The first evidence of a comet strike on earth has been found. On Oct. 9, NBC News reported that a group of scientists have found the first-ever concrete evidence that a comet struck the earth -- many, many years ago. After much analyses and several series of tests, scientists believe they have solved a mystery. A black pebble that was found years ago in Egypt is now believed to be a piece of a comet nucleus.
"It's a typical scientific euphoria when you eliminate all other options and come to the realization of what it must be," study lead author Jan Kramers of the University of Johannesburg in South Africa said in a statement (via NBC News).
The evidence of a comet strike is quite an amazing find. The "mysterious black pebble" that has really been at the center of this case is so fascinating in and of itself. According to the report, the black pebble is "studded with diamonds" -- which is amazing but also further proves that the pebble is outer-worldly.
"Diamonds are produced from carbon-bearing material. Normally they form deep in the Earth, where the pressure is high, but you can also generate very high pressure with shock. Part of the comet impacted, and the shock of the impact produced the diamonds," Kramers continued.
The evidence of this comet strike dates back about 28 millions years. It is believed that the comet exploded in the atmosphere and left its mark all over the Sahara Desert.
© Effie Orfanides 2013