A 3,300-foot- (1 km) wide asteroid struck our planet 1.2 billion years ago, according to new research published in the Journal of the Geological Society. An artist’s depiction of an asteroid impact. Image credit: Don Davis / NASA. In 2008, a team of researchers from the Universities of Oxford and Aberdeen found evidence for the ancient meteorite strike near Ullapool, Scotland. The thickness and extent of the debris deposit the scientists found suggested...
