This hypothesis was nicknamed the “Big Whack.” Tthe dwarf planet Pluto (R) and Charon are shown July 11, 2015. (Photo by NASA/JHUAPL/SWRI via Getty ... [+] Images) Researchers studying Pluto ...

Pluto is probably best known for being a demoted planet. In 2006, the International Astronomical Union stripped it of its ...

New Horizons Unveils Pluto’s True Face The watershed moment in Pluto’s exploration came in July 2015, when NASA’s New Horizons spacecraft flew by the dwarf planet. After a nine-year journey ...

This story appears in the July 2015 issue of National Geographic magazine. Small, cold, and absurdly far away, Pluto has always been selfish with its secrets. Since its discovery in 1930 ...

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.

An curved arrow pointing right. NASA's New Horizons spacecraft took us to Pluto for the first time in July 2015. Scientists are astonished by the incredible features they've observed on the dwarf ...

An curved arrow pointing right. After launching off of Earth 9 years ago, NASA's New Horizons spacecraft has passed Pluto and sent back the most complex picture of its surface so far. Video ...

Pluto is too far away from Earth to be seen with ... That was until NASA's 'New Horizons' probe arrived in 2015 and transformed our understanding of this distant, enigmatic body.

Pluto may have got romantic to capture its largest moon, colliding and engaging in a passionate but icy 10 hour kiss with Charon billions of years ago. When you purchase through links on our site ...

When NASA's New Horizons probe flew past Pluto in July 2015, the images it returned astonished scientists. Not only was the surface more varied than anyone had predicted, but the photographs also ...