Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. If you’re yet to see Comet Lemmon (C/2025 A6) and Comet SWAN ...

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When 3I/ATLAS swept past the sun in late October 2025, it became only the third confirmed visitor from interstellar space ever detected. Unlike the mysterious 'Oumuamua, which revealed almost nothing ...

Comets tend to race through our skies too fast for us to study them well, but a NASA spacecraft has achieved a unique feat with Comet C/2025 R2 (SWAN), following it closely as it drifted through the ...

NEW YORK (AP) — 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 ...