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

(L. Calçada/ESO via AP) NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, ...

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 ...

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 ...

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.

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 planet like Star Wars' Tatooine detected outside of our solar system may orbit two failed stars ... Can the US get humans to Mars in Donald Trump's second term? The brown dwarf pair was first ...