A massive iceberg has broken off of Antarctica's Brunt Ice Shelf, British researchers announced. –
At 490 square miles, the berg is bigger than the size of New York City, which is 302 square miles.
A crack in the ice shelf widened several hundred meters on Friday just before the iceberg sheared off. The last major chunk to have come off in this area was in the early 1970s, the BBC said.
However, the event wasn't a surprise: “Our teams at the British Antarctic Survey (BAS) have been prepared for the calving of an iceberg from Brunt Ice Shelf for years," said BAS director Jane Francis in a statement.
The Brunt Ice Shelf is where the British Antarctic Survey’s Halley Research Station is located. Glaciologists said the research station is unlikely to be affected by the current calving event, which is what the breaking process is called.