Pluto imparted a slight but measurable alteration to the New Horizons spacecraft's trajectory (both bending and acceleration) during its 2015 flyby. The minimal nature of this trajectory change was ...

Tombaugh Regio — the large, pale heart that dominates Pluto's terrain — is made of nitrogen ice that accumulated after a huge, slow-motion impact, new research suggests. When you purchase through ...

For generations Pluto stood as the mythic ninth planet until a scientific revolution shattered that legacy and transformed it into the most famous dwarf planet in history. This episode reveals Pluto’s ...

Pluto's surface, fitting for a world whose surface shivers at a cryogenic -364 F (-220 C), is frozen solid. But beneath that nitrogen ice may lie a subsurface ocean of liquid water. A recent study ...