#3iatlas — Public Fediverse posts

2026-09-14 00:00:00 UTC (Delta: 2026-09-13)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.33 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 224 days

🌎 Relative to Earth
- Distance (km): 1,744,996,418.55 km (+2,712,959.07 km)
- Distance (AU): 11.66 (+0.02)
- Light travel time: 1 h 37 min 0.68 s (+9.05 s)

#3IAtlas #InterstellarObject

2026-09-13 00:00:00 UTC (Delta: 2026-09-12)

INTERSTELLAR VISITOR: 3I/ATLAS
- Barycentric speed: 59.33 km/s (-0.00 km/s)
- Crossing Uranus's orbit in: 225 days

🌎 Relative to Earth
- Distance (km): 1,742,283,459.49 km (+2,733,599.83 km)
- Distance (AU): 11.65 (+0.02)
- Light travel time: 1 h 36 min 51.63 s (+9.12 s)

#3IAtlas #InterstellarObject

Specifically, 3I/Atlas contains 30 times more heavy hydrogen than comets in our solar system. It must therefore have formed in an extremely cold environment outside our solar system.
#JamesWebb #3IAtlas #InterstellarObjects #Space #SpaceExploration

Scientists are discussing the possibility that 3I/Atlas could be 2–3 times as old as our solar system. For the first time, we have now discovered chemical traces from this era of our galaxy.
#JamesWebb #3IAtlas #InterstellarObjects #Space #SpaceExploration

Scientists are discussing the possibility that 3I/Atlas could be 2–3 times as old as our solar system. For the first time, we have now discovered chemical traces from this era of our galaxy.
#JamesWebb #3IAtlas #InterstellarObjects #Space #SpaceExploration

Specifically, 3I/Atlas contains 30 times more heavy hydrogen than comets in our solar system. It must therefore have formed in an extremely cold environment outside our solar system.
#JamesWebb #3IAtlas #InterstellarObjects #Space #SpaceExploration

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.

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.

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.

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.

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 12the 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

Noted:
3I/ATLAS behavior consistent with the previously published murmuration framework. https://doi.org/10.5281/zenodo.18420169 #InterstellarObjects #Astrophysics #3IATLAS #Oumuamua #SETI @Astrodon @seti-institute @Cosmology @astrodynamics

Noted:
3I/ATLAS behavior consistent with the previously published murmuration framework. https://doi.org/10.5281/zenodo.18420169 #InterstellarObjects #Astrophysics #3IATLAS #Oumuamua #SETI @Astrodon @seti-institute @Cosmology @astrodynamics

Noted:
3I/ATLAS behavior consistent with the previously published murmuration framework. https://doi.org/10.5281/zenodo.18420169 #InterstellarObjects #Astrophysics #3IATLAS #Oumuamua #SETI @Astrodon @seti-institute @Cosmology @astrodynamics

Noted:
3I/ATLAS behavior consistent with the previously published murmuration framework. https://doi.org/10.5281/zenodo.18420169 #InterstellarObjects #Astrophysics #3IATLAS #Oumuamua #SETI @Astrodon @seti-institute @Cosmology @astrodynamics

Are interstellar objects data or divine messengers? Explore how science, prophecy, and history converge with 3I/ATLAS and beyond. #Oumuamua #Borisov #3IATLAS #InterstellarObjects #CosmicMessengers #AstronomyAndSpirituality #AncientWisdom #ISO5 #BetterLiving
https://spiritulality.stayingalive.in/inspiring-harmony/karmic-messaging-or-scienti.html

Are interstellar objects data or divine messengers? Explore how science, prophecy, and history converge with 3I/ATLAS and beyond. #Oumuamua #Borisov #3IATLAS #InterstellarObjects #CosmicMessengers #AstronomyAndSpirituality #AncientWisdom #ISO5 #BetterLiving
https://spiritulality.stayingalive.in/inspiring-harmony/karmic-messaging-or-scienti.html

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

How the buzz over an ‘alien’ interstellar comet went viral
Is an interstellar spacecraft zooming through our solar system? That’s the big question for fans of unidentified flying objects — and for a researcher at the University of Washington who analyzed the speculation over the interstellar com
https://cosmiclog.com/2025/12/06/how-the-buzz-over-an-alien-interstellar-comet-went-viral/
#GeekWire #3IATLAS #A11pl3Z #Aliens #InterstellarObjects #SocialMedia #Space #UniversityOfWashington

How the buzz over an ‘alien’ interstellar comet went viral
Is an interstellar spacecraft zooming through our solar system? That’s the big question for fans of unidentified flying objects — and for a researcher at the University of Washington who analyzed the speculation over the interstellar com
https://cosmiclog.com/2025/12/06/how-the-buzz-over-an-alien-interstellar-comet-went-viral/
#GeekWire #3IATLAS #A11pl3Z #Aliens #InterstellarObjects #SocialMedia #Space #UniversityOfWashington

How the buzz over an ‘alien’ interstellar comet went viral
Is an interstellar spacecraft zooming through our solar system? That’s the big question for fans of unidentified flying objects — and for a researcher at the University of Washington who analyzed the speculation over the interstellar com
https://cosmiclog.com/2025/12/06/how-the-buzz-over-an-alien-interstellar-comet-went-viral/
#GeekWire #3IATLAS #A11pl3Z #Aliens #InterstellarObjects #SocialMedia #Space #UniversityOfWashington

How the buzz over an ‘alien’ interstellar comet went viral
Is an interstellar spacecraft zooming through our solar system? That’s the big question for fans of unidentified flying objects — and for a researcher at the University of Washington who analyzed the speculation over the interstellar com
https://cosmiclog.com/2025/12/06/how-the-buzz-over-an-alien-interstellar-comet-went-viral/
#GeekWire #3IATLAS #A11pl3Z #Aliens #InterstellarObjects #SocialMedia #Space #UniversityOfWashington

How the buzz over an ‘alien’ interstellar comet went viral
Is an interstellar spacecraft zooming through our solar system? That’s the big question for fans of unidentified flying objects — and for a researcher at the University of Washington who analyzed the speculation over the interstellar com
https://cosmiclog.com/2025/12/06/how-the-buzz-over-an-alien-interstellar-comet-went-viral/
#GeekWire #3IATLAS #A11pl3Z #Aliens #InterstellarObjects #SocialMedia #Space #UniversityOfWashington

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