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20 Sept 2025 #3iatlas #earth #astronomy
Apparent magnitude (brightness) measurements of 3I/ATLAS reveal a sharp ~20x increase in brightness since around September 7th, a massive unexpected jump from this mysterious interstellar visitor. Is our instrumentation faulty, or has its complex dusty plasma coma really grown that much since reaching 2 astronomical units (AU) of the Sun? Geophysicist Stefan Burns reports....

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3I/ATLAS video playlist by Stefan Burns:
• What is 3I/ATLAS?

Research:
2010 - Diagnostics in dusty C–H–O plasmas with diamond and graphitic nanoparticle generation https://doi.org/10.1088/0963-0252/19/...
2015 - A permanent, asymmetric dust cloud around the Moon https://doi.org/10.1038/nature14479
2016 - Optical diagnostics of dusty plasmas during nanoparticle growth https://doi.org/10.1088/0741-3335/59/...
2017 - Ceres Interaction with the Solar Wind https://doi.org/10.1002/2016GL072375
2024 - Interstellar meteors from the tidal disruption of rocky planets on eccentric orbits around M dwarfs https://doi.org/10.1051/0004-6361/202...
2025 - JWST detection of a carbon dioxide dominated gas coma surrounding interstellar object 3I-ATLAS https://doi.org/10.5281/zenodo.16941948
2025 - Spectroscopic Characterization of Interstellar Object 3I-ATLAS Water Ice in the Coma https://doi.org/10.48550/arXiv.2507.1...
2025 - SPHEREx Discovery of Strong Water Ice Absorption and an Extended Carbon Dioxide Coma in 3I-ATLAS https://www.astronomerstelegram.org/?...
2025 - Temporal Evolution of the Third Interstellar Comet 3I-ATLAS Spin, Color, Spectra and Dust Activity https://arxiv.org/html/2508.00808v1
2025 - VLT observations of interstellar comet 3I-ATLAS II From quiescence to glow Dramatic rise of Ni I emission and incipient CN outgassing at large heliocentric distances https://arxiv.org/abs/2508.18382
2025 - Gemini South 3I/ATLAS imagery August 27 2025: https://www.astronomerstelegram.org/?...
2025 - Extreme Negative Polarisation of New Interstellar Comet 3I/ATLAS https://doi.org/10.48550/arXiv.2509.0...
2025 - Precovery Observations of 3I/ATLAS from TESS Suggest Possible Distant Activity https://doi.org/10.3847/2041-8213/adfd4d

Data and Credit:
NASA
ESA
Stellarium
Comets Group on 3I/ATLAS: https://groups.io/g/comets-ml/topic/3...
COBS 3I/ATLAS Light curve: https://cobs.si/comet/2643/
The Sky Live (3I/ATLAS Orbit Viewer): https://theskylive.com/3dsolarsystem?...
]3I/ATLAS Imagery September 7th: https://www.spaceweather.com/archive....
3I/ATLAS Imagery September 17th: https://spaceweather.com/archive.php?...
3I/ATLAS Tracker: https://atlascomet.com/
Cloudy Nights Forum 3I/ATLAS Discussion: https://www.cloudynights.com/topic/96...
Credit: Gerald Rhemann and Michael Jäger

#3iatlas #earth #astronomy #geophysics #spaceweather #spirituality #space #astronomy #NASA #solaractivity #geomagneticstorm #aurora #solarmaximum #solarcycle25 #geology #science #earthscience #volcanoes #earthquakes #wx #swx #schumannresonance

Stefan Burns

https://www.youtube.com/watch?v=MCZE5W5MO9M

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