Pluto and its largest moon Charon have a rare tidal locking relationship, constantly showing the same faces to each other.

The heart's brightness arises from sunlight reflection, while red patches, formed by tholins, showcase Pluto's atmospheric intricacies and ongoing discoveries in the Kuiper Belt.

New Horizons exposed Pluto as a surprisingly active world shaped by towering ice mountains, cryovolcanoes that erupt frozen mixtures instead of lava, and a possible hidden ocean sealed beneath a deep ...

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 ...