What's the Difference Between a Planet and a Dwarf Planet?

Imagine a group of kids playing in the park. A planet is like the kid who stays with the main group and follows all the rules. A dwarf planet is like the kid who plays nearby but doesn't always stick to the same game. Both are important, but only one is considered part of the main group.

There are three special rules that make something a planet:

• It has to orbit the Sun (like Earth).
• It has to be big enough to be rounded by its own gravity (like Saturn).
• It must have cleared its path around the Sun, meaning it's the main player in its neighborhood.

Dwarf planets are like planets who didn't fully clean up their space, they're still important, just not part of the planet club.