Harvard Scientist Addresses Alien Speculation on Comet 3I/ATLAS

Published
November 09, 2025
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Special Requests
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398 words
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Scientists studying the interstellar comet 3I/ATLAS are grappling with public speculation that it may be an alien spaceship. According to a report from Boston.com, this speculation has gained traction partly due to comments from prominent figures like Harvard astrophysicist Avi Loeb, who has suggested a 30 to 40 percent chance that the comet could have an artificial origin.

Loeb's theories have sparked excitement and curiosity, leading to inquiries from celebrities like Kim Kardashian and discussions on popular platforms like Joe Rogan's podcast. The acting NASA administrator, Sean Duffy, reassured the public that there is no threat from 3I/ATLAS, clarifying that it is a natural object composed of rock, dust, and ice, similar to other comets.

The comet, first spotted by the University of Hawaii's Asteroid Terrestrial-impact Last Alert System, is set to make its closest approach to Earth on December 19th, at a distance of about 170 million miles.

Observations indicate that while 3I/ATLAS exhibits some unusual features, such as a cloud of gas and dust at a great distance from the sun, most scientists, including UCLA astronomer David Jewitt, argue that it behaves like a typical comet.

Jewitt noted that all observations align with what we see in other comets, challenging Loeb's interpretation. Loeb, however, points to peculiarities, such as the comet's trajectory and chemical composition, as potential indicators of artificial design.

He questions whether the unusual properties could signify a Trojan horse sent by extraterrestrials. The report highlights that 3I/ATLAS contains more carbon dioxide than typical solar system comets and exhibits a notable color shift when it approached the sun, phenomena that have fueled Loeb's theories.

Yet, many astronomers suggest that the comet's characteristics are likely due to natural processes rather than extraterrestrial technology. As 3I/ATLAS continues its journey out of the solar system, further observations from telescopes like Hubble and the upcoming Vera Rubin Observatory will provide more details.

The ongoing debate about the comet reflects broader societal interests in the possibility of extraterrestrial life, blending scientific inquiry with public fascination. Loeb's invitation to Kardashian to join his research team signifies the intersection of science and popular culture in the exploration of these cosmic mysteries.

This story underscores the importance of communication in science, especially given the compelling nature of the search for extraterrestrial life. Sources indicate that while speculation can ignite curiosity, it is crucial to balance it with scientific reasoning and factual evidence.

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