Science & Tech
Researchers discover evidence of comet hitting Earth

Credits: REUTERS/University of Hawaii/Terry Lovejoy/Australia


Researchers have discovered evidence that 28 million years ago a comet entered Earth's atmosphere over Egypt and exploded, killing all life forms in its path.

The explosion sent a shock wave of fire down over the Sahara desert, the South African researchers say. This heated the sand to 2,000 C and resulted in the formation of yellow silica glass, which was used by ancient jewellers, and microscopic diamonds.

The key to the research was a black pebble found by an Egyptian geologist. After thorough analysis, the researchers determined it was the first known specimen of a comet nucleus.

"Comets always visit our skies - they're these dirty snowballs of ice mixed with dust - but never before in history has material from a comet ever been found on Earth," David Block of Wits University in Johannesburg said in a release.

The research will be published in Earth and Planetary Science Letters.

Sun News Videos

Mink farming

Nova Scotia produces half of Canada's mink fur.

Feminist 'consent underwear' spark debate

Do consent underwear just change the conversation from 'rape culture' to 'slut culture'?

Afghanistan's upcoming election

With an election rapidly approaching, change is on its way to Afghanistan. Good or bad, the world is watching.

Ezra Levant’s The Source is the most provocative and thought-changing multimedia show in Canada.

This show is 100% focused on the political battles taking place across Canada, in the United States...even around the world.

Michael Coren brings you strong, balanced opinions to challenge conventional thinking.

Byline brings you the stories you won’t hear anywhere else while exploring points of view that are all too often ignored.