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Asteroid - One of many small rocky bodies orbiting the Sun; a concentration of these bodies makes up the Asteroid Belt between Mars and Jupiter.


  • Near Earth Asteroid Tracking Info-Press, releases, Links, Interesting Objects by Month, Movie, Previous Images, Discoveries/Glossary, Neat Numbers Game, Near Earth Object Faqs, SkyMorph Images and Objects, Archive, Asteroids Population, NEAT/MSSS 1.2-m NEAT/Palomar 48" Oschin Telescope
  • Near Earth Asteroid Program the web page of NASA's Near-Earth Object Program Office at the Jet Propulsion Laboratory. This Program Office was established in mid-1998 to help coordinate, and provide a focal point for, the study of those comets and asteroids that can approach the Earth's orbit. The Earth's mean orbital distance from the sun is defined as an astronomical unit (1 AU) or approximately 93 million miles. Near-Earth Objects (NEOs) are generally defined as those objects whose close approaches to the sun are 1.3 AU or less. As a result, Near-Earth Objects are those comets and asteroids that can come within about 28 million miles of the Earth's orbit.
  • NEAR Earth Asteroid Rendezvous NEAR is conducting the first long-term, close-up study of an asteroid. Using innovative sensors and detection equipment, NEAR is collecting information on Eros' mass, structure, geology, composition, gravity and magnetic field. The NEAR mission aims to answer fundamental questions about the nature and origin of the many asteroids and comets close to Earth's orbit. These "near Earth" objects may contain clues about the formation of Earth, other planets, even the whole universe. Eros' pristine surface offers a look at conditions in space when Earth was formed more than 4.5 billion years ago.
  • Meteorite Central The latest information on Meteorites and the impact that they have on our planet. If you want to find a Meteorite this is the place to go. If you think you have found a Meteorite this is the place to find the facts.
  • International Meteor Organization The International Meteor Organization (IMO) was founded in 1988 and has more than 250 members now. IMO was created in response to an ever growing need for international cooperation of meteor amateur work
  • The Torino Scale The Torino Scale is a "Richter Scale" for categorizing the Earth impact hazard associated with newly discovered asteroids and comets. It is intended to serve as a communication tool for astronomers and the public to assess the seriousness of predictions of close encounters by asteroids and comets during the 21st century.
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