When NASA’s New Horizons mission flew past Pluto in 2015, it gave humanity our first glimpse of a colossal depression on the isolated world. It's named Sputnik Planitia. Comparable in size to the ...

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 ...

Pluto’s heart-shaped feature, known as Tombaugh Regio, has captivated scientists and the public alike since its discovery. This striking geological formation offers insights into the unique ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A huge heart-shaped ...

During its flyby of Pluto in 2015, NASA’s New Horizons mission captured a now iconic image of a heart-shaped feature on the dwarf planet. And new research about Pluto’s “frozen heart” has revealed ...

OXON HILL, Md. — Pluto’s got a roughly 4-billion-year-old case of heartbreak. The left ventricle of the dwarf planet’s famous heart-shaped feature might owe its existence to a run-in with a big space ...

Approach images of Pluto and Charon taken by the LORRI imaging system during the New Horizons spacecraft encounter have been used to determine the mean radii and shape of Pluto and Charon. The primary ...

HONOLULU (KHON2) — A single day on Pluto is as long as 6.9 Earth days. Today, Feb. 18 is Pluto Day. You may ask yourself why Pluto has its own day since it is no longer considered a planet of our ...

Shiny, gray space boulders floating in the outskirts of the solar system are the remnants of an ancient fiery collision involving two massive objects, the larger of which was nearly the size of Pluto, ...

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 ...

The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists led by the University of Bern and members of the National ...