As 3I/ATLAS is presently fascinating space enthusiasts, researchers say that such interstellar objects may act as planetary ...

Interstellar objects like 3I/ATLAS that have been captured in planet-forming disks around young stars could become the seeds of giant planets, bypassing a hurdle that theoretical models have ...

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 ...

There are officially eight planets in our Solar System — yes, I know, Pluto was totally a planet, but not anymore — but that doesn’t mean there isn’t something lurking on the edge of our system that ...

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 ...