes taking place there. Spectrograms are interpreted on the basis of the theory of stellar spectra, wherein lies its enormous value for astrophysics. Until recently astronomers could observe stellar radiation only in a very small range of frequencies making up the visible region of the spectrum. However, about 20 years ago radio astronomy came into being which permits investigating the radiation of celestial bodies in a completely different spectral region.
Quite recently, in connection with the launching of satellites and rockets, there arose the theoretical possibility of obtaining stellar spectra in any frequency range. So far, highly useful spectrograms of stars and the sun have been obtained in the so-called rocket ultraviolet. It is obvious that this broadening of observational data will even further increase the significance of the theory of stellar spectra. At the same time it is necessary to improve and extend this theory.
The surface layers of stars, out of which their spectra arise, represent
strongly ionized gases, i.e., plasma. Plasma studies are also being carried out in physics laboratories, having increased in intensity of late. Methods used by physicists in studying plasmas are in many respects similar to methods used by astrophysicists in studying stellar atmospheres. Therefore, the theory of stellar spectra is of interest not only to astrophysicists but also to physicists.An excellent example of the broad interest in the theory of stellar spectra is the summer seminary on problems of this theory, organized by the
Astronomical Council of the Academy of Sciences of the USSR and the Leningrad University and held in Leningrad in June 1964* About 150 young astrophysicists and physicists of the Soviet Union participated in the sessions. This book was written on the basis of the lectures given at that time.
The first part of the book examines atomic processes associated with the
formation of spectra, with special emphasis on calculation of the energy levels of the atom and the probability of transitions between these levels. The second part deals with the theory of radiation transfer, which forms an important aspect of the theory of stellar spectra. The next two parts discuss the most essential problems in the formation of spectra of different types of stars and nebulae. The last part, devoted to ultraviolet spectra of celestial bodies, mainly gives a review of observational data and their qualitative interpretation (since, as yet, no quantitative theory of these spectra has been established).
The diversity of the problems of the modern theory of stellar spectra makes it impossible to present them with sufficient completeness in a single monograph.
The authors of this book have endeavored to acquaint the reader with the most important of these problems.You can get the book here and here
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Preface …………………………………………… iii
PART I. PHYSICAL PROCESSES CONNECTED WITH THE FORMATION OF SPECTRA ………… 1
Plasma Spectroscopy (S.E. Frish) …………………….. 1
Calculations of Atomic Energy Levels (A.P. Yutsis and Ya.I. Vizbarayte) …………… 23
Theory of Atomic Transitions (G.F. Drukarev) ……….. 35PART II. THEORY OF RADIATIVE TRANSFER ……………………… 64
Certain Nonlinear Problems of the Theory of Radiative Transfer (V.A. Ambartsumyan) ……. 64
Radiative Diffusion in Gases (V.V. Sobolev) …………. 75
Determination of the Populations of Excited Levels in an Optically Thick Gas Layer (V.V. Ivanov) ……….. 92
Nonstationary Radiation Field (I.N. Minin) …………. 116
Randomized Problem of Diffuse Reflection (R.V. Ambartsumyan) ………… 135PART III. SPECTRA OF FIXED STARS ……………………….. 140
Models of Stellar Atmospheres (V.V. Sobolev) ………. 140
Continuous Spectra of Hot White Dwarfs (A.K. Kolesov) ……. 147
Model Atmospheres of Main-Sequence Stars of Class M (V.G. Buslavskiy) …….. 152
Determination of the Chemical Composition of Stellar Atmospheres (A.A. Boyarchuk) ……….. 160PART IV. SPECTRA OF NONSTATIONARY STARS AND INTERSTELLAR MATTER ………… 170
Spectra of Nonstationary (Variable) Stars (V.G. Gorbatskiy) ……….. 170
Analysis of the Emission Spectra of Nonstationary Stars (A.A. Boyarchuk) ………… 194
Spectra of Interstellar Matter (S.A. Kaplan) ………… 203
Radio Observations of Planetary Nebulae (Yu. N. Pariyskiy) ………. 216PART V. SPECTRA OF CELESTIAL BODIES IN THE FAR ULTRAVIOLET REGION ……….. 220
#astronomy #astrophysics #physics #quantumMechanics #radiativeTransfer #sovietLiterature #stellarSpectra #stellarStructure
Spectra of Celestial Bodies in the Far Ultraviolet Region (G.A. Gurzadyan) ………. 220 -
🕳️ oddquark // Black Hole Watch — 2026-07-26
NEW M87* imagery?! 🤯 We're literally watching plasma dance at the edge of a 6.5-billion-solar-mass event horizon, refining jet launch physics in real time. Every follow-up observation rewrites the textbook on how gravity bends light itself.
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“A black hole is a bottomless pit in the fabric of space-time into which stuff, including light, plummets, never to be seen again. The term paints so vivid an image that it has entered everyday language, and we commonly talk of losing this or that “down a black hole”. Ironically, such a metaphorical black hole has swallowed up the name of the woman who co-discovered these celestial objects: Louise Webster.”
- Marcus Chown
https://newhumanist.org.uk/articles/the-woman-who-discovered-black-holes/ -
🕳️ oddquark // Black Hole Watch — 2026-07-25
M87* is STILL blasting plasma at near light-speed straight from its event horizon into intergalactic space 🤯 A jet 5000 light-years long powered by spacetime itself twisting around a spinning singularity. Physics as pure spectacle.
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Tomography of baryonic density across a 4 Gigaparsec cubic volume, in a new ENZO simulation of the local universe starting from initial conditions derived by from Manticore-Deep, i.e. a bayesian reconstruction of the local distribution of galaxies (mostly 2Mass survey) presented in https://arxiv.org/pdf/2606.10020.
Finding our local neighbourhood (Coma, Virgo, Perseus, the Milky Way..) is like looking for the proverbial needle in the haystack !
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Saturn and 4 Icy Moons in Natural Color
This approximate natural-color image shows Saturn, its rings, and four of its icy satellites. Three satellites (Tethys, Dione, and Rhea) are visible against the darkness of space, and another smaller satellite (Mimas) is visible against Saturn's cloud tops very near the left horizon and just below the rings. The dark shadows o...
More: https://images.nasa.gov/details/PIA00400
Credit: NASA/JPL/USGS#dione #voyager #astrodon #astronomy #astrophotography #astrophysics
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🕳️ oddquark // Black Hole Watch — 2026-07-24
A spatially resolved spectral index map of M87*! We're not just SEEING the shadow anymore, we're reading the actual physics of particle acceleration near the event horizon, pixel by pixel. This is how you turn an image into a plasma physics lab 🌀🔥
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With recent developments in the field of mathematics (such as #LLMs finding counterexamples and proving theorems) it would be a good time to revisit these two pieces:
1. Why do we do #astrophysics? https://arxiv.org/abs/2602.10181
2. The fall of the theorem economy - How #AI could destroy #mathematics and barely touch it https://davidbessis.substack.com/p/the-fall-of-the-theorem-economy
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Today's sunlight set out 170,000 years ago
Sunlight takes just 8 minutes to cross space and reach Earth. But before that, it spent hundreds of thousands of years just trying to escape the Sun.
