Iceberg nearly twice Atlanta’s size breaks away

ANTARCTICA (CNN/NASA) — Scientists say a massive iceberg with an area almost twice the size of Atlanta is moving into the ocean off Antarctica.

It could threaten shipping during the Antarctic winter.

In a report from NASA’s Earth Observatory, scientists say the ice island covers 255 square miles and could be almost one-third of a mile thick.

NASA says the iceberg broke away from Antarctica’s Pine Island Glacier last November.

The crack that produced it was first spotted in 2011.

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