Planitia structure on its surface. Ever since NASA's New Horizons sent back the first-ever photos of Pluto in 2015, the dwarf planet's mysterious heart-shaped region has puzzled scientists.

The largest TNOs known are Pluto, Eris, by Haumea ... The resulting model of Planet X’s characteristics differs significantly from previous studies, specifically that of Caltech's Mike Brown ...

When the International Astronomical Union (IAU) demoted Pluto from a planet to a dwarf planet in 2006, it surprised a lot of people, including some scientists. Even many years later, some ...

A blue atmosphere, smooth areas, and youthful mountain ranges - this dwarf planet is full of surprises. When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished ...

Nevertheless, because it orbited the Sun like a planet, it was classified as a planet and named Pluto, after the god of outer darkness in Roman mythology. So things stood for 65 years. Although ...

Pluto's moon: NASA's New Horizons captured this high-resolution enhanced color view of Charon just before the spacecraft made its closest approach to Pluto on July 14, 2015. Thanks For Reading!