Chromium, by contrast, is very common on Earth so it could not be correlated to a meteorite impact. Later, scientists found more evidence in the form of sulfur in the K-Pg layer but not in the ...

Using isotopic dating, a team at Purdue University has determined that the “Lafayette Meteorite” likely interacted with liquid water approximately 742 million years ago. It was a long journey ...

Around 3.26 billion years ago, long before complex life forms roamed the Earth, a meteorite of staggering proportions slammed into the planet, dramatically altering its environment. This cosmic ...