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Today: Scientists Monitor Comet 3I/ATLAS After Sudden Increase in Brightness and Intense Blue Color That Defies Known Explanations, Says Harvard Professor

Written by Bruno Teles
Published on 30/10/2025 at 13:20
Updated on 30/10/2025 at 15:00
Cientistas investigam o cometa 3I/ATLAS, cujo aumento súbito de brilho e cor azul intensa desafia modelos conhecidos. O professor de Harvard analisa o fenômeno que pode redefinir teorias cometárias.
Cientistas investigam o cometa 3I/ATLAS, cujo aumento súbito de brilho e cor azul intensa desafia modelos conhecidos. O professor de Harvard analisa o fenômeno que pode redefinir teorias cometárias.
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Comet 3I/ATLAS Exhibits Sudden Increase in Brightness and Intense Blue Color, Phenomenon That Surprises Astronomers and Raises New Hypotheses About Its Interstellar Origin

The comet 3I/ATLAS is at the center of an international scientific race. In just a few days, it has displayed a brightening and an unusual blue coloration, behavior that does not fit known models of cometary activity. The phenomenon has been recorded by several solar observation spacecraft, revealing new and intriguing brightness patterns.

According to preliminary analyses, the interstellar object discovered in July intensified its light as it approached the Sun. Normally, this type of behavior indicates the release of gases or fragmentation of the surface. However, the intensity and color observed suggest something more complex, involving atypical gaseous emissions or physical properties not yet understood.

The Brightness Escalation Observed in Recent Weeks

The images show a comparison between the frames of comet 3I/ATLAS and a nearby star, used to calibrate and accurately measure the actual brightness of the object. To the right are the combined stacks from different space instruments, all aligned in the same orientation, indicating the direction of the Sun and the heliocentric motion of the comet.
The images show a comparison between the frames of comet 3I/ATLAS and a nearby star, used to calibrate and accurately measure the actual brightness of the object. To the right are the combined stacks from different space instruments, all aligned in the same orientation, indicating the direction of the Sun and the heliocentric motion of the comet.

Instruments on board the STEREO-A, SOHO, and GOES-19 probes detected a sudden variation in the photometry of the comet during September and October 2025.

According to researchers, 3I/ATLAS is expected to emerge from the solar conjunction brighter than before, possibly due to a visible emission of gases in high quantities.

In addition to the intensity, the bluish coloration has drawn attention.

The photometry from the images shows that the comet reflects light differently than cosmic dust patterns, indicating that a significant portion of the brightness may come from excited gases near perihelion, the closest point to the Sun in its orbit.

An Enigma That Challenges Known Explanations

Professor Avi Loeb from Harvard University described the blue hue of 3I/ATLAS as “very surprising.”

According to him, celestial bodies covered in dust tend to reflect reddish tones, as their surfaces are cooler than the solar photosphere.

The behavior of the comet, therefore, challenges the thermal and spectral expectations of cometary physics.

Loeb proposed to include the blue color as a ninth anomaly in the list of inexplicable properties of the object, which already exhibits an extremely aligned trajectory with the orbital plane of the planets and a tail oriented towards the Sun.

This phenomenon cannot be explained solely by observational geometry.

Hypotheses and Limits of Current Observations

Scientists have not yet confirmed the exact nature of the brightness increase.

Among the hypotheses are internal chemical reactions, sudden release of volatile ice, or reflections caused by exposed fragments during the close passage to the Sun.

None of these scenarios, however, fully explain the detected blue color.

Continuous analysis is expected to intensify in the coming weeks, as the comet moves away from the solar region and becomes visible again to ground telescopes.

New measurements are anticipated to help determine whether 3I/ATLAS is merely an atypical interstellar visitor or something that will require revision of current comet formation theories.

The comet 3I/ATLAS remains under close observation and continues to intrigue the scientific community.

If future observations confirm the persistence of the blue color and the anomalous increase in brightness, the case could become one of the most enigmatic records of modern astronomy.

Do you believe that 3I/ATLAS is just an unusual comet, or could there be something more behind its behavior?

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Ricardo Garcia
Ricardo Garcia
06/11/2025 09:25

Por favor não levantei polêmicas baseado em textos Bíblicos. Não use um pedaço de texto para criar um contexto.
Só para informação:
“A COR DO ABSINTO É VERDE DEVIDO A COR DO SEUS INGREDIENTES, QUE SÃO ERVAS VERDES”. QUANDO MUITO DIFERENTE DISSO, É TRANSPARENTE.

Natan
Natan
03/11/2025 04:17

O terceiro anjo tocou a sua trombeta e uma grande estrela, que queimava como tocha, caiu do céu sobre um terço dos rios e das fontes de águas; o nome da estrela é Absinto. Um terço das águas tornou‑se amargo, e muitos morreram por causa das águas, pois se tornaram amargas. Apocalipse 8:11
Para quem não sabe, a cor do absinto é azul.

Loures
Loures
Em resposta a  Natan
03/11/2025 14:22

Boa piada!

Ueldon
Ueldon
01/11/2025 22:31

Pelo que (vemos) aqui, e eu acredito que sim, há muito mais além por trás desse cometa atípico.

Bruno Teles

Falo sobre tecnologia, inovação, petróleo e gás. Atualizo diariamente sobre oportunidades no mercado brasileiro. Com mais de 7.000 artigos publicados nos sites CPG, Naval Porto Estaleiro, Mineração Brasil e Obras Construção Civil. Sugestão de pauta? Manda no brunotelesredator@gmail.com

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