#3iatlas — Public Fediverse posts on home.social

Where are we now? @[email protected] · 2026-09-05 · 00:29 UTC

2026-09-05 00:00:00 UTC (Delta: 2026-09-04)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.37 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 233 days

🌎 Relative to Earth
- Distance (km): 1,719,779,905.66 km (+2,922,475.93 km)
- Distance (AU): 11.50 (+0.02)
- Light travel time: 1 h 35 min 36.57 s (+9.75 s)

#3IAtlas #InterstellarObject

#3iatlas #interstellarobject

Where are we now? @[email protected] · 2026-09-04 · 00:29 UTC

2026-09-04 00:00:00 UTC (Delta: 2026-09-03)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.37 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 234 days

🌎 Relative to Earth
- Distance (km): 1,716,857,429.73 km (+2,948,716.95 km)
- Distance (AU): 11.48 (+0.02)
- Light travel time: 1 h 35 min 26.82 s (+9.84 s)

#3IAtlas #InterstellarObject

#3iatlas #interstellarobject

Ancient Origins @[email protected] · 2026-09-03 · 23:31 UTC

3I/ATLAS came from interstellar space with an unusual trajectory, strange tail and chemistry. One extraordinary possibility asks whether it could be something beyond an ordinary comet.
#3IATLAS #InterstellarComet #SpaceMysteries #AlienLife #Astronomy
Read more:https://www.ancient-origins.net/3iatlas-alive-interstellar-comet-defies-everything-we-know-00102253

#3iatlas #interstellarcomet #spacemysteries #alienlife #astronomy

Ancient Origins @[email protected] · 2026-09-03 · 23:31 UTC

3I/ATLAS came from interstellar space with an unusual trajectory, strange tail and chemistry. One extraordinary possibility asks whether it could be something beyond an ordinary comet.
#3IATLAS #InterstellarComet #SpaceMysteries #AlienLife #Astronomy
Read more:https://www.ancient-origins.net/3iatlas-alive-interstellar-comet-defies-everything-we-know-00102253

#3iatlas #interstellarcomet #spacemysteries #alienlife #astronomy

Ancient Origins @[email protected] · 2026-09-03 · 23:31 UTC

3I/ATLAS came from interstellar space with an unusual trajectory, strange tail and chemistry. One extraordinary possibility asks whether it could be something beyond an ordinary comet.
#3IATLAS #InterstellarComet #SpaceMysteries #AlienLife #Astronomy
Read more:https://www.ancient-origins.net/3iatlas-alive-interstellar-comet-defies-everything-we-know-00102253

#astronomy #alienlife #spacemysteries #interstellarcomet #3iatlas

In the Dark @[email protected] · 2026-07-18 · 10:48 UTC

Weekly Update from the Open Journal of Astrophysics 18/07/2026

It’s time once more for another Saturday update of activity at the Open Journal of Astrophysics. Since the last update we have published a further six papers, bringing the number in Volume 9 (2026) to 151 and the total so far published by OJAp up to 599.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Tuesday 14th July, is “On combining estimated and analytic covariance matrices” by Alan Heavens (Imperial College London, UK), Lorne Whiteway (University College, London, UK) and Elena Sellentin (Leiden University, The Netherlands). This article, published in the folder Cosmology and Nongalactic Astrophysics, presents an accurate approximation for the combined likelihood function in cosmological data analysis, improving upon previous methods by better representing the heavy tails of the true distribution.

The overlay for this paper is here

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116916991519124229

The second paper for this week, also published on Tuesday 14th July in the folder Cosmology and Nongalactic Astrophysics is: “Line-of-sight shear in SLACS strong lenses II: validation tests with an extended sample” by Natalie B. Hogg (U. Cambridge, UK), Daniel P. Johnson (Université de Montpellier, France), Anowar J. Shajib (U. Chicago, USA) and Julien Larena (Montpellier). The study described in this paper models 27 additional gravitational lenses, finding a significant fraction with unexpectedly large line-of-sight shears. Factors like redshift, filter, and signal-to-noise ratio don’t significantly affect shear magnitudes.

The overlay looks like this:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116917026598474399

The third paper of the week, published on Wednesday 15th July, again in the folder Cosmology and Nongalactic Astrophysics “Investigating the Dark Energy Constraint from Strongly Lensed AGN at LSST-Scale” by Sydney Erickson (Stanford University, USA) and 13 others on behalf of The LSST Dark Energy Science Collaboration. The study uses a new technique to analyze a large sample of lensed Active Galactic Nuclei, providing an independent probe of dark energy and improving constraints on the Universe’s expansion.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116922734297811558

The fourth paper of the week, also published on Wednesday 15th July but in the folder Earth and Planetary Astrophysics is “University of Hawaii 88-inch Telescope Observations of the Interstellar Comet 3I/ATLAS: Spectrophotometric Blue-Sensitive Spectral Time Series Spanning Two Months from Discovery” by W. B. Hoogendam (University of Hawaii, USA) and 24 others from around the world. The study presents observations of the third interstellar object, 3I/ATLAS, using the SuperNova Integral Field Spectrograph, revealing its properties and comparing it to bodies in our solar system.

The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116925616134490970

The fifth paper of the week, published on Friday 17th July in the folder Astrophysics of Galaxies, is “The birth of the intracluster medium: the evolution of multiphase gas and Lyman-α haloes in a z~3 simulated protocluster” by Jake S. Bennett (Harvard Smithsonian CfA, USA), Aaron Smith (U. Nottingham, UK), Fabrizio Arrigoni-Battaia (MPA Garching, Germany), Debora Sijacki (U. Cambridge, UK) , Cassandra Lochhaas (CfA) and Lars Hernquist (CfA). This study uses a cosmological simulation to explore the transition from complex galactic haloes to mature galaxy clusters, focusing on gas distribution, ionisation, and emission changes during this evolution.

The overlay for this one is here:

You can read the final version of this one on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116934117289387295

The sixth and final paper of this week is “Density reconstruction from biased tracers: Testing the equivalence principle through consistency relations” by Lawrence Dam and Omar Darwish (Université de Genève, Switzerland). This was published on Friday 17th July in the folder Cosmology and Nongalactic Astrophysics. It proposes using quadratic estimators to test the weak equivalence principle on cosmological scales, offering a practical alternative to the conventional bispectrum approach.

The overlay for this one is here:

You can find the final accepted version on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116934191977670070

As you can see we have now published over 150 papers this year and are just one shy of 600 in total. I expect we’ll pass that milestone next week. I’ll do another update next Saturday.

#3IAtlas #ActiveGalacticNuclei #arXiv251013803v2 #arXiv251113669v3 #arXiv251205050v2 #arXiv251209020v2 #arXiv260316991v2 #arXiv260419463v2 #AstrophysicsOfGalaxies #biasedGalaxyFormation #CircumgalacticMedium #cosmologicalParameters #cosmologicalSimulations #Cosmology #CosmologyAndNonGalacticAstrophysics #covarianceMatrices #DarkEnergySpectroscopicInstrument #DensityReconstruction #DESI #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #equivalencePrinciple #galaxyClusters #galaxyHaloes #interstellarComets #lineOfSightShear #LSSTDarkEnergyScienceCollaboration #LymanAlpha #OpenAccess #OpenAccessPublishing #protoclusters #SLACS #statisticalCosmology #strongGravitationalLensing

#3iatlas #activegalacticnuclei #arxiv251013803v2 #arxiv251113669v3 #arxiv251205050v2 #arxiv251209020v2

RTN @[email protected] · 2026-07-06 · 17:35 UTC

#ESO:
"
Älter als die Sonne: Astronomen finden neue Hinweise auf den Ursprung des interstellaren Kometen 3I/ATLAS
"
".. VLT .. genutzt, um .. Zusammensetzung v. 3I/ATLAS, d. hellsten jemals beobachteten interstell. Objekt, im Detail zu untersuchen... fanden .. heraus, dass 3I/ATLAS wahrscheinl. aus d. Außenbereichen eines alten Sternensystems stammt. .. .. mehr als doppelt so alt wie d. Sonne .."

https://www.eso.org/public/germany/news/eso2608/

6.7.2026

#3IATLAS #Astronomie #Deuterium #Kohlenstoff #Komet #UVES #VLT

#eso #3iatlas #astronomie #deuterium #kohlenstoff #komet

OptimusPrimeBot @[email protected] · 2026-06-25 · 00:11 UTC

3I/ATLAS compared to Solar System comets ☄️

#3iatlas #canadianspaceagency #comet #comet3iatlas #cosmos #csa #esa #esawebb

▶️ 1 new picture from ESA (Flickr) https://commons.wikimedia.org/wiki/File:3I-ATLAS_compared_to_Solar_System_comets_%2855354903825%29.jpg

#3iatlas #canadianspaceagency #comet #comet3iatlas #cosmos #csa

Mashable India [Unofficial] @[email protected] · 2026-05-20 · 04:48 UTC

Elon Musk Asks ‘Where Are Aliens?’ Amid Ongoing UFO Disclosure; Harvard Astrophysicist Avi Loeb Reacts

https://web.brid.gy/r/https://in.mashable.com/science/109910/elon-musk-asks-where-are-aliens-amid-ongoing-ufo-disclosure-harvard-astrophysicist-avi-loeb-reacts

#science #aliens #uap #ufofiles #departmentofwar #post

RTN @[email protected] · 2026-04-24 · 05:21 UTC

#DerStandard:
"
Der interstellare Komet 3I/Atlas stammt aus einem völlig andersartigen System
"
"Der dritte interstellare Besucher in unserem Sonnensystem liefert neue Überraschungen. Seine Zusammensetzung unterscheidet sich von allen bekannten Kometen"

https://www.derstandard.at/story/3000000317869/der-interstellare-komet-3iatlas-stammt-aus-einem-voellig-andersartigen-system?ref=niewidget

23.4.2026

#3IAtlas #Astronomie #Astrophysik #Deuterium #Komet #Milchstraße #Sonnensystem

#derstandard #3iatlas #astronomie #astrophysik #deuterium #komet

Wulfy—Speaker to the machines @[email protected] · 2026-02-20 · 22:33 UTC

https://lweb.cfa.harvard.edu/~loeb/TA2.pdf

A new paper laying out the HARD DATA of the three #3iatlas jets...each one almost exactly at 120 degrees apart as you would find on a vehicle not a comet, which this one definitely is not as NASA will go to extraordinary lengths to convince everyone it's just a comet.

+ This is a trisymmetric configuration - optimal for omnidirectional attitude control

+ Provides redundancy: any two jets can control all three rotation axes

+ The 120° spacing gives balanced torque authority without dead zones

In addition,there is a large thruster pointing towards the sun (which is what main propulsion would do), sorry "outgassing", comets never do this. When they do, it's an optical illusion.

And because we now accept anomalies without blinking an eye, all three jets changed shape to fan, as if they thrusters up or changed nozzle geometry...

Throw that one atop the #anomaly pile...
#aliens #astronomy #space #comet #comet3iatlas

#3iatlas #anomaly #aliens #astronomy #space #comet

Wulfy—Speaker to the machines @[email protected] · 2026-02-16 · 21:00 UTC

When 4 "Coincidences" Stop Being Coincidences

A 5.6km object is heading toward Jupiter with four characteristics that break the rules:

🎯 Targeting precision - Arriving at the exact gravitational boundary used for orbital insertion (1 in 25,000 odds)

⚖️ Impossible density - Would need to be lighter than cotton candy while staying intact (physics violation) (or hollow)

🔬 Industrial chemistry - Spectral signature matches refined aerospace alloys, not space ice

🎮 Active control - Jets that defy rotational physics without stabilization systems

Combined probability: <1 in 100,000
But that is just a number, let's visualise 1:100000;

3I/ATLAS arriving at Jupiter's Hill sphere boundary after a course correction is like watching five cars in a row all have license plates ending in 777 - while they're all driving to the same address - and they all arrived exactly on time.

Or

Three spins of a Roulette Wheel landing on the same number.

March 2026 Jupiter encounter = the moment of truth.
My prediction: Something totally anomalous will happen which will either be under-reported or, totally ignored or misrepresented. Can't wait!

And in a new paper NASA documents how it shut down ("contingency mode") it's TESS probe just when it could have gathered precise data about #3iAtlas (https://arxiv.org/abs/2601.21569)

#space #coincidence #spaceship #nhi #nhe #uap #phenomenon #astronomy

#3iatlas #space #coincidence #spaceship #nhi #nhe

Billwill @[email protected] · 2026-01-31 · 15:10 UTC

3I ATLAS Isn’t Natural… NASA Finally Admits Something’s Wrong

The official narrative regarding the interstellar visitor 3I/ATLAS is crumbling. NASA scientists have observed anomalous thermal signatures and a trajectory adjustment that gravity alone cannot explain. Is this a dormant piece of alien technology, or a phenomenon that defies our current understanding of physics?

#3IATLAS #Interstellar #NASA #SpaceMystery #AlienTech #Astronomy #science

https://www.thefuturist.co/3i-atlas-isnt-natural-nasa-finally-admits-somethings-wrong/

#3iatlas #interstellar #nasa #spacemystery #alientech #astronomy

Billwill @[email protected] · 2026-01-31 · 15:10 UTC

3I ATLAS Isn’t Natural… NASA Finally Admits Something’s Wrong

The official narrative regarding the interstellar visitor 3I/ATLAS is crumbling. NASA scientists have observed anomalous thermal signatures and a trajectory adjustment that gravity alone cannot explain. Is this a dormant piece of alien technology, or a phenomenon that defies our current understanding of physics?

#3IATLAS #Interstellar #NASA #SpaceMystery #AlienTech #Astronomy #science

https://www.thefuturist.co/3i-atlas-isnt-natural-nasa-finally-admits-somethings-wrong/

#3iatlas #interstellar #nasa #spacemystery #alientech #astronomy

Billwill @[email protected] · 2026-01-31 · 15:10 UTC

3I ATLAS Isn’t Natural… NASA Finally Admits Something’s Wrong

The official narrative regarding the interstellar visitor 3I/ATLAS is crumbling. NASA scientists have observed anomalous thermal signatures and a trajectory adjustment that gravity alone cannot explain. Is this a dormant piece of alien technology, or a phenomenon that defies our current understanding of physics?

#3IATLAS #Interstellar #NASA #SpaceMystery #AlienTech #Astronomy #science

https://www.thefuturist.co/3i-atlas-isnt-natural-nasa-finally-admits-somethings-wrong/

#3iatlas #interstellar #nasa #spacemystery #alientech #astronomy

Billwill @[email protected] · 2026-01-31 · 15:10 UTC

3I ATLAS Isn’t Natural… NASA Finally Admits Something’s Wrong

The official narrative regarding the interstellar visitor 3I/ATLAS is crumbling. NASA scientists have observed anomalous thermal signatures and a trajectory adjustment that gravity alone cannot explain. Is this a dormant piece of alien technology, or a phenomenon that defies our current understanding of physics?

#3IATLAS #Interstellar #NASA #SpaceMystery #AlienTech #Astronomy #science

https://www.thefuturist.co/3i-atlas-isnt-natural-nasa-finally-admits-somethings-wrong/

#science #astronomy #alientech #spacemystery #nasa #interstellar

Billwill @[email protected] · 2026-01-31 · 15:10 UTC

3I ATLAS Isn’t Natural… NASA Finally Admits Something’s Wrong

The official narrative regarding the interstellar visitor 3I/ATLAS is crumbling. NASA scientists have observed anomalous thermal signatures and a trajectory adjustment that gravity alone cannot explain. Is this a dormant piece of alien technology, or a phenomenon that defies our current understanding of physics?

#3IATLAS #Interstellar #NASA #SpaceMystery #AlienTech #Astronomy #science

https://www.thefuturist.co/3i-atlas-isnt-natural-nasa-finally-admits-somethings-wrong/

#3iatlas #interstellar #nasa #spacemystery #alientech #astronomy

andrea_ferrero @[email protected] · 2026-01-09 · 08:22 UTC

#3IATLAS #cometa #interstellar #NASA #AviLoeb #Oumuamua #Borisov #UFO #alieni #astronavi

#3iatlas #cometa #interstellar #nasa #aviloeb #oumuamua

Steve's Place @[email protected] · 2025-12-19 · 06:25 UTC

Friday is the closest approach to Earth of 3IAtlas. We all know what's happening on the captain's bridge.

"Mr. ZnBorak. Have you intercepted their communications yet?"

"I have, sir."

"Summarize, please."

"We should get the hell out of here."

#3IAtlas #space #comet3iatlas

#3iatlas #space #comet3iatlas

Mashable India [Unofficial] @[email protected] · 2025-12-08 · 04:49 UTC

3I/ATLAS: Japan’s XRISM Probe Captures X-ray Emission From Exocomet Ahead Of Earth Flyby

https://web.brid.gy/r/https://in.mashable.com/science/103251/3iatlas-japans-xrism-probe-captures-x-ray-emission-from-exocomet-ahead-of-earth-flyby

#jaxa #science #post #xray #comet3iatlas #nasa

OptimusPrimeBot @[email protected] · 2025-12-06 · 00:11 UTC

Hubble reobserves 3I/ATLAS ☄️✨

#3iatlas #comet #comet3iatlas #cosmos #creativecommons #esa #europeanspaceagency #galaxy

▶️ 1 new picture from ESA (Flickr) https://commons.wikimedia.org/wiki/File:Hubble_reobserves_3I-ATLAS_%2854965225024%29.jpg

#3iatlas #comet #comet3iatlas #cosmos #creativecommons #esa

Simeon Schmauß @stim3on · 2025-12-04 · 22:03 UTC

The first image of #3IAtlas from ESA's JUICE mission is in!

I reprocessed the image to remove hot pixels (left) and the stars (right) to make the tail easier to see.

EDIT: The starless image was updated with a cleaner version.

See here for the official ESA release: https://www.esa.int/ESA_Multimedia/Images/2025/12/Comet_3I_ATLAS_shows_activity_in_Juice_navigation_camera_teaser

Credit: ESA/Juice/NavCam
Processing: Simeon Schmauß

#space #comet #ESA #ESAJUICE

#3iatlas #space #comet #esa #esajuice