Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

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

The star is surrounded by a protoplanetary disk, and this disk is the first evidence of debris condensing into what will ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Such is the case with 3I/ATLAS, a third known interstellar object from outside of our solar system to be discovered, which ...

Following the historic discoveries of ‘Oumuamua and 2I/Borisov, astronomers have now confirmed the presence of a third ...

Volcanoes act as windows deep into Earth. They help us understand the formation of our planet and the others in our solar ...

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

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

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...