• The Minor Planet Center - MPC.
• Asteroid and Comet Impact Hazards by Dr David Morrison.
• Asteroid and Comet Info (Asteroid and Comet database for perilous times).
• Asteroid & Comet Threat and News Victor Noto's "BIGROCK" Web site (an excellent amateur site!).
• Asteroid news page
• Deep Space 1 Mission - JPL.
• Mathilde Flyby Mission
• Bill Bottke's Asteroid Research Page.
• Bad Astronomy - Astronomer Phil Plait's Web Site.
• Bill Arnett's Asteroid Page.
• Comet Observations (Comet News, Ephemerides, and Information).
• Comet Information.
• Comets, Culture, & Currency - direct social and physical impact of comet debris during the holocene.
• CTH 3D Comet Impact Simulations.
• Center of Advanced Space Studies
• Comet Hale-Bopp Home Page.
• Lowell Observatory - Asteroid Observing Services
• European Asteroid Research Node A group of independant European organizations involved in Asteroid Research.
• PDSSBN: Small Solar System Bodies.
• Asteroid Page by SEDS

Near Earth Asteroids

• Near-Earth Asteroid Tracking Home Page (NEAT).
• Spaceguard Foundation
• Rosetta Mission
• Asteroid and Comet Defence (U.S. Navy).
• Near-Earth Asteroid Information from the MPECs.
• Near Earth Asteroid Rendezvous Mission
• Stardust Mission
• JPL's Near Earth Asteroid Rendezvous Page (NEAR).
• The NEAR Spacecraft (SEDS).
• Earth-Crossing Asteroids - Images and animations of Earth-crossing asteroids.
• Spacewatch Dr Tom Gehrels.
• Ondrejov NEO Photometric Program - (Peter Pravec).
• Clark Chapman's Papers on the Impact Hazard from Near-Earth Asteroids.
• JPL SSV: Earth-Approaching Asteroids Overview on - Castalia, Toutatis, and Geographos.
• Near-Earth Asteroid Prospector Mission (NEAP): SpaceDev Corporation

• Barringer Meteor Crater - meteors and impacts.
• Comets and Meteor Showers (Gary W. Kronk).
• 1908 Siberia Explosion - reconstructing the 1908 Tunguska explosion from eyewitness accounts.
• Antarctic Search for Meteorites (ANSMET) - program which recovers meteorite specimens from the Antarctic icesheet.
• Atmospheric Entry of Meteors - main physical processes in the atmospheric entry of large meteors. Some complete research papers on the topic are included and related links.
• Cosmic Collisions - what would happen to us if a large asteroid smashed into the Earth? From the Astronomical Society of the Pacific.
• Doomsday, asteroids & comets - the doomsday scenario.
• Impact Site - meteorite photographs.
• Meteorite Central
• International Meteor Organization (IMO).
• Meteors - Norwegian Astronomical Society
• Real Threat of Asteroids, The - sometime with in the next century there is a chance of getting hit by an asteroid.
• Scientific American: Bang and Splat - a supercomputer anticipates the catastrophic impact of a giant comet.
• Scientific American: Double Whammy - an asteroid striking land would be catastrophic, but the damage might be a lot worse if it plunged into the sea.
• Small Comets - A series of spectacular images produced by cameras on NASA's Polar spacecraft suggest that Earth is being pelted by thousands of small comets each day.

Home Pages / Bios of Asteroid / Comet Hunters & other Scientists

• Irving K. Robbins Asteroid Hunter and Astronomer at the CSI Astrophysical Observatory, City University of New York.
• Eleanor Helin Astronomer and NEA Hunter!
• Steve Pravdo - NASA.
• Bill Bottke - Cornell University.