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Wonderopolis

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Why Is Pluto No Longer a Planet?

Poor Pluto! Put on your space suit and join us as we examine the sad tale of this once proud and now demoted dwarf planet.

#73

Why Is Pluto No Longer a Planet?
How Many Hot Dogs Can You Eat In 10 Minutes?

We sure hope you’re hungry. Today’s Wonder of the Day is sure to fill you up!

#273

How Many Hot Dogs Can You Eat In 10 Minutes?
Which Bat Is Best?

Step up to the plate with us as we investigate baseball bats and celebrate the World Series Wonderopolis-style!

#25

Which Bat Is Best?
Why Are There Seven Days in a Week?

Today’s Wonder of the Day is perfect for a Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday!

#1666

Why Are There Seven Days in a Week?
What Is a Prime Number?

Today’s mathematical Wonder of the Day may have you counting 2, 3, 5, 7, 11, 13, 17, 19, 23, 29…

#190

What Is a Prime Number?
What Can Satellites Do?

Today’s Wonder of the Day isn’t a bird or a plane or Superman, but it IS way up high in the sky!

#552

What Can Satellites Do?