South African scientists have found the first ever evidence of a comet entering Earth’s atmosphere and exploding. The evidence is a tiny pebble, found in the Saharan desert, which scientists say they believe is a remnant from the nucleus of a comet that entered Earth’s atmosphere 28 million years ago above Egypt and exploded, raining fire down upon the Earth killing everything it touched. The impact heated up the Saharan sand so much it formed yellow silica glass, which can be found in the yellow-brown scarab of Tutankhamen’s brooch. The shock of the comet explosion also produced diamonds, usually only seen deep in the Earth from pressure.
[ Read the Article: Just In Time For ISON: Scientists Discover Ancient Earth Comet Impact ]