Pluto is really small. It’s about 1/1000th the size of Earth. That makes it roughly the same size as the moon (but not quite).
It’s also much smaller than any of the other planets. It’s so tiny that this is the reason some people think it shouldn’t be considered a planet.
But Pluto is still very important. It’s the last major body left in our solar system that hasn’t been fully explored. Scientists hope that someday we’ll find out more about Pluto and other objects like it. And who knows, maybe someday we’ll discover life on another planet!