Fast-moving objects like interstellar comet 3I/ATLAS may be planet-forming seeds, potentially helping to solve an old Solar ...

Astronomers were fascinated after spotting an object from interstellar space hurtling through the solar system earlier this ...

Interstellar objects like 3I/ATLAS that have been captured in planet-forming discs around young stars could become the seeds ...

Astronomers are buzzing over 3I/ATLAS, a mysterious object hurtling through our solar system, and a new theory claims it can ...

Just because Pluto was ruled out as a planet in 2006 doesn’t mean our solar system only has eight planets. The search for Planet Nine is far from over as scientists continue to uncover clues ...

Various news outlets have been discussing a strange object in space, which may or may not be a planet. New measurements show that what was thought to be a brown dwarf—essentially a “failed star” that ...

It's far out, man – literally. Researchers have uncovered the most-distant celestial object in the solar system, a pink dwarf planet nicknamed "Farout," detect at a distance of more than 100 times ...

In a twist that surprised many astronomers, the definition of planet recently adopted by the IAU is not meant to apply to objects around other stars. Also, it does not take formation history into ...