Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did every planet suddenly get a twin? Where would each planet’s double fit in? Why ...

Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...

Do they look similar to Jupiter? A new study finds they probably don't. Before getting into the details, let's talk about the ...

Researchers studied the data closely and suggested a few possible ideas about the planet’s atmosphere and surface.

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

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

Located about 39 light-years from Earth, the TRAPPIST system resembles a miniature version of our solar system: The star, an ...

Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, an enormous, donut-shaped region of icy objects beyond Neptune.

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

A first ever detection of a coronal mass ejection from a small red dwarf could have big consequences for life on any nearby ...

Recently reported methane signatures detected by the James Webb Space Telescope could be a hint to it potentially harboring ...