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