This category is for sites on defending the planet from global threats such as possible asteroids, comets, or artificial space debris.
The UK government is to establish a panel of experts to advise on the risk of the Earth being hit by an asteroid or comet, and plans for evacuation and/or deflection.
Astronomers say they are well on their way to finding every asteroid that poses a threat.
Describes the threat of a comet impact with Earth and provides a plan of action to survive a large impact.
Online calculator for cratering effects of hypothetical asteroid impacts.
An argument for reducing global tension by developing a defense against impacts with Near Earth Objects.
National focus in the UK for studies into the threat posed to the Earth by collisions with asteroids and comets.
A Cincinnati Post news story about a meeting called by the U.S. government on the chances of an asteroid strike and a possible defense for it.
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