Scientists say 3I/ATLAS is moving at speeds above 130,000 mph (210,000 km/h). It is only the third interstellar object ever ...

Interstellar comet 3I/ATLAS is expected to reappear soon after moving out of the Sun’s glare, allowing astronomers and skywatchers to observe its path and study its rare interstellar origins.

While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

Comet 3I/ATLAS has baffled astronomers after showing a mysterious acceleration no one can explain - sparking fresh debate ...

A rare green Hallowe’en comet will be visible in the night sky over the next few weeks before it vanishes for 1,300 years.

Interstellar comet 3I/ATLAS is briefly out of view as it travels around the sun this week, but researchers and amateur ...

Mysterious Interstellar Comet 3I/ATLAS, a rare visitor from beyond our Solar System, will make its closest approach to Earth ...

Two space probes, Hera and Europa Clipper, are ideally positioned to fly through the debris trail of interstellar comet ...

The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?

Interstellar object 3I/ATLAS is baffling scientists with its blue glow and strange acceleration. Harvard's Avi Loeb argues it could be an alien probe, not just a comet.

Is tonight a full moon? Here's when, what time to watch Comet Lemmon and zooming fireballs in the sky from Taurid meteor ...