Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

sitting in the Kuiper Belt - a region in our solar system beyond Neptune filled with icy objects, comets, and dwarf planets like Pluto. Since this hidden planet may be so far away, the new study ...

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

Pluto remains a fascinating and beloved part of our solar system with a slightly less glamorous title. At this moment, Pluto is still classified as a dwarf planet. Despite ongoing debate and ...

(L. Calçada/ESO via AP) NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Located about 120 light years away, the exoplanet ...

His adventures searching for the mysterious dwarf planets continue! Welcome to SolarBalls! Space animation filled with fun, entertaining animations that also help you learn about the solar system ...

While it's no longer officially a planet, Pluto remains a fascinating and beloved part of our solar system with a slightly less glamorous title. At this moment, Pluto is still classified as a dwarf ...

Brown dwarfs are sometimes called failed stars because they're lighter than stars, but heavier than gas giant planets. A light-year is nearly 6 trillion miles.The brown dwarf pair was first ...

A new "Tatooine-like" planet outside the solar system may orbit two failed stars ... A light-year is nearly 6 trillion miles.The brown dwarf pair was first spotted years ago.