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

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

The ESA/NASA Solar and Heliospheric Observatory (SOHO) captured comet Comet 96P/Machholz latest flyby of the Sun. See a ...

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

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

For millions of years, a fragment of ice and dust drifted between the stars—like a sealed bottle cast into the cosmic ocean.

Water is the universal yardstick of comet science, the baseline for measuring how sunlight drives a comet's activity and ...

Buried deep in Greenland's ice sheet lies a puzzling chemical signature that has sparked intense scientific debate.

The Orionids — one of two major meteor showers caused by remnants from Halley’s comet — will peak with the arrival of a new ...

Astronomers are stunned by interstellar comet 3I/ATLAS releasing water vapour unusually far from the Sun. This rare event, ...

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

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...