A comet traveling outside the solar system and heading toward the Earth is much larger than scientists first believed, a ...

I/ATLAS stands apart from other interstellar objects because of its size as well as pace, and will soon disappear from ...

The entire progression will be observed by the ESA’s orbiters the Mars Express and ExoMars Trace Gas Orbiter as well as ...

Our solar system’s third discovered interstellar visitor, comet 3I/Atlas, will dip into the glare of the Sun this week, ...

Astronomers are tracking a newly discovered interstellar visitor called 3I/ATLAS, and early research suggests it may be ...

A massive comet traveling through the solar system is much larger than previously thought and could be a remnant of alien ...

Something strange is moving through our solar system — and scientists are scrambling to figure out exactly what it is.

The Back Story A looming government shutdown could force NASA to furlough staff during critical 3I/ATLAS tracking. Harvard ...

I/ATLAS, the mysterious interstellar object long suspected to be alien tech, survived a massive solar eruption from the Sun.

Comet C/2025 R2 (SWAN) was discovered on Sept. 11 by amateur astronomer Vladimir Bezugly in images from NASA's Solar and ...