The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's not aliens.) ...

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from interstellar space. Yesterday, the intriguing stranger was named A11pl3Z. Now ...

In 2019, the comet Borisov was deemed the second interstellar object to enter our solar system. However, in 2022, another object was found to have previously come into our solar system and struck ...

For only the third time, astronomers have found something passing through our solar system that came from outside the solar system. This interstellar object, known as 3I/ATLAS, is still pretty far ...

Something unusual is moving through our solar system—a fast, faint object now confirmed to have originated beyond it. Astronomers have officially designated the discovery as 3I/ATLAS, marking it ...

Astronomers have just confirmed the discovery of a rare visitor from beyond our solar system — a newly detected interstellar comet. Officially named 3I/ATLAS, the comet was first spotted on July ...

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It was first discovered zipping near the sun this fall.

An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, according to NASA. A comet from a solar system outside our own was ...