Rock soil droplets formed by heating most likely came from Stone Age house fires and not from a disastrous cosmic impact 12,900 years ago, according to new research from the […]
impact
Posted inImpact events
Asteroid that wiped out dinosaurs may have nearly knocked off mammals, too
The extinction of the dinosaurs 66 million years ago is thought to have paved the way for mammals to dominate, but a new study shows that many mammals died off […]
Posted inImpact events
Exploring the Role of the Sun's Motion in Terrestrial Comet Impacts
The cratering record on the Earth and Moon shows that our planet has been exposed to high velocity impacts for much or all of its existence. Some of these craters […]
Posted inImpact events, Missions & Hardware, Origin & Evolution of Life
Meteorite Impact Craters May Have Hosted Early Life on Earth
A new study from Western University explores the possibility that Earth’s earliest life forms may have been cultivated by a meteorite impact event. The research team from Western’s Faculty of […]
Posted inImpact events
Assessments of the Energy, Mass and Size of the Chicxulub Impactor
In 1980, Alvarez and colleagues proposed that, in the transition from the Cretaceous to Paleogene, a large impactor collided with Earth being the cause of the mass extinction occurred at […]
Posted inExoplanets, -moons, -comets, Impact events
The Atmospheres of Earth-like Planets after Giant Impact Events
It is now understood that the accretion of terrestrial planets naturally involves giant collisions, the moon-forming impact being a well known example. In the aftermath of such collisions the surface […]
Posted inAstrochemistry, Astrogeology, Impact events, Moon, Panspermia, Press Release
Building Blocks of Early Earth Survived Collision That Created Our Moon
Unexpected new findings by a University of Maryland team of geochemists show that some portions of the Earth’s mantle (the rocky layer between Earth’s metallic core and crust) formed when […]