Comet Lemmon will have its closest brush with Earth on or around Tuesday, Oct. 21. Comet SWAN should have its flyby with ...

A comet is a ball of ice and rock and is a leftover fragment from the formation of the solar system. Comets generally live ...

A pair of newly identified comets are jointly appearing in the October sky, and it’s possible to see both — if you know where ...

Recently, scientists discovered a number of new comets, two of which will be passing by Earth in October. Here's everything you can expect to find in the skies.

Learn when and where to see Comet Lemmon and Comet SWAN this October as they light up the night sky in a rare double comet ...

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 ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

ALMA captures surprising activity in comet C/2014 UN271, Bernardinelli-Bernstein comet, the largest ever detected.

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

Three meteor showers are active over Michigan skies, with peaks approaching. And a pair of comets are joining the show.

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...