#3iatlas — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #3iatlas, aggregated by home.social.
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2026-09-06 00:00:00 UTC (Delta: 2026-09-05)
INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.36 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 232 days🌎 Relative to Earth
- Distance (km): 1,722,676,666.18 km (+2,896,760.51 km)
- Distance (AU): 11.52 (+0.02)
- Light travel time: 1 h 35 min 46.23 s (+9.66 s) -
2026-09-06 00:00:00 UTC (Delta: 2026-09-05)
INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.36 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 232 days🌎 Relative to Earth
- Distance (km): 1,722,676,666.18 km (+2,896,760.51 km)
- Distance (AU): 11.52 (+0.02)
- Light travel time: 1 h 35 min 46.23 s (+9.66 s) -
2026-09-06 00:00:00 UTC (Delta: 2026-09-05)
INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.36 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 232 days🌎 Relative to Earth
- Distance (km): 1,722,676,666.18 km (+2,896,760.51 km)
- Distance (AU): 11.52 (+0.02)
- Light travel time: 1 h 35 min 46.23 s (+9.66 s) -
2026-09-06 00:00:00 UTC (Delta: 2026-09-05)
INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.36 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 232 days🌎 Relative to Earth
- Distance (km): 1,722,676,666.18 km (+2,896,760.51 km)
- Distance (AU): 11.52 (+0.02)
- Light travel time: 1 h 35 min 46.23 s (+9.66 s) -
2026-09-06 00:00:00 UTC (Delta: 2026-09-05)
INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.36 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 232 days🌎 Relative to Earth
- Distance (km): 1,722,676,666.18 km (+2,896,760.51 km)
- Distance (AU): 11.52 (+0.02)
- Light travel time: 1 h 35 min 46.23 s (+9.66 s) -
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) -
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) -
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) -
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) -
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) -
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) -
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) -
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) -
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) -
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) -
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 -
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 -
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 -
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 -
Weekly Update from the Open Journal of Astrophysics 13/06/2026
It’s Saturday again so it’s time for another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further three papers, bringing the number in Volume 9 (2026) to 122 and the total so far published by OJAp up to 570.
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 Thursday 11th June, is “Dancing Streams In Merging Halos: Stellar Streams in a MW–LMC-like merger” by (all based in the USA): Sachi Weerasooriya (Carnegie Observatories), Tjitske Starkenburg (Northwestern U.), Emily C. Cunningham (Columbia U.) & Kathryn V. Johnston (Flatiron Institute). This article explores how galaxy mergers, like the Milky Way-Large Magellanic Cloud merger, significantly alter the properties and structures of stellar streams, challenging the recovery of their initial orbits. It is in the folder marked Astrophysics of Galaxies.
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/116730200889106529
The second paper for this week, also published on Thursday 11th June but in the folder Cosmology and Nongalactic Astrophysics is “X-SORTER (X-ray Survey Of meRging clusTErs in Redmapper): X-ray and Spectroscopic Characterization of 12 Optically Selected Galaxy Cluster Merger Candidates” by Christopher Hopp, David Wittman, Rodrigo Stancioli, Zhuoran Gao & Faik Bouhrik (UC Davis) and Scott Adler (Rochester), all based in the USA. The X-SORTER program identifies merging galaxy clusters to study dark matter interactions, using optical indicators and X-ray observations. This method efficiently identifies active clusters suitable for detailed dark matter studies.
The overlay for this one 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/116730279994960097
The third and final paper of the week, published on Friday 12th June in the folder Earth and Planetary Astrophysics, is “JCMT Constraints on the Early-Time HCN and CO Emission and HCN Temporal Evolution of 3I/ATLAS” by Jason T. Hinkle (U. Illinois, USA) and 6 others based in the USA and Chile. This article presents observations of the third Interstellar Object, 3I/ATLAS, providing early sub-mm constraints on its activity. The findings suggest a steeper production rate slope than typical Solar System comets.
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/116735805179724489
And that concludes this week’s update. It has been a slow week on the publishing front, but the main reason is that we have a big backlog of papers accepted but waiting for the authors to put their final versions on arXiv and we can’t do anything about that! I’ll do another update next Saturday.
#3IAtlas #arXiv250514792v2 #arXiv251202106v3 #arXiv260305596v4 #astrochemistry #AstrophysicsOfGalaxies #CO #cosmologicalSimulations #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #EarthAndPlanetaryAstrophysics #galaxyClusters #GalaxyHalos #galaxyMergers #HCN #HighEnergyAstrophysicalPhenomena #interstellarObjects #OpenAccess #OpenAccessPublishing #spectroscopy #StellarStreams #XSORTER -
Multiple #fireballs falling on earth right now are very likely the "debris field" of #3iAtlas
Earth is currently passing through the area of the plane of ecliptic that 3iAtlas passed through.
#NASA of course is supporting all the other 50 #anomalies about that "#comet" by outright lying that "we usually get this many meteors around this time" - the fireballs are not part of any #meteorshower this is #Anomalous
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3I/ATLAS üç gün sonra dünyaya en yakın konumunda olacak!: Güneş Sistemimizin dışından gelen ve "yıldızlararası" olarak adlandırılan 3I/ATLAS kuyruklu yıldızı, 19 Aralık'ta Dünya'ya en çok yaklaştığı noktadan geçecek. Bilim insanları, bu güvenli geçiş sayesinde, başka yıldızların etrafındaki gezegenlerin nasıl oluştuğuna dair önemli ipuçları yakalamayı hedefliyor. Yıldızlararası kuyruklu… https://www.eshahaber.com.tr/haber/3?-atlas-uc-gun-sonra-dunyaya-en-yakin-konumunda-olacak-279896.html&utm_source=dlvr.it&utm_medium=mastodon EshaHaber.com.tr #3IATLAS #Yıldızlararası #KuyrukluYıldız #Astronomi #NASA
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NASA doğruladı! Renk değiştirmişti: 3I ATLAS, şimdi de olağan dışı hızlandı!: Astronomlar, Güneş’in arkasında hareket eden yıldızlararası cisim 3I/ATLAS’ta olağan dışı bir değişim gözlemledi. NASA ve Avrupa Uzay Ajansı’na (ESA) bağlı gözlemevlerinden elde edilen veriler, cismin bir kez daha renk değiştirmesinin ardından yerçekimi dışı bir hızlanma sergilediğini ortaya koydu.
3I/ATLAS, Temmuz ayında… https://www.eshahaber.com.tr/haber/nasa-dogruladi-renk-degistirmisti-3?-atlas-simdi-de-olagan-disi-hizlandi-269641.html&utm_source=dlvr.it&utm_medium=mastodon EshaHaber.com.tr #NASA #Astronomi #Uzay #GüneşSistemi #3IATLAS
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#DeStandard:
"
Komet 3I/Atlas wird plötzlich grün, Harvard-Forscher glaubt an Alien-TechnologieDer Österreicher Michael Jäger entdeckte die Verfärbung des außergewöhnlichen interstellaren Kometen als Erster. Die Nasa weist die Spekulationen Avi Loebs zurück
"
https://www.derstandard.at/story/3000000287465/komet-3iatlas-wird-ploetzlich-gruen-harvard-forscher-glaubt-an-alien-technologie12.9.2025