Kurt Kjær collecting sand samples at the front of Hiawatha Glacier. This sand was transported by the glacier from the bottom of the impact crater to the ice margin, and it has yielded a wealth of ...

Researchers Baffled To Find World's Oldest Impact Crater, Redefines How Our Planet Was Shaped Land features reflect the ...

Map of the bedrock topography beneath the ice sheet and the ice-free land surrounding the Hiawatha impact crater. The structure is 31 km wide, with a prominent rim surrounding the structure.

Researchers have discovered the world's oldest known meteorite impact crater, which could significantly redefine our understanding of the origins of life and how our planet was shaped. The team ...

The discovery of a massive crater formed by the impact of a meteorite more than three billion years ago is changing the way scientists view the history of Earth and the planet's stages of evolution.

Scientists have long sought to determine the age of the moon's South Pole–Aitken (SPA) basin, the largest and oldest known ...