On Friday, December 19, the comet made its closest pass to Earth, safely cruising by at a distance of approximately 167 ...

A rare interstellar visitor has revealed secrets that could reshape our understanding of distant star systems. Comet 3I/ATLAS ...

Hawaii’s Gemini North telescope has captured new images of interstellar comet 3I/ATLAS with a green glow as it remerges from ...

Researchers have discovered that interstellar comet 3I/ATLAS has been shedding water, providing insights into the building blocks of life outside of our solar system and the evolution of interstellar ...

The interstellar comet 3I/ATLAS does not come from our corner of the Milky Way, and may be a time capsule of the early galaxy, new research into its trajectory hints. When you purchase through links ...

Interstellar Comet 3I/ATLAS makes its closest, safe approach to Earth on Dec. 19. Learn how this rare visitor reveals secrets ...

Comet 3I/ATLAS is just the third observed interstellar object ever witnessed in Earth's solar system. The Gemini South telescope in Chile is the latest observatory to get a glimpse of the object as it ...

Interstellar comet 3I/ATLAS on Wednesday reached its closest point to the Sun, a point known as perihelion. Although this cosmic visitor hasn’t been visible from Earth since September, our space-based ...

A mysterious comet flying through our solar system may be doing more than just passing by—it could help explain how giant planets like Jupiter are born. At a major planetary science conference in ...

Comet 3I/ATLAS was expected to come within 130 million miles of the sun on Oct. 30. For the time being, 3I/ATLAS will remain on the opposite side of the sun from Earth, making it impossible to observe ...

Earlier this month, the comet passed within 12 miles of Mars, giving NASA's HiRISE camera aboard the Mars Reconnaissance Orbiter a chance to capture its closest photos yet. Those images have not been ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet Lemmon — also called C/2025 A6 (Lemmon) — will on ...