AdvanceSpace

The risk you face of dying as a result of an asteroid impact is about 1 in 20,000, the same risk you face of dying in a plane crash. - Spaceguard Survey

Near-Earth Object (NEO)

NASA Near-Earth Object Program site is a comprehensive look at comets and asteroid threats to Earth.

ESA NEO Space Mission Preparation site features background, Don Quijote mission description, and a NEOMAP.

UK NEO Information Centre goal is to increase public awareness and understanding through education of impact hazards so that everyone, whatever their background knowledge, can make informed decisions on NEO issues.

JPL Solar System Dynamics Group provides information and on-line tools to support NEO study and research.

Lincoln Near Earth Asteroid Research (LINEAR), by MIT Lincoln Lab, USAF, and NASA, is applying technology originally developed for the surveillance of earth orbiting satellites, to the problem of detecting and cataloging NEOs.

Space "tractor" proposal to prevent asteroids impact with Earth; asteroid 99942 Apophis may be the first.

NASA NEO Survey and Deflection Analysis of Alternatives Report to Congress. LASERs in space or on the Moon may be able to characterize asteroids or even alter their trajectories away from Earth.