- 99942 Apophis (2004 MN4) Earth Impact Risk Summary
 - Features a NASA Near Earth Object Programme summary table that includes basic information about the hazard for the object, 99942 Apophis. - American Meteor Society: Frequently Asked Questions About Meteors and Meteor Showers
- Addresses what meteors are, how to observe meteor showers, when they occur, and other questions.
- Arcetri Near Earth Object Precovery Program (ANEOPP)
- Dedicated to the systematic search of NEO images on existing photographic plate archives.
- Asteroid Radar Research
- Provides an overview of the JPL and California Institute of Technology projects and facilities dedicated to tracking asteroids.
- Asteroids
- Includes basic information on asteroids, pictures, and links to astronomy sites.
- Bill Bottke's Asteroid Research
- Web page sharing facts about asteroids including how they are formed, how they evolve, and what they are made of. By Bill Bottke, a research scientist with the Department of Space Studies, Southwest Research Institute.
- Comet 1999 H1 (Lee)
- Steve Lee, an Australian amateur astronomer, recounts how he discovered the comet.
- Friday the 13th, 2029
- Read about how Asteroid 2004 MN4 will come scarily close to Earth on Friday, April 13, 2029, typically considered an unlucky day. Also listen to Dr. Tony Phillips of Science@NASA talk about the occurence.
- Gary W. Kronk's Comets & Meteor Showers
- Comet and meteor shower facts and viewing calendar, professional and amateur observations, and historical research compiled by Gary W. Kronk.
- International Comet Quarterly
- Information regarding news, observations, orbital data, designations and names, and more regarding comets and related topics.
- JPL Comet Observation Page
- Includes recent news, observations, and images of comets. Also provides some generally accepted definitions for terms related to cometary astronomy.
- July 3, 2006 Flyby of Apollo Asteroid 2004 XP14
- Observers guide to the near-Earth Apollo asteroid 2004 XP14 passing by the Earth on July 3, 2006. Report your sightings and success to the ALPO.
- Meteorite Central
- Collection of new articles, chat and bulletin board areas, postcards, book reviews, and more.
- Meteorite Stamps and Coins
- Features stamps from around the world commemorating meteorites or meteorite impacts. Also displays a collection of classical coins depicting meteorites
- Meteorites and Their Properties
- Information to help determine if suspected samples are really meteorites. Includes hunting for and reporting meteorites, and a glossary.
- Meteors and Meteorites
- Offers an introduction to meteoroids, small pieces of space debris (usually parts of comets or asteroids) that are on a collision course with the Earth.
- Meteors and the Native Americans
- A look at beliefs and stories of various tribes.
- Minor Planet Center (MPC)
- Operates at the Smithsonian Astrophysical Observatory and is responsible for the efficient collection, computation, checking, and dissemination of astrometric observations and orbits for minor planets and comets.
- NASA Near Earth Object Program
- Information about near-earth object studies including asteroid orbits, images, updates, potentially hazardous asteroids (PHA), and more.
- NEAR Challenge
- Test of the exploded planet hypothesis at asteroid Eros that confronts mainstream astronomy.
- Near Earth Objects - Dynamic Site (NEODyS)
- Database of Near Earth Asteroids and observatories.
- NEO Information Centre
- Provides services to the public, educators, media, and scientists to encourage understanding and advancement of Near Earth Objects science.
- Nine Planets: Asteroids
- Guide to how asteroids are classified according to their spectra and position in the solar system.
- Nine Planets: Small Bodies
- Information hub on asteroids, comets, meteors, interplanetary medium, and the Kuiper Belt.
- Notebook of a Comet Hunter
- Logs and notes of an amateur astronomer's search for undiscovered comets.
- NOVA: Doomsday Asteroid
- Introduction to the brilliant Hale-Bopp and Hyakutake comets.
- NSSDC: Asteroids and Comets
- Collection of asteroid and comet fact sheets, images, and mission information from NASA.
- Photo Gallery of Meteorwrongs, A
- Archive of rocks mistaken for meteors. From the Department of Earth and Planetary Sciences at Washington University in St. Louis.
- Radio Meteor Data
- Displays the results of radio meteor observations in Japan, using the various radio sources such as HRO, MURO, and FRO.
- Rock & Roll Minor Planets
- Actual minor planets names after actual classic rock stars.
- SkyTonight.com: Asteroids
- Articles and observing guides for asteroids, the rocky little worlds that can be fascinating to track down.
- SkyTonight.com: Comets
- Collection of articles addressing how to estimate a comet's brightness, how to photograph one, and how to report a comet discovery.
- SkyTonight.com: Meteors
- Series of articles addressing shooting stars, meteors, fireballs, bolides, meteor showers, and meteor storms. Includes information on upcoming storms and tips for observing them.
- University of Arizona Lunar and Planetary Laboratory Spacewatch Project
- Studies statistics of comets and asteroids in order to investigate the collisional evolution of the solar system.
- Views of the Solar System: Comet Introduction
- Learn about the small, fragile, irregularly shaped celestial bodies composed of a mixture of non-volatile grains and frozen gases.
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