The celestial body’s status as the solar system's ninth planet was withdrawn in 2006. Now some experts say we might want to ...

The head of NASA says maybe Pluto is a planet after all. He is wrong because Pluto is part of the rest of the solar system ...

Pluto was downgraded from a planet to a dwarf planet in 2006 by the International Astronomical Union. The main reason for Pluto's demotion is that it's not able to "clear its orbit of debris." ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's ...

Almost 20 years after the debate appeared to be settled, Pluto is back in the spotlight. View on euronews ...