Operation IceBridge by NASA, which oversees the poles by plane 10 years ago, has allowed IceBridge mission scientist John Sonntag to discover something he had never seen before: strange circular features

Using a fleet of research aircraft, Operation#IceBridge looks at Earth's polar ice to better understand connections between polar regions and the global climate system. It also studies annual changes in

As of Nov. 10, when the IceBridge scientists observed this crack, it was 70 miles (112 km) long and more than 300 feet (91 meters) wide. The dark depths of the crack plunge down about a third of a mile