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Heat from a comet explosion likely melted and fused soil in the Chilean desert, transforming it into massive patches of glass.
Scientists have found strange patches in the Atacama Desert in northern Chile, which is one of the driest places on Earth, with a high atmospheric temperature.
12,000 years ago, a comet likely exploded over Chile, a new study says.
Heat from a comet explosion likely melted and fused soil in the Chilean desert, transforming it into massive patches of glass.
They first came to scientists' attention about a decade ago: A mysterious field of glass fragments, scattered across Chile's Atacama Desert, and aligned in a vast corridor stretching 75 kilometers long (almost 50 miles).