At 3.51 au from the Sun well beyond the region where water ice normally drives strong cometary activity 3I/ ATLAS still ...

Among these celestial visitors — the interstellar object 3I/ATLAS, along with C/2025 A6 (Lemmon) and C/2025 R2 (SWAN) — not ...

The 3I/ATLAS threw off over 13.5 million metric tons of water in the month after perihelion, a plume so large that it caused ...

Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what you’ll need to catch a glimpse.

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 known as the Oort ...

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 ...

Protoplanetary disk. Figure from a computer simulation visualizing the formation of planets (https://svs.gsfc.nasa.gov/12278 ). Photo: NASA/JPL-Caltech. August 22, 2024, Mountain View, CA - An ...

Ernest Opik, an Estonian astronomer based at the Astronomical Observatory in Tartu from 1921-1944, commenced research on the frequencies and speeds of meteors and comets in the 1920s. In 1932, Opik ...