Egyptian pebble filled with diamonds reveals comet that turned Sahara into glass 28 million years ago (More)

The first evidence of a comet impact on Earth has been found in a mysterious black Egyptian pebble filled with diamonds.

The comet is thought to have struck Earth 28 million years heating the sands of the Sahara desert to 2,000°C.

It created huge amounts of yellow silica glass- also known as Libyan desert glass- which today lie scattered over a 6 000 square kilometre area in the Sahara.

A magnificent specimen of the glass, polished by ancient jewellers, is found in Tutankhamun’s brooch with its striking yellow-brown scarab.

The discovery reported in Earth and Planetary Science Letters could even help researchers unlock the secrets of the formation of our solar system.


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