For decades, Pluto was our solar system's ninth planet. This video explains the scientific journey that led to its ...

Astronomers have discovered 2017 OF21, a mysterious dwarf planet in the solar system's frozen outskirts. This video explores ...

It's going on two years since the International Astronomical Union rewrote its definition of a planet and busted Pluto down to something it called a "dwarf planet." But it's not a done deal, says Mark ...

However, astronomers in Hawaii just spotted a pair of exciting discoveries — a huge exoplanet and a brown dwarf — using Japan ...

Walking into a classroom today is like stepping into a parallel universe, because so many things that once sounded rock solid ...

SPHERE’s detailed images of dusty rings around young stars offer a rare glimpse into the hidden machinery of planet formation ...

Astronomers using the Subaru Telescope in Hawaiʻi have discovered a massive planet and a brown dwarf orbiting distant stars.

Astronomers have created a groundbreaking discovery of images showing debris disks in an extensive range of exoplanetary ...

Of the seven Earth-sized worlds orbiting the red dwarf star TRAPPIST-1, one planet in particular has attracted the attention ...

New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks ...

Traces of comets and asteroids in distant solar systems: In young planetary systems, mutual collisions between asteroids or ...