October belongs to Comet C/2025 A6 (Lemmon). This comet is expected to brighten dramatically, potentially reaching naked-eye visibility around its closest approach to Earth on October 21st (with ...

This quiz invites you to chase comets through time and space, from ancient omens to modern scientific marvels.

The comet will come closest to Earth on Oct. 20. There's hope that it may become bright enough to glimpse with the naked eye.

Named 3I/ATLAS, the comet is only the third known interstellar object to enter our solar system, and it's the largest and ...

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.

Gemini South caught Comet 3I/ATLAS “switching on,” as students and astronomers joined to see dust, gas, chemistry from ...

Astronomy buffs know very well that asteroids and comets are entirely different animals. The former are made mostly of rock and metal, and live in a kind of no-man’s land between Mars and Jupiter. The ...

An asteroid strike on Earth could exceed the destructive power of an all-out nuclear war, triggering earthquakes, tsunamis and wildfires that crisscross continents. (Illustration by Tobias ...

The images of Comet 3I/ATLAS were captured by the Gemini South telescope at Cerro Pachón in Chile on Aug. 27 as the icy ...