| Earth Impact Database: Crater names, location, size, and age. Background information, images, FAQ. |
| A 'Smoking Gun' for Dinosaur Extinction: NASA JPL article on the Chicxulub crater. An image from the Shuttle Radar Topography Mission shows an elevation feature of the crater. The article gives background information and interpretation of the image. |
| Astronomy Picture of the Day - Barringer Crater on Earth: Aerial photograph. |
| Astronomy Picture of the Day - Impact: 65 Million Years Ago: Computer rendering of Chicxulub crater, from gravity and magnetic field data. |
| Astronomy Picture of the Day - Manicouagan Impact Crater on Earth: Image taken from space shuttle Columbia in 1983. |
| Chicxulub Scientific Drilling Program: Multinational program to obtain and study core samples. |
| Crater: A program that relates crater size to projectile size. |
| Geology 376 - 2001 Field Trip: Travelogue of a geology class field trip to the Barringer meteor crater. Images, crater description, topographic map. |
| Impact Craters on Earth: Map of crater locations in Canada, crater images, explanation and images of rock altered by impact. |
| Impact Parameters: Online calculator for cratering effects of hypothetical asteroid impacts. |
| Impact Structures: Geology, geophysics, and petrology of impact structures (meteorite impact craters) with special focus on the Azuara and Rubielos de la Cérida impact structures (Spain) |
| Meteor Crater: Official site for the visitors center at the Barringer meteor crater. Short history, animations, visitor information. |
| Meteor Crater: Images and short explanations of geologic features near the rim of the Barringer meteor crater. |
| 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. |
| Solar System Collisions: Online calculator for effects of asteroid impact. |
| Terrestrial Impact Cratering and Its Environmental Effects: World map of impact sites, details on the Chicxulub site, and details on environmental effects of impacts. |
| Terrestrial Impact Craters: Text describing formation of impact craters. Images, glossary. |
| Terrestrial Impact Craters: Background information, images, list of craters, references. |
| Three Craters in Israel: Investigates the possibility they have been caused by comet fragments. |
| Traces of Catastrophe: Online book. Detailed introduction and overview of impact processes, crater formation, and shock metamorphism. |
| Why are impact craters always round?: The answer given in an article from Scientific American. |
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