In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One year on the distant ice planet is 248 Earth years, and one day is 153 ...

Although Pluto's orbit was more elongated than the other planets' (and even crossed the orbit of Neptune—not the kind of thing you would expect a decent planet to do), it seemed alone in its ...

Artistic representation of the huge and slow impact on Pluto ... planet’s frozen conditions. However, this new research—published this week in Nature Astronomy—also suggests that Pluto has ...

Named for the maiden-snatching, shadow-dwelling god of the underworld, the small but mighty planet Pluto is ... These themes will no doubt resurface when Pluto returns to the visionary vapors ...

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 ...