Air Command and Staff College, Air University Maxwell Air Force Base United States
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Planetary defense against asteroids should be a major concern for every government in the world. Millions of asteroids and comets cross our solar system, many of them coming dangerously close of Earth. The ones that approach Earth orbit are called Near-Earth Objects NEOs, and come in various size and shape, from small ones that burn up completely when they enter Earths atmosphere, to large ones that can do a great deal of damage and even threaten human race with extinction. Although extinction level impacts are extremely rare, statistically the chance still exists. While extinction is a concern, we should not disregard the smaller size asteroids because these can do extensive damage and wipe out entire regions on Earth. This article intends to provide a brief description of the current situation regarding Planetary Defense.