Pluto was once dismissed as a frozen leftover at the edge of the solar system, until we finally got a close-up look. What we ...

The heart's brightness arises from sunlight reflection, while red patches, formed by tholins, showcase Pluto's atmospheric ...

Pluto remains one of the most misunderstood objects in the solar system. From its classification to its physical ...

Decades-old pictures of Pluto’s heart are breaking the Internet again. University of Oxford's Dr Carly Howett explains the science behind the New Horizons mission and that famous 5-billion-kilometre ...

The first pictures sent back by NASA's New Horizons probe after this week's unprecedented Pluto flyby reveal towering mountains made of frozen water — and a giant dark impact basin on top of its ...

Pluto, once considered the ninth planet, was reclassified as a dwarf planet in 2006 because it shares its orbital path with other objects. Despite its demotion, this distant world continues to ...