Tutankhamun's brooch, which celebrates the ancient Egyptian pharaoh with a dazzling scarab made of yellow silica glass, which scientists say was likely formed from a comet impact millions of years ago.
This impact occurred about 28 million years ago over Egypt, study team members say. The comet exploded in the atmosphere, heating the sand below to a temperature of 3,630 degrees Fahrenheit (2,000 degrees Celsius) and generating huge amounts of yellow silica glass across 2,317 square miles (6,000 square kilometers) of the Sahara Desert.
Comets are leftover pieces from the formation of the solar system 4.5 billion years ago, so the new discovery could have valuable scientific applications as well as gee-whiz appeal.
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