Pluto was once called the ninth planet, but in 2006, scientists changed its status to a dwarf planet. A planet must clear its orbit of other objects, but Pluto shares its space with many small icy ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Because Pluto is so far, it took time for the spacecraft to transmit all of its stunning views of the distant dwarf planet. Now, NASA has released the sharpest photos the spacecraft took.

Before New Horizons, the best images of Pluto revealed nothing more than a ... its moon Charon revealed more surprises about the dwarf planet and its orbiting moon. Click on the hand to see ...

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 ...

And sure enough, afterward, there was definitely a shift — in Pluto's favor. The images New Horizons sent back were ...

Although Seeing in the Dark doesn't directly discuss Pluto, it does celebrate the joy of observing planets. Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of ...