Researchers have grown accustomed to collapsing polar ice shelves, which raise sea level bit by bit as they break free of the land that supports their weight as they float. The Antarctic Peninsula alone has seen seven ice shelves recede or crumble entirely in the past 20 years, including the massive Larsen B Ice Shelf in 2002, as summer temperatures have slowly ratcheted up. But the latest collapse has researchers' attention because it is the first ever documented to happen in the winter. A radar instrument aboard the European Space Agency's Envisat satellite captured this series of shots of the Wilkins Ice Shelf on the Antarctic Peninsula losing 62 square miles (160 square kilometers) of ice from May 30 to June 9. The loss follows an earlier breakdown in February that saw the sloughing off of 160 square miles (400 square kilometers). The broad Wilkins shelf connects the islands of Charcot and Latady below South America by an increasingly slender strip, now just 1.6 miles (2.7 kilometers) wide, down from four miles (six kilometers) after February's collapse. And researchers say the breakup is still in progress. They suspect the connecting bridge will fall completely in as little as days.