Pluto’s most recognizable feature is the giant, heart-shaped area in its southern hemisphere. NASA’s New Horizons mission ...

The large heart-shaped region may have formed after a massive but slow-moving object collided with Pluto at a strange angle.

Tombaugh Regio — the large, pale heart that dominates Pluto's terrain — is made of nitrogen ice that accumulated after a huge ...

After years of extensive research, an international team of astrophysicists has uncovered the most likely explanation behind ...

Astronomers believe a planetary body collided with Pluto early in its history to create a gigantic heart-shaped feature on ...

When NASA released images of Pluto in 2015 taken by the New Horizons spacecraft, many were captivated by the dwarf planet’s ...

Advancing knowledge of Pluto’s composition has allowed scientists to model its iconic heart. By entering many variables into ...

On the surface of the dwarf planet Pluto, there's a 1,600-kilometer-wide area covered by a thick layer of nitrogen ice that ...

Through computer models, the team learned that a collision in Pluto's ancient history, before it was fully formed, could have ...

After the first 3 billion miles of New Horizons probe's journey to Pluto in 2015, a new study finally reveals the secret ...

Scientists have worked out the mystery of why Pluto has a heart. Researchers believe the huge heart-shaped feature on the ...

The "heart" of Pluto, officially named Tombaugh Regio, has fascinated both the public and scientists since its discovery ...