A bold hypothesis is now gripping the astronomy world: Harvard theoretical physicist Avi Loeb claims that the interstellar visitor 3I/ATLAS shows 'no tail'—and suggests it could be 'something else' ...

Comets of this type aren't everyday sightings. The opportunity to observe objects that might have orbital periods measured in thousands of years is fleeting. So when Comet Lemmon recently appeared in ...

Interstellar object 3I/ATLAS has surprised scientists by showing no cometary tail after passing close to the Sun. This unexpected behavior challenges the assumption that it's a typical comet, fueling ...

Astrophotographer Brennan Gilmore has captured spectacular views of the solar wind stripping a vast section from C/2025 A6 (Lemmon)'s tail, as the icy wanderer continues to brighten ahead of its close ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...

CAPE CANAVERAL, Fla. (AP) — Telescope observations reveal a growing tail on the comet that’s visiting from another star. Released Thursday, the pictures taken by the Gemini South telescope in Chile ...