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

Such is the case with 3I/ATLAS, a third known interstellar object from outside of our solar system to be discovered, which was spotted by NASA’s ATLAS (Asteroid Terrestrial-impact Last Alert System) ...

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 ...

Astronomers have discovered a "fossil" body residing on the outskirts of the solar system, according to new research. The object – which goes by the formal designation 2023 KQ14 but is nicknamed ...

For lovers of newly identified space objects, July has indeed been an exciting month. Last week, astronomers described Ammonite, a potential dwarf planet beyond Pluto. Yesterday, astronomers announced ...

Harvard astronomer Avi Loeb suggests that if interstellar object 3I/ATLAS isn't a comet, nor an asteroid, it may have been ...

A team of astronomers discovered a strange object in the outer solar system that is in a resonant orbit with Neptune.

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

Astronomers have been trying to understand the mysterious interstellar object that zipped through our solar system in 2017, dubbed ‘Oumuamua. A new study suggests answers about its color ...

As astronomers rush to study a newly discovered comet from beyond our solar system, a powerful new observatory may turn rare ...

Comet 31/ATLAS, a rare interstellar object, may be 7 billion years old and could reveal secrets about the early Milky Way and ...