NPR

Pluto isn't a planet — but it gives us clues on how the solar system formed

Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size to Pluto. So, during the summer of 2006, members of the International ...
AZ Central

Is Pluto a planet? Here’s why scientists gave it a cosmic demotion

Once the quirky underdog of our solar system, Pluto held planetary status until 2006, when it got a cosmic demotion that still stings space fans. Discovered in 1930, Pluto was the ninth planet for ...
NPR

Pluto isn’t a planet — but it gives us clues for how the solar system formed

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...