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Asteroids - Coggle Diagram
Asteroids
Medium-Sized Asteroids
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Current Situation
About 8,000 have been identified.
Around 17,000 remain undiscovered.
Potential Danger
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Example:
A 19-meter asteroid exploded over Chelyabinsk, Russia, in 2013.
Injured about 1,200 people.
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Main Idea
NASA is identifying and tracking asteroids near Earth and developing methods to protect the planet from potential impacts.