Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete ...

Comet tails, often seen as beautiful celestial phenomena, are more than just a visual spectacle. They hold critical information about solar winds and the Sun’s activity, providing insight into the ...

Two decently bright comets that share a superficial resemblance are gracing our skies right now, in fact: C/2025 A6 (Lemmon) ...

The behaviour of a celestial object has sparked a cosmic debate. Astronomers are accustomed to comets sporting a bright, ...

Worlds that exist close to the warmth of the sun, like the rocky worlds of Mars, Earth and our moon, have relatively little ice, because they lie inside what is known as the ice line. National ...

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 ...

On October 29, Comet 3I/ATLAS reached its closest point to the Sun. This point, known as perihelion, was around 210 million ...

A rogue visitor from deep space, Comet 3I/ATLAS, has put NASA on alert after its trajectory and behaviour shifted ...

New images reveal the stunning reversal of the interstellar objects “anti-tail” and could be indicative of a “maneuvering” ...

New photos of comet Tsuchinshan-ATLAS appear to show a faint "anti-tail" pointing away in the wrong direction. The puzzling extra limb is the result of a rare illusion that is only possible when our ...

The comet C/2023 A3 (Tsuchinshan-ATLAS) was discovered in 2023 and is on its way into the inner solar system. Early estimates say it may outshine the brightest stars in the night sky. The comet is ...