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 found was a world packed with surprises: strange landscapes, possible icy ...

Pluto and its largest moon Charon have a rare tidal locking relationship, constantly showing the same faces to each other. This, combined with unique geological features like polygonal ice cells, ...

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

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 ...