More detail available at: http://news.nationalgeographic.com/news/2013/10/131011-first-comet-impact-egypt-fragment-science-space/ http://news.nationalgeographi

More detail available at: http://news.nationalgeographic.com/news/2013/10/131011-first-comet-impact-egypt-fragment-science-space/ http://news.nationalgeographic.com/news/2013/10/131011-first... http://www.newscientist.com/article/dn24381-black-glass-could-be-first-comet-chunk-found-on-earth.html http://www.newscientist.com/article/dn24381-black-glass-coul...