A controversial theory that suggests an extraterrestrial body crashing to Earth almost 13,000 years ago caused the extinction of many large animals and a probable population decline in early humans is gaining traction from ...
Earth Sciences
Oct 25, 2019
22
733
What kicked off the Earth's rapid cooling 12,800 years ago?
Earth Sciences
Oct 22, 2019
4
174
When UC Santa Barbara geology professor emeritus James Kennett and colleagues set out years ago to examine signs of a major cosmic impact that occurred toward the end of the Pleistocene epoch, little did they know just how ...
Earth Sciences
Mar 13, 2019
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1479
Most scientists agree that the Earth has pretty much always had its moon. Details of the moon's composition (in particular the "isotopic mixture" of heavier and lighter versions of various elements) are too similar to the ...
Space Exploration
Jan 13, 2017
0
14
The extensive valley networks on the surface of Mars were probably created by running water billions of years ago, but the source of that water is unknown. Now, a team of Penn State and NASA researchers is using climate models ...
Space Exploration
Oct 12, 2015
12
636
(Phys.org) —A team of researchers with members from several universities in the U.S. has published a paper in the journal Proceedings of the National Academy of Sciences, claiming that evidence supporting the notion that ...
(Phys.org)—Comet explosions did not end the prehistoric human culture, known as Clovis, in North America 13,000 years ago, according to research published in the journal Geophysical Monograph Series.
Earth Sciences
Jan 30, 2013
47
0
(Phys.org)—Rebutting a speculative hypothesis that comet explosions changed Earth's climate sufficiently to end the Clovis culture in North America about 13,000 years ago, Sandia lead author Mark Boslough and researchers ...
Space Exploration
Jan 30, 2013
14
0
(Phys.org)—There are still unanswered questions regarding how the Moon was formed. Improved simulation methods and higher-performance supercomputers have now paved the way for an alternative development model that could ...
Space Exploration
Sep 17, 2012
4
0
(Phys.org) -- Evidence used to support a possible extraterrestrial impact event is likely the result of natural processes, according to a new collaborative study led by U.S. Geological Survey scientists.
Earth Sciences
Apr 23, 2012
3
0
