Scientists Spot What May Be a Giant Impact Crater Hidden Under Greenland Ice

  1. Scientists Spot What May Be a Giant Impact Crater Hidden Under Greenland Ice  Space.com
  2. Ice Age Asteroid Crater Discovered Beneath Greenland Glacier  New York Times
  3. Greenland ice sheet hides huge ‘impact crater’  BBC News
  4. A Massive Impact Crater Has Been Detected Beneath Greenland’s Ice Sheet  Gizmodo
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