Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

Viewers who watch the show may wonder what happened to Pluto in 2006 and whether any of the planets discussed in the show might lose their status next ... they be called "dwarf planets"—much ...

In this region, objects in space could cross any dwarf planet — and Pluto’s — orbit. Pluto also sits within a larger field of objects surrounding the solar system called the Kuiper Belt.

Once the quirky underdog of our solar system, Pluto held planetary status until 2006 ... Now officially labeled a “dwarf planet,” Pluto may have lost its title, but not our affection.