Leaked images hint at a dusty spacecraft; Avi Loeb fuels speculation, but NASA dismisses alien claims. Comet's brightening, ...

I/ATLAS made its closest approach to Earth on 29 October 2025, coming within 1.8 astronomical units, or around 167 million miles.

Manhattan-sized comet 3I/ATLAS — which scientists suspect could have extraterrestrial origins — will reach its closest ...

Interstellar comet 3I/ATLAS will reach perihelion on October 30, triggering its brightest and most active phase as NASA and ...

Comet 3I/ATLAS nears the sun Oct. 29. Experts say it's natural, despite viral alien theories. Here's how to see it from ...

Dr John Brandenburg claims interstellar comet 3I/ATLAS is visible despite its position near the Sun, sparking debate over its ...

Tonight, skywatchers can witness Comet Lemmon (C/2025 A6), a rare visitor visible in the northwestern sky after sunset. This ...

Comet 3I/ATLAS is passing through our solar system. Professor Avi Loeb suggests it may be an alien artifact. Data indicates ...

The brief, bright appearance of Comet C/2025 A6 (Lemmon) is rapidly drawing to a close, giving stargazers a final, narrow ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A new photo shows the long tail of Comet Lemmon after being twisted and shredded by a strong gust ...

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 ...

In October, a newly discovered comet will streak so close to Earth that people may be able to make out its heavenly fireworks with the naked eye — a spectacle that won’t happen again for more than a ...