Impacts, craters, and the geology that accompanies them.
Research on cosmic impacts has made us take a big gulp and thank our lucky stars.
The Tunguska cosmic impact of 1908 was a lucky strike for Earth.
This new "Richter scale" of cosmic impact situations helps us measure the unimaginable.
Impact-related faulting creates peculiar friction-powered melts called pseudotachylites.
Presentations and the resulting white paper from this authoritative impact conference in Washington are presented by the Aerospace Corporation.
This space-oriented site from NASA consolidates data and background reports from many NASA sites.
A well-done amateur site presents fascinating detail pointing to many cometary impacts in ancient times.
The University of New Brunswick has them all in this database spun off from the Geological Survey Canada.
Interact with this page from the Lunar and Planetary Lab at the University of Arizona--enter an impactor and your distance from it, then see what the experience would be like.
The Planetary Science Institute has a colorful educational site covering crater geology in some detail.
"When the Sky Fell on Our Heads: Identification and Interpretation of Impact Products in the Sediment" is a 1995 review article by Philippe Claeys.
The Jet Propulsion Lab is the world hub for impact-related space research.
The University of Arizona's Lunar and Planetary Lab presents several pages on meteorites, impacts and their role in Earth history.
Charles O'Dale has devoted his retirement to exploring impact craters in his light plane, and sometimes a canoe. The craters are mostly Canadian.
Pictures and an exhibition by experts Christian Koeberle and Virgil Sharpton. Second edition, 2000.
The USA's biggest impact crater formed in the earliest Oligocene. The U.S. Geological Survey has gathered some good resources here, including two Professional Papers.
Iowa's buried crater is introduced on this page from the Iowa Geological Survey Bureau.
Meteor Crater Enterprises says, "Come on by!"
All about the research behind Meteor Crater from the Barringer Meteor Center.
Bill Bentley of caver.net put together this enthusiast's page on the USA's second-largest crater.
The University of Bologna has scientific papers as well as links and photos.
Russian author Andrei Zlobin has strong and informed opinions on this modern impact event, in English and Russian.
