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In pictures: How to protect Earth from asteroid de...
At their 2013 meeting, United Nations Committee on the Peaceful Uses of Outer Space endorsed expanded efforts for an International Asteroid Warning Network. IAWN is a global network of telescopes and tracking stations from different parts of the world searching all parts of the sky to provide a more comprehensive picture of how many asteroids exist and where they are. The IAWN provides a way for additional nations to join the effort.
In pictures: How to protect Earth from asteroid destruction