In the spirit of the season, the interstellar comet 3I/ATLAS is changing color as it leaves the sun behind — shifting from a reddish tint to a faint green glow. That visible change signals the comet ...

Scientists say the colour shift in interstellar comet 3I/ATLAS is due to gases in the comet's coma reacting to solar heat.

A newly discovered comet, C/2025 A6 (Lemmon), is gaining attention as it heads toward Earth for a close flyby this October. With a distinctive lime-green glow, this comet could soon be visible to the ...

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

Hawaii’s Gemini North telescope has captured new images of interstellar comet 3I/ATLAS with a green glow as it remerges from ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Newly discovered comet SWAN25F will reach its closest point to the sun on May 1, but lots of ...

Comet Lemmon (C/2025 A6) is making a rare appearance in Earth's skies, after rapidly approaching Earth since its discovery in January The comet reaches its closest approach to Earth in October, ...

A Winter Storm Warning and Winter Weather Advisory will be in effect until 10 a.m. Sunday, with most areas on track for 4 to 8 inches of snow in total. (WDIV) Comet SWAN, hailing from the Oort Cloud ...

NEW YORK (AP) — Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system — possibly what’s ...

NEW YORK — A newly discovered green comet tracked by telescopes has likely broken apart as it swung by the sun, dashing hopes of a naked-eye spectacle. Comet SWAN, hailing from the Oort Cloud beyond ...