Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Interstellar comet 3I/ATLAS is briefly out of view as it travels around the sun this week, but researchers and amateur ...

The latest telescope image of the interstellar comet 3I/ATLAS revealed that the object was ejecting a dramatic amount of ice ...

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.

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

New telescope images show that the interstellar comet 3I/ATLAS is shooting a giant jet of gas and dust toward the sun. This ...

Comet C/2025 A6 — also known as Lemmon — will make its closest approach to Earth on Tuesday night, Oct. 21, and will continue ...

NEW YORK (AP) — Two bright green comets are streaming through the skies and are ... releasing their characteristic streaming tails. Comet Lemmon, also designated C/2025 A6, was discovered in January ...

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

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