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 ...

Interstellar comet 3I/ATLAS, a 7.5-billion-year-old visitor from the early galaxy, is offering scientists a rare glimpse into ...

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.

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...

For millions of years, a tiny icy fragment wandered through space—like a sealed bottle drifting across a cosmic ocean. This ...

Comet Lemmon has brightened dramatically since its discovery on Jan. 3,, raising hopes that it could become a spectacular ...