The new observations confirmed the presence of the rare 'anti-solar tail' while analyzing the spectra of the comet to ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

A pair of newly identified comets are jointly appearing in the October sky, and it’s possible to see both — if you know where ...

The mysterious interstellar visitor in our Solar System has shifted in a way that has never been seen among comets before.

An alien comet passing through our solar system made its closest approach to Mars recently, and two European robotic ...

Two spacecraft are on course for 3I/ATLAS, a mysterious interstellar object that some believe could be an alien mothership.

This week, a series of new astronomical observations have deepened the mystery surrounding the unusual interstellar object 3I ...

New observations of 3I/ATLAS have revealed the latest in a growing collection of anomalies the object displays, deepening its ...

Comet Lemmon, also designated C/2025 A6, was discovered in January by a telescope scouring the night sky for near-Earth ...

The spacecraft in question are NASA’s Europa Clipper, going to the eponymous icy moon of Jupiter, and the European Space ...

Comets don't visit often — here's how to capture comet Lemmon, comet 3I/ATLAS, on your camera as they dance across our skies.