Pluto’s most recognizable feature is the giant, heart-shaped area in its southern hemisphere. NASA’s New Horizons mission camera only photographed this Valentine shape in 2015. Where it came from and ...

Beneath Pluto’s “heart” lies a cold, slushy ocean of water ice, according to data from NASA’s New Horizons mission. In a paper published today in the journal ...

When NASA's New Horizons spacecraft flew by Pluto in 2015, it returned images with a sweet surprise: a heart-shaped formation dominating the surface of the dwarf planet. Now, researchers believe ...

A huge heart-shaped feature on the surface of Pluto has intrigued astronomers since NASA’s New Horizons spacecraft captured it in a 2015 image. Now, researchers think they have solved the mystery of ...

The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists. The team is the first to successfully reproduce the ...