I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

I do so love an ostentatious comet. As I wrote in a recent “The Universe” column, when these dusty ice balls are billions of kilometers from the sun, they’re frozen solid. But as they near our star on ...

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, all but confirming that it has natural origins.

Interstellar comet 3I/ATLAS is a chemical goldmine, holding life's building blocks four times richer than local comets. Harvard's Avi Loeb claims this points to a 'friendly alien nature'.

The unidentified flying object 3I/ATLAS has 'two jets' coming off its rear which Harvard astrophysicist Avi Loeb claims 'needs to be explained' in his latest post ...

Then there was the September discovery of C/2025 R2 (SWAN), a comet so bright that even when it was near the moon on ...