Nevertheless, because it orbited the Sun like a planet, it was classified as a planet and named Pluto, after the god of outer darkness in Roman mythology. So things stood for 65 years. Although ...

Here are the five most surprising things discovered by the deep-space instrument. After almost a decade in space, the New Horizons probe's close encounter with Pluto lasted just six days as it ...

Pluto, considered the ninth planet in our solar system until it was reclassified to dwarf planet status in 2006, is thought to have undergone an impact that broke off the largest of its five moons ...

“You get two things right for the price of one.” The study could also solve another mystery about Pluto, namely how the dwarf planet came to possess a theorized underground liquid ocean ...

Amanda Kooser covers the quirky side of science and space. Pluto has five moons, but Charon stands out from the rest. Charon is half the size of Pluto, “making it the largest known moon relative ...

Charon is large in size relative to Pluto, and is locked in a tight orbit with the dwarf planet. A new simulation suggests how it ended up there. By Jonathan O’Callaghan Some 4.5 billion years ...

Artistic representation of the huge and slow impact on Pluto that led to the heart-shaped Sputnik ... [+] Planitia structure on its surface. Ever since NASA's New Horizons sent back the first-ever ...