I/ATLAS is the third interstellar visitor ever to visit the solar system having been formed around a distant star.

At 210,000 km/h, an interstellar comet does not give engineers and astronomers the luxury of slow iteration. Every observing ...

Interstellar Comet 3I/ATLAS is believed to be much older than the whole Solar System. It traveled across the galaxy for at ...

Interstellar comet 3I/ATLAS will soon reach its closest distance to Earth, so this may be our last, best chance to see this rare object before it heads back out into the universe, never to return. One ...

The object was first detected by the ATLAS telescope system in Hawaii, originally appearing to be an ordinary comet. However, ...

Comet 3I/ATLAS, only the third interstellar object ever observed, is making its final pass through our skies, offering a rare ...

Interstellar visitor 3I/ATLAS is travelling away from the sun on its way back to interstellar space. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

C/2024 E1 (Wierzchos) brightened significantly ahead of its close approach to the sun.

Comet C/2024 E1 (Wierzchos) will reach perihelion during a close solar approach on January 20, 2026, increasing brightness and defining its visibility timeline.

Astronomers spotted comet C/2025 R3, potentially visible without telescopes. It will approach Earth and Sun in April 2026, ...

Interstellar comet 3I/ATLAS is seen in this composite image captured on Nov. 6 by the Europa Ultraviolet Spectrograph instrument on NASA’s Europa Clipper spacecraft, from a distance of around 102 ...

Scientists confirmed that the interstellar comet 3I/ATLAS, which passed closest to Earth in December 2025, showed no detectable technosignatures strong enough to suggest it is an alien spacecraft.