Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system ...

Comet C/2025 R2 (SWAN) was discovered on Sept. 10 by Ukrainian amateur astronomer Vladimir Bezugly. It has brightened ...

A comet discovered earlier this year, now just bright enough to be visible to the naked eye, is poised to be among the top ...

Comet Lemmon is now visible with comet SWAN after sunset while also remaining visible before dawn for Northern Hemisphere ...

See Comet Lemmon shine in the skies over England in a new sunset portrait. Award-winning astrophotographer Josh Dury has ...

Jim Bell, astronomer and former president of The Planetary Society, explains the uniqueness of the interstellar 31/ATLAS ...

Comet Lemmon is now visible with comet SWAN after sunset while also remaining visible before dawn for Northern Hemisphere ...

The Orionid meteor shower peaks this year with the arrival of a new moon, offering a rare chance to see shooting stars ...

Comets Lemmon and SWAN will be at their brightest just as the annual Orionid meteor shower produced by Halley's Comet reaches ...

Conditions are near-perfect to spot this celestial visitor, which won't appear again in our night sky for another millennium.

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...