Asteroid and Comet Impact Hazards - This is a NASA site reviewing the possible hazards of Near Earth Objects.IAU Astronomical Headlines - Reports of recent astronomical discoveries from International Astronomical Union Circulars. Lists new comets, minor planets, natural satellites, novae, and supernovae, with ephemerides.
Leonid Meteor Storm - Information on the Leonid meteor storms which are associated with the appearance of the comet Tempel-Tuttle.
Comets and Meteor Showers - News & information, professional & amateur observations, historical research. Compiled by Gary W. Kronk.
The Spacewatch Project - The primary goal of Spacewatch is the study of statistics of comets and asteroids in order to investigate the collisional evolution of the solar system.
NearEarth.net - Information on meteor showers, comets, specialized optics, and asteroids.
Chronicle of fireballs in earth's atmosphere - Archive of the Air Force news release and pictures of meteors, 1994 to present
The Spacewatch Project - Group at the University of Arizona's Lunar and Planetary Laboratory whose goals are the study of statistics of comets and asteroids in order to investigate the collisional evolution of the solar system, the discovery of target asteroids for Clementine and other space missions aimed at exploration, and the protection of the Earth from asteroid impact.
Reuben Johnson's K/T Expedition -- 2001 - Background info on the Chicxulub impact crater at the K/T (Cretaceous/Tertiary) boundary with photos of the 2001 NASA/Planetary Society expedition to Belize and Mexico to study and gather ejecta samples.
The Leonid Meteor Storm - An overview of the Leonid Meteor Storm providing information on past and future storms. This site will be updated in real time for the 1999 and 2000 Leonid events.
Christophe Dumas, Planetary Astronomy - Near-infrared spectroscopy, and high-angular resolution imaging of small planetary bodies and asteroidal satellites.
Asteroids and Comets - About the possible danger of undetected asteroids and comets on collision course with earth.