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How Did Dinosaurs Become Extinct?

Today’s Wonder of the Day features a cataclysmic ending!

#2072

How Did Dinosaurs Become Extinct?
What Is Aerogel?

Join us in Wonderopolis today as we learn all about “frozen smoke”!

#2006

What Is Aerogel?
What Causes a Shooting Star?

Today’s Wonder of the Day features some real rock stars that are out of this world!

#11

What Causes a Shooting Star?
Where Is the Oort Cloud?

We believe you’ll think today’s Wonder of the Day is out of this world!

#1830

Where Is the Oort Cloud?
How Big Is the Solar System?

You won’t believe how big today’s Wonder of the Day is!

#1592

How Big Is the Solar System?
What Are Saturn’s Rings Made of?

Join us in Wonderopolis today for a look at some rings more famous than diamonds!

#1527

What Are Saturn’s Rings Made of?