Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

Pluto has never been much of a planet — small, wired orbit, not much atmosphere — and questions about its status have been raised periodically since its discovery 76 years ago. This week, the ...

Just the opposite: The dog, which premiered the same year as Pluto was discovered, was likely named by Walt to ride the planet’s publicity wave.

“Star Trek” actor William Shatner wants to use Elon Musk’s political sway to get Pluto reinstated as a full-fledged planet. “We should ask Elon to get the President to sign one of those ...

Pluto was once the ninth planet of our solar system, until scientists reclassified it in 2006, sparking outrage and debate. But why was Pluto kicked out of the planetary club? The answer lies in a ...

As Nasa prepares to send its first spacecraft to Pluto, Venetia Phair - who gave the planet its name - talks to the BBC.

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today?

For Maverick, a Golden Retriever in a service dog vest, a trip to Disney was about more than being there for his person. It was also a chance to meet his hero, the character known as Pluto.

"People who don't show you respect because you look young. I'm 37 but look 22. A lot [of people] who don't know my age often ...

Pluto soon became America’s favorite planet, especially after Walt Disney named one of his characters, a charismatic dog, after the newly found planet.