There’s something big lurking beneath Greenland’s ice. Using airborne ice-penetrating radar, scientists have discovered a 31-kilometer-wide crater — larger than the city of Paris — buried ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The age of a 31 ...

Here’s how it works. Scientists now know the age of an enormous impact crater hidden under Greenland's ice. The Hiawatha crater, which sits under 0.6 mile (1 kilometer) of ice in northwest ...

Today, the crater lies beneath the Hiawatha Glacier in Northwest Greenland. Rivers flowing from the glacier supplied the researchers with sand and rocks that were superheated by the impact 58 ...

Nearly a kilometre beneath Greenland’s ice sheet lies a buried impact crater, left by the crash of an enormous meteorite. The crater is probably among the 25 biggest known on Earth, and is the ...

Today, an international team of scientists describes what they say is a huge new impact crater that lies under northwestern Greenland’s Hiawatha Glacier. If confirmed, it would be the first ...

Scientists have discovered a possible second impact crater buried under more than a mile of ice in northwest Greenland. This follows the finding, announced in November 2018, of a 19-mile-wide ...

The Hiawatha impact crater is covered by the Greenland Ice Sheet, which flows just beyond the crater rim, forming a semi-circular edge NASA/John Sonntag View gallery - 4 images ...

The powerful impact that created a mysterious crater at the northwestern edge of Greenland’s ice sheet happened about 58 million years ago, researchers report March 9 in Science Advances.

there’s a crater there, and it’s quite large. “Previous radar measurements of Hiawatha Glacier were part of a long-term NASA effort to map Greenland’s changing ice cover,” Joe MacGregor ...