#3iatlas — Public Fediverse posts

2026-09-10 00:00:00 UTC (Delta: 2026-09-09)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 228 days

🌎 Relative to Earth
- Distance (km): 1,734,017,954.97 km (+2,799,666.50 km)
- Distance (AU): 11.59 (+0.02)
- Light travel time: 1 h 36 min 24.06 s (+9.34 s)

#3IAtlas #InterstellarObject

2026-09-09 00:00:00 UTC (Delta: 2026-09-08)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 229 days

🌎 Relative to Earth
- Distance (km): 1,731,218,288.47 km (+2,823,021.13 km)
- Distance (AU): 11.57 (+0.02)
- Light travel time: 1 h 36 min 14.72 s (+9.42 s)

#3IAtlas #InterstellarObject

here is the corrected thread:

bsky.app/profile/sill...

#TruthWarriors #3I/ATLAS

RE: https://bsky.app/profile/did:plc:7nguzszlvpdpdmtc47zp22ur/post/3muzsugff7s2y

here is the corrected thread:

bsky.app/profile/sill...

#TruthWarriors #3I/ATLAS

RE: https://bsky.app/profile/did:plc:7nguzszlvpdpdmtc47zp22ur/post/3muzsugff7s2y

here is the corrected thread:

bsky.app/profile/sill...

#TruthWarriors #3I/ATLAS

RE: https://bsky.app/profile/did:plc:7nguzszlvpdpdmtc47zp22ur/post/3muzsugff7s2y

Concerning 3I/ATLAS. a conversation with AI.

#TruthWarriors #3I/ATLAS:

ME: "in my view, it is a craft. a huge craft. it makes sense that it uses what is seen as out-gassing as a way of maneuvering. it makes sense that crafts from other worlds would include using the physical matter.

1/

Concerning 3I/ATLAS. a conversation with AI.

#TruthWarriors #3I/ATLAS:

ME: "in my view, it is a craft. a huge craft. it makes sense that it uses what is seen as out-gassing as a way of maneuvering. it makes sense that crafts from other worlds would include using the physical matter.

1/

Concerning 3I/ATLAS. a conversation with AI.

#TruthWarriors #3I/ATLAS:

ME: "in my view, it is a craft. a huge craft. it makes sense that it uses what is seen as out-gassing as a way of maneuvering. it makes sense that crafts from other worlds would include using the physical matter.

1/

2026-09-08 00:00:00 UTC (Delta: 2026-09-07)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 230 days

🌎 Relative to Earth
- Distance (km): 1,728,395,267.34 km (+2,847,006.12 km)
- Distance (AU): 11.55 (+0.02)
- Light travel time: 1 h 36 min 5.31 s (+9.50 s)

#3IAtlas #InterstellarObject

2026-09-08 00:00:00 UTC (Delta: 2026-09-07)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 230 days

🌎 Relative to Earth
- Distance (km): 1,728,395,267.34 km (+2,847,006.12 km)
- Distance (AU): 11.55 (+0.02)
- Light travel time: 1 h 36 min 5.31 s (+9.50 s)

#3IAtlas #InterstellarObject

2026-09-08 00:00:00 UTC (Delta: 2026-09-07)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 230 days

🌎 Relative to Earth
- Distance (km): 1,728,395,267.34 km (+2,847,006.12 km)
- Distance (AU): 11.55 (+0.02)
- Light travel time: 1 h 36 min 5.31 s (+9.50 s)

#3IAtlas #InterstellarObject

2026-09-08 00:00:00 UTC (Delta: 2026-09-07)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 230 days

🌎 Relative to Earth
- Distance (km): 1,728,395,267.34 km (+2,847,006.12 km)
- Distance (AU): 11.55 (+0.02)
- Light travel time: 1 h 36 min 5.31 s (+9.50 s)

#3IAtlas #InterstellarObject

2026-09-08 00:00:00 UTC (Delta: 2026-09-07)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.35 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 230 days

🌎 Relative to Earth
- Distance (km): 1,728,395,267.34 km (+2,847,006.12 km)
- Distance (AU): 11.55 (+0.02)
- Light travel time: 1 h 36 min 5.31 s (+9.50 s)

#3IAtlas #InterstellarObject

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.

#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

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

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.

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

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

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

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

3I/ATLAS: Indian Scientists Capture Image Of Interstellar Comet From Mount Abu; Here’s What They Found

https://web.brid.gy/r/https://in.mashable.com/science/102688/3iatlas-indian-scientists-capture-image-of-interstellar-comet-from-mount-abu-heres-what-they-found