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Harvard scientist doubles down on 3I/ATLAS claims; comet underwent ‘sudden changes'

Harvard astrophysicist Avi Loeb further speculates and comments on a series of unexpected behaviors exhibited by 3I/ATLAS

Published on: Nov 1, 2025, 04:48:09 IST
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Harvard astrophysicist Avi Loeb on Thursday highlighted a series of unexpected behaviours displayed by the interstellar object 3I/ATLAS. He told Newsmax that it had undergone a sudden, dramatic brightening and an unusual shift to a bluer hue, a phenomenon rarely seen in comets entering the Solar System.

Harvard Professor of Science Avi Loeb talks about alleged alien, UFO sightings
Harvard Professor of Science Avi Loeb talks about alleged alien, UFO sightings

He raised his observations during an interview with Newsmax, where he highlighted what he called “very surprising” changes in the object’s behaviour and urged more transparency from NASA’s data release.

Also Read: 3I/ATLAS row: 5 big claims Avi Loeb has made about the Manhattan-size comet

What is unusual about 3I/ATLAS?

Loeb told Newsmax the object has brightened far more quickly than any previously observed comet, saying: “We have a report that the object got much brighter than expected, much brighter than any previous comet from the solar system did as it approached the Sun’s perihelion.”

He further noted that 3I/ATLAS appears blue in colour. This is a divergence from the reddish or dusty hue of typical comets. “The colour of the object is blue, bluer than the Sun. And that’s very surprising, because usually when there is dust around an object, it should make it red.”

Loeb also pointed out that the object passed unusually close to Mars earlier this month, photos of which are yet to be released by NASA.

Also Read: NASA withheld info on 3I/ATLAS': Harvard scientist's big claim on comet

What is Loeb's take?

Loeb suggests that the combination of rapid brightening, unusual colour may point to more than a standard cometary event.

He described the scenarios as part of a thought experiment, noting that while a natural explanation remains likely, the possibility of something more extraordinary should not be dismissed.

However, NASA maintains its statement that 3I/ATLAS “poses no threat to Earth” and that current data support its classification as a cometary object. Some independent astronomers argue that, while unusual, 3I/ATLAS’ behaviour remains within the range of extreme natural phenomena.

  • Shirin Gupta
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    Shirin Gupta

    Shirin Gupta is a content producer with the Hindustan Times. She covers everything between politics, entertainment and sports at the US desk. Shirin got interested in political journalism during her time as a web editor at her college newspaper NCC News in Syracuse when she first started seeing the effects of national politics in life of her fellow colleagues. Shirin has worked on a wide range of fast-moving and developing stories locally when she was at NCC editing accessible reports for the audience. Her current role requires her to track real-time updates, verify information and present balanced coverage across diverse beats. Covering US politics from an international newsroom perspective has further deepened her understanding of how domestic decisions can have far-reaching global consequences. With a keen interest in international affairs, Shirin continues to build her expertise in geopolitics, policy shifts, and cross-border developments. She aims to learn and evolve her reporting in matters of geopolitics and international issues. Outside the newsroom Shirin writes about books and music for her personal blog. She is an avid consumer of pop culture and reveres literature.Read More

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