Asteroid and Comet Impact Hazards
(Complete Item Description)
- Abstract:
At the end of 2003, there were 2600 known Near Earth Asteroids (NEAs), and of these 691 are brighter than absolute magnitude, which is taken to correspond to a diameter of 1 kilometer or more. Of these, 131 are classed as PHAs (potentially hazardous asteroids) larger than 1 km. This site describes the potentially devastating effects of a collision between Earth and a large meteor or asteroid. It also describes the Spaceguard Survey, which is an initiative to locate and catalog as many potentially hazardous NEAs as possible. Other parts of the site include: a news archive, bibliography, catalog of near earth objects, image gallery, and links to related sites.
- Subject:
- Science and Technology
- Grade Level:
- Secondary
- SubTopics:
- Climate Change
- Collection:
- NASA
