There are millions of giant rocks hurtling around the the solar system. Some of them stay in the cosmos and others penetrate the Earth’s atmosphere. So how do you tell the difference between different types of space rocks?

The universe is kind of complicated, but Seeker has you covered. Each week, we’ll break down complex space terminology and phenomena using a very high tech medium… papiermâché. You can get all kind of crafty in the cosmos with new episodes of Galactic Glossary every Wednesday.

An Asteroid Didn’t Kill the Dinosaurs, Here’s a New Theory About What Did
   • An Alternative Theory About What Coul...  
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