Evidence of a comet that rained ‘a shockwave of fire’ detected on Earth

9 Oct , 2013  

“A comet that struck Earth around 28 million years ago annihilated part of modern-day Egypt — but managed to leave behind a few relics for modern scientists to marvel over. According to a team of South African researchers, a small pebble discovered by an Egyptian geologist in 1996 has been identified as having come from […]