A newly discovered celestial visitor, Comet C/2025 R2 (SWAN), is expected to pass by Earth on October 21, offering stargazers across the globe a rare chance to witness a glowing comet visible even to ...

It was early January 2025 when a faint light spot was observed at the Mt. Lemmon Observatory in Arizona. Follow-up observations revealed that the object was a comet visiting from the outer edge of the ...

November nights will bring us back to a visitor from interstellar space. If you don't know what we're talking about, you must be living under a rock at the ...

A pair of newly discovered comets are making a rare double display in the night sky this week. SWAN and Lemmon, both of which were discovered this year, have reached their closest points to Earth in ...

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that won’t return until the next millennium. Comet C/2025 A6 (Lemmon), captured ...

A bright new solar system comet could put on a show in the October night sky as it zooms past Earth. Comet C/2025 R2 (SWAN) was discovered on Sept. 10 by Ukrainian amateur astronomer Vladimir Bezugly.

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 known as the Oort ...

PORTLAND, Ore. (KOIN) — Comet Lemmon is nearing its closest approach to Earth next week and could be visible to some with the naked eye. The comet is expected to be at its best visibility on October ...

Perihelion is the point on an orbital course that brings a body closest to the sun. C/2025 K1 (ATLAS) is an Oort cloud comet ...