Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere ...

Comet 3I/ATLAS is warming up as it approaches the sun, causing a jet to emerge. The jet is visible in a dramatic new image.

Comet Lemmon, also designated C/2025 A6, was discovered in January by a telescope scouring the night sky for near-Earth ...

Newly unveiled images of the interstellar object 3I/ATLAS have revealed a spectacular cosmic event, a massive jet of gas and ...

T he best time to watch Comet C/2025 A6 (Lemmon) is upon us. Grab your binoculars, telescope, or just get into a very dark ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere.

There’s been a new comet in the sky over the past few weeks, but now is the prime time to see it for yourself.

The behavior, though dramatic, is perfectly normal for comets as they heat up while approaching a star, experts say. An ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...