Around 12,000 years ago, something scorched a vast swath of the Atacama Desert in Chile with heat so intense that it turned the sandy soil into widespread slabs of silicate glass. Now, a research team studying the distribution and composition of those glasses has come to a conclusion about what caused the inferno.
Click here for original story, Vast patches of glassy rock in Chilean desert likely created by ancient exploding comet
Source: Phys.org