|
Lecture 23 - The Impact Theory of Mass Extinction ... II. THE ASTEROID IMPACT THEORY BECOMES TESTABLE ... At the present diverse lines of evidence have largely confirmed the asteroid impact theory of mass extinctions and identified Chicxulub as the "smoking gun". Debate still rages by paleontologists about whether the impact...
|
rainbow.ldeo.columbia.edu/courses/v1001/23.html
|
|
|
|
Some work was done by Thompson and Stevenson in 1983 about the formation of moonlets in the disk of debris that formed around Earth after the impact. However, in general the theory languished until 1984 when an international meeting was organized in Kona, Hawaii, about the origin of the moon.
|
www.psi.edu/projects/moon/moon.html
|
|
|
Impact crater - Wikipedia, the free encyclopedia
|
|
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body. In most common usage, ...
en.wikipedia.org/wiki/Impact_crater
|
|
In certain circles, much has been made of the theory that such large and widespread fires couldn't have happened without assistance from an external astronomical force -- namely, a comet or meteor impact with the earth in the Great Lakes area.
|
www.peshtigofire.info/impact.htm
www.peshtigofire.info/impact.htm
|
|
Boulder - August 15, 2001 - The ... The "giant impact" theory, first proposed in the mid-1970s to explain how the Moon formed, has received a major boost as new results demonstrate for the first time that a single impact could yield the current Earth-Moon system.
|
www.spacedaily.com/news/lunar-01d.html
|
|
Eugene, OR (SPX) May 23, 2007 - Two University of Oregon researchers are on a multi-institutional 26-member team proposing a startling new theory: that an extraterrestrial impact, possibly a comet, set off a 1,000-year-long cold spell and wiped out or fragmented the prehistoric Clovis culture and a variety of animal ...
|
www.spacedaily.com/reports/New_Clovis_Age_Comet_Impact_...
www.spacedaily.com/reports/New_Clovis_Age_Comet_Impact_Theory_999.html
|
|
The giant impact theory emerged as the "fashionable" theory, but everyone agreed that it was relatively untested and that it would be appropriate to reserve judgement on it until a lot of testing has been conducted.
|
www.windows.ucar.edu/tour/link=/teacher_resources/impac...
www.windows.ucar.edu/tour/link=/teacher_resources/impact_theory.html
|
|
Giant impact hypothesis - Wikipedia, the free encyclopedia
|
|
The giant impact hypothesis (sometimes referred to as the big whack , or, less frequently, the big splash ) is the currently favored scientific hypothesis for the formation of the Moon, which is...
en.wikipedia.org/wiki/Giant_impact_hypothesis
|
|
In 1980, Luiz Alvarez, a Nobel prize winning physicists, teamed up with his son Walter, a geologist, and presented the meteorite impact theory.
|
www.carleton.ca/Museum/saleem/meteor.htm
|
|
