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A large asteroid is set to make history when it passes within 20,000 miles of our planet before the decade is out.
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When it was first discovered 20 years ago, it was thought that Apophis had a relatively high chance of colliding with us.
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Astronomers will have the opportunity to study the enormous space rock when it passes us by in March.
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NASA is making preparations to study a large asteroid that is expected to pass within 19,000 miles of Earth.